{"id":119897,"date":"2023-02-20T09:38:24","date_gmt":"2023-02-20T08:38:24","guid":{"rendered":"https:\/\/material-properties.org\/o-que-e-bronze-berilio-definicao\/"},"modified":"2023-02-20T09:47:29","modified_gmt":"2023-02-20T08:47:29","slug":"o-que-e-bronze-berilio-definicao","status":"publish","type":"post","link":"https:\/\/material-properties.org\/pt-br\/o-que-e-bronze-berilio-definicao\/","title":{"rendered":"O que \u00e9 Bronze Ber\u00edlio &#8211; Defini\u00e7\u00e3o"},"content":{"rendered":"<p><span><div class=\"su-quote su-quote-style-default\"><div class=\"su-quote-inner su-u-clearfix su-u-trim\">O cobre ber\u00edlio, tamb\u00e9m conhecido como bronze ber\u00edlio, \u00e9 uma liga de cobre com 0,5 a 3% de ber\u00edlio. O cobre ber\u00edlio \u00e9 o mais duro e forte de qualquer liga de cobre (UTS at\u00e9 1400 MPa).<\/div><\/div><\/span><\/p>\n<p><span><div class=\"su-divider su-divider-style-dotted\" style=\"margin:15px 0;border-width:2px;border-color:#999999\"><\/div><\/span><\/p>\n<p><span><div  class=\"lgc-column lgc-grid-parent lgc-grid-100 lgc-tablet-grid-100 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<figure id=\"attachment_29433\" aria-describedby=\"caption-attachment-29433\" style=\"width: 401px\" class=\"wp-caption alignright\"><a href=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/07\/berylium-bronze-tool-min.png\"><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-29433\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/07\/berylium-bronze-tool-min.png\" alt=\"bronze de ber\u00edlio\" width=\"411\" height=\"213\" \/><\/a><figcaption id=\"caption-attachment-29433\" class=\"wp-caption-text\"><span>ferramenta de cobre ber\u00edlio<\/span><\/figcaption><\/figure>\n<p><span>Os\u00a0<\/span><strong><span>bronzes<\/span><\/strong><span>\u00a0s\u00e3o uma fam\u00edlia de ligas \u00e0 base de cobre tradicionalmente ligadas ao estanho, mas podem referir-se a ligas de cobre e outros elementos (por exemplo, alum\u00ednio, sil\u00edcio e n\u00edquel).\u00a0<\/span><strong><span>Os bronzes<\/span><\/strong><span> s\u00e3o um pouco mais fortes do que os lat\u00f5es, mas ainda apresentam um alto grau de resist\u00eancia \u00e0 corros\u00e3o.\u00a0Geralmente s\u00e3o usados \u200b\u200bquando, al\u00e9m da resist\u00eancia \u00e0 corros\u00e3o, s\u00e3o exigidas boas propriedades de tra\u00e7\u00e3o.\u00a0Por exemplo, o cobre ber\u00edlio atinge a maior resist\u00eancia (at\u00e9 1400 MPa) de qualquer liga \u00e0 base de cobre.<\/span><\/p>\n<p><span>Historicamente, a liga de cobre com outro metal, por exemplo estanho para fazer bronze, foi praticada pela primeira vez cerca de 4000 anos ap\u00f3s a descoberta da fundi\u00e7\u00e3o de cobre e cerca de 2000 anos depois que o &#8220;bronze natural&#8221; entrou em uso geral. Uma civiliza\u00e7\u00e3o antiga \u00e9 definida como estando na Idade do Bronze, seja produzindo bronze por fundi\u00e7\u00e3o de seu pr\u00f3prio cobre e liga com estanho, ars\u00eanico ou outros metais.\u00a0Bronze, ou ligas e misturas semelhantes ao bronze, foram usadas para moedas por um per\u00edodo mais longo.\u00a0Os bronzes ainda s\u00e3o amplamente usados \u200b\u200bhoje em dia para molas, rolamentos, buchas, rolamentos piloto de transmiss\u00e3o de autom\u00f3veis e acess\u00f3rios semelhantes, e s\u00e3o particularmente comuns nos rolamentos de pequenos motores el\u00e9tricos.\u00a0Lat\u00e3o e bronze s\u00e3o materiais de engenharia comuns na arquitetura moderna e usados \u200b\u200bprincipalmente para coberturas e revestimento de fachadas devido \u00e0 sua apar\u00eancia visual.<\/span><\/p>\n<h2><span>Bronze de Ber\u00edlio<\/span><\/h2>\n<p><strong><span>O cobre-ber\u00edlio<\/span><\/strong><span>, tamb\u00e9m conhecido como\u00a0<\/span><strong><span>bronze-ber\u00edlio<\/span><\/strong><span>, \u00e9 uma liga de cobre com 0,5 a 3% de ber\u00edlio.\u00a0O cobre ber\u00edlio \u00e9 o\u00a0<\/span><strong><span>mais duro e forte<\/span><\/strong><span>\u00a0de qualquer liga de cobre (UTS at\u00e9 1.400 MPa), na condi\u00e7\u00e3o totalmente tratada termicamente e trabalhada a frio.\u00a0Combina\u00a0<\/span><strong><span>alta resist\u00eancia<\/span><\/strong><span>\u00a0com\u00a0<\/span><strong><span>propriedades n\u00e3o magn\u00e9ticas<\/span><\/strong><span>\u00a0e\u00a0<\/span><strong><span>n\u00e3o faiscantes <\/span><\/strong><span>qualidades e \u00e9 semelhante em propriedades mec\u00e2nicas a muitos a\u00e7os de liga de alta resist\u00eancia, mas, em compara\u00e7\u00e3o com os a\u00e7os, tem melhor resist\u00eancia \u00e0 corros\u00e3o (semelhante ao cobre puro).\u00a0Tem boa condutividade t\u00e9rmica (210 W\/m\u00b0C) 3-5 vezes mais que o a\u00e7o ferramenta.\u00a0Essas ligas de alto desempenho s\u00e3o usadas h\u00e1 muito tempo em ferramentas anti-fa\u00edscas nas ind\u00fastrias de minera\u00e7\u00e3o (minas de carv\u00e3o), g\u00e1s e petroqu\u00edmica (plataformas de petr\u00f3leo).\u00a0Chaves de fenda, alicates, chaves inglesas, cinz\u00e9is frios, facas e martelos de cobre ber\u00edlio est\u00e3o dispon\u00edveis para esses ambientes.\u00a0Devido \u00e0 excelente resist\u00eancia \u00e0 fadiga, o cobre ber\u00edlio \u00e9 amplamente utilizado para molas, fios de mola, c\u00e9lulas de carga e outras pe\u00e7as que devem manter sua forma sob cargas c\u00edclicas.<\/span><\/p>\n<p><span><div class=\"su-divider su-divider-style-dotted\" style=\"margin:25px 0;border-width:3px;border-color:#999999\"><\/div><\/span><\/p>\n<p><a href=\"https:\/\/material-properties.org\/wp-content\/uploads\/2021\/03\/beryllium-copper-properties-density-strength-price.png\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-108256\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2021\/03\/beryllium-copper-properties-density-strength-price.png\" alt=\"ber\u00edlio cobre propriedades densidade for\u00e7a pre\u00e7o\" width=\"500\" height=\"500\" srcset=\"https:\/\/material-properties.org\/wp-content\/uploads\/2021\/03\/beryllium-copper-properties-density-strength-price.png 1000w, https:\/\/material-properties.org\/wp-content\/uploads\/2021\/03\/beryllium-copper-properties-density-strength-price-300x300.png 300w, https:\/\/material-properties.org\/wp-content\/uploads\/2021\/03\/beryllium-copper-properties-density-strength-price-150x150.png 150w, https:\/\/material-properties.org\/wp-content\/uploads\/2021\/03\/beryllium-copper-properties-density-strength-price-768x768.png 768w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><\/a><\/p>\n<p><span><div class=\"su-divider su-divider-style-dotted\" style=\"margin:25px 0;border-width:3px;border-color:#999999\"><\/div><\/span><\/p>\n<h3 style=\"text-align: center;\"><span>Resumo<\/span><\/h3>\n<table class=\"a\">\n<tbody>\n<tr class=\"b\">\n<td style=\"text-align: center;\"><span>Nome<\/span><\/td>\n<td style=\"text-align: center;\"><strong><span>Cobre Ber\u00edlio<\/span><\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\"><span>Fase em STP<\/span><\/td>\n<td style=\"text-align: center;\"><strong><span>N\/D<\/span><\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\"><span>Densidade<\/span><\/td>\n<td style=\"text-align: center;\"><strong><span>8250 kg\/m<sup>3<\/sup><\/span><\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\"><span>Resist\u00eancia \u00e0 tra\u00e7\u00e3o<\/span><\/td>\n<td style=\"text-align: center;\"><strong><span>1110 MPa<\/span><\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\"><span>For\u00e7a de Rendimento<\/span><\/td>\n<td style=\"text-align: center;\"><strong><span>1110 MPa<\/span><\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\"><span>M\u00f3dulo de elasticidade de Young<\/span><\/td>\n<td style=\"text-align: center;\"><strong><span>131 GPa<\/span><\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\"><span>Dureza Brinell<\/span><\/td>\n<td style=\"text-align: center;\"><strong><span>150 BHN<\/span><\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\"><span>Ponto de fus\u00e3o<\/span><\/td>\n<td style=\"text-align: center;\"><strong><span>866\u00b0C<\/span><\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\"><span>Condutividade t\u00e9rmica<\/span><\/td>\n<td style=\"text-align: center;\"><strong><span>115 W\/mK<\/span><\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\"><span>Capacidade de calor<\/span><\/td>\n<td style=\"text-align: center;\"><strong><span style=\"text-align: start;\"><span>420 J\/gK<\/span><\/span><\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\"><span>Pre\u00e7o<\/span><\/td>\n<td style=\"text-align: center;\"><strong><span>13 $\/kg<\/span><\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span><div class=\"su-divider su-divider-style-dotted\" style=\"margin:25px 0;border-width:3px;border-color:#999999\"><\/div><\/span><\/p>\n<p><a href=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/07\/composition-copper-beryllium.png\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-29445\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/07\/composition-copper-beryllium.png\" alt=\"cobre ber\u00edlio\" width=\"931\" height=\"100\" \/><\/a><\/p>\n<p><span><\/span><\/p><\/div><\/div> <div  class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<p style=\"text-align: center;\"><span style=\"font-size: 50px;\"><span>97,9%<\/span><a href=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/09\/Copper-periodic-table.png\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-thumbnail wp-image-92309\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/09\/Copper-periodic-table-150x150.png\" alt=\"Cobre na Tabela Peri\u00f3dica\" width=\"150\" height=\"150\" \/><\/a><\/span><\/p>\n<p><span><\/span><\/p><\/div><\/div> <div  class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<p style=\"text-align: center;\"><span style=\"font-size: 50px;\"><span>1,9%<\/span><a href=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/09\/Beryllium-periodic-table.png\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-thumbnail wp-image-92269\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/09\/Beryllium-periodic-table-150x150.png\" alt=\"Ber\u00edlio na Tabela Peri\u00f3dica\" width=\"150\" height=\"150\" \/><\/a><\/span><\/p>\n<p><span><\/span><\/p><\/div><\/div> <div  class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<p><span><\/span><\/p><\/div><\/div> <div  class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\"> <\/div><\/div><\/span><\/p>\n<p><span><div class=\"su-divider su-divider-style-dotted\" style=\"margin:25px 0;border-width:3px;border-color:#999999\"><\/div><\/span><\/p>\n<h2><span>Propriedades do Bronze de Ber\u00edlio<\/span><\/h2>\n<p><strong><span>As propriedades dos materiais<\/span><\/strong><span>\u00a0s\u00e3o\u00a0<\/span><strong><span>propriedades intensivas<\/span><\/strong><span>, ou seja, independem\u00a0<\/span><strong><span>da quantidade<\/span><\/strong><span>\u00a0de massa e podem variar de um lugar para outro dentro do sistema a qualquer momento.\u00a0A base da ci\u00eancia dos materiais envolve estudar a estrutura dos materiais e relacion\u00e1-los com suas propriedades (mec\u00e2nicas, el\u00e9tricas, etc.).\u00a0Uma vez que um cientista de materiais conhe\u00e7a essa correla\u00e7\u00e3o estrutura-propriedade, ele poder\u00e1 estudar o desempenho relativo de um material em uma determinada aplica\u00e7\u00e3o.\u00a0Os principais determinantes da estrutura de um material e, portanto, de suas propriedades s\u00e3o seus elementos qu\u00edmicos constituintes e a maneira como ele foi processado em sua forma final.<\/span><\/p>\n<h3><span>Propriedades Mec\u00e2nicas do Bronze Ber\u00edlio<\/span><\/h3>\n<p><span>Os materiais s\u00e3o freq\u00fcentemente escolhidos para v\u00e1rias aplica\u00e7\u00f5es porque possuem combina\u00e7\u00f5es desej\u00e1veis \u200b\u200bde caracter\u00edsticas mec\u00e2nicas.\u00a0Para aplica\u00e7\u00f5es estruturais, as propriedades do material s\u00e3o cruciais e os engenheiros devem lev\u00e1-las em considera\u00e7\u00e3o.<\/span><\/p>\n<h3><span>For\u00e7a do Bronze de Ber\u00edlio<\/span><\/h3>\n<p><span>Na mec\u00e2nica dos materiais, a\u00a0<\/span><a href=\"https:\/\/material-properties.org\/what-is-strength-definition\/\"><strong><span>resist\u00eancia de um material<\/span><\/strong><\/a><span>\u00a0\u00e9 sua capacidade de suportar uma carga aplicada sem falha ou deforma\u00e7\u00e3o pl\u00e1stica.\u00a0<\/span><strong><span>A resist\u00eancia dos materiais<\/span><\/strong><span>\u00a0considera basicamente a rela\u00e7\u00e3o entre as\u00a0<\/span><strong><span>cargas externas aplicadas a um material e a\u00a0<\/span><\/strong><strong><span>deforma\u00e7\u00e3o<\/span><\/strong><span>\u00a0resultante\u00a0ou mudan\u00e7a nas dimens\u00f5es do material.\u00a0<\/span><strong><span>A resist\u00eancia de um material<\/span><\/strong><span>\u00a0\u00e9 sua capacidade de suportar essa carga aplicada sem falha ou deforma\u00e7\u00e3o pl\u00e1stica.<\/span><\/p>\n<h3><span>Resist\u00eancia \u00e0 tra\u00e7\u00e3o<\/span><\/h3>\n<p><span>A resist\u00eancia \u00e0 tra\u00e7\u00e3o final do\u00a0<\/span><strong><span>cobre\u00a0<\/span><\/strong><strong><span>ber\u00edlio &#8211; UNS C17200<\/span><\/strong><span>\u00a0\u00e9 de cerca de 1110 MPa.<\/span><\/p>\n<p><a href=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/01\/Yield-Strength-Ultimate-Tensile-Strength-Table-of-Materials.png\"><img decoding=\"async\" loading=\"lazy\" class=\"alignright size-medium wp-image-27807\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/01\/Yield-Strength-Ultimate-Tensile-Strength-Table-of-Materials-239x300.png\" alt=\"Resist\u00eancia ao escoamento - Resist\u00eancia \u00e0 tra\u00e7\u00e3o m\u00e1xima - Tabela de materiais\" width=\"239\" height=\"300\" \/><\/a><span>A\u00a0<\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/materials-science\/material-properties\/strength\/stress-strain-curve-stress-strain-diagram\/ultimate-tensile-strength-uts\/\"><strong><span>resist\u00eancia \u00e0 tra\u00e7\u00e3o final<\/span><\/strong><\/a><span>\u00a0\u00e9 o m\u00e1ximo na\u00a0<\/span><a href=\"https:\/\/material-properties.org\/what-is-stress-strain-curve-stress-strain-diagram-definition\/\"><span>curva de tens\u00e3o-deforma\u00e7\u00e3o<\/span><\/a><span> de engenharia.\u00a0Isso corresponde \u00e0\u00a0<\/span><strong><span>tens\u00e3o m\u00e1xima <\/span><\/strong><span>que pode ser sustentado por uma estrutura em tens\u00e3o. A resist\u00eancia \u00e0 tra\u00e7\u00e3o final \u00e9 muitas vezes abreviada para \u201cresist\u00eancia \u00e0 tra\u00e7\u00e3o\u201d ou mesmo para \u201co m\u00e1ximo\u201d. Se essa tens\u00e3o for aplicada e mantida, ocorrer\u00e1 fratura. Freq\u00fcentemente, esse valor \u00e9 significativamente maior do que o limite de escoamento (at\u00e9 50 a 60 por cento a mais do que o rendimento de alguns tipos de metais). Quando um material d\u00factil atinge sua resist\u00eancia m\u00e1xima, ele sofre estric\u00e7\u00e3o onde a \u00e1rea da se\u00e7\u00e3o transversal \u00e9 reduzida localmente. A curva tens\u00e3o-deforma\u00e7\u00e3o n\u00e3o cont\u00e9m tens\u00e3o maior do que a resist\u00eancia m\u00e1xima. Mesmo que as deforma\u00e7\u00f5es possam continuar a aumentar, a tens\u00e3o geralmente diminui ap\u00f3s o limite de resist\u00eancia ter sido alcan\u00e7ado. \u00c9 uma propriedade intensiva; portanto, seu valor n\u00e3o depende do tamanho do corpo de prova. Por\u00e9m, depende de outros fatores, como o preparo do corpo de prova,\u00a0<\/span><strong><span>temperatura<\/span><\/strong><span>\u00a0do ambiente de teste e do material.\u00a0<\/span><strong><span>A resist\u00eancia m\u00e1xima \u00e0 tra\u00e7\u00e3o<\/span><\/strong><span>\u00a0varia de 50 MPa para um alum\u00ednio at\u00e9 3000 MPa para a\u00e7os de alta resist\u00eancia.<\/span><\/p>\n<h3><span>For\u00e7a de Rendimento<\/span><\/h3>\n<p><span>A resist\u00eancia ao escoamento do\u00a0<\/span><strong><span>cobre ber\u00edlio &#8211; UNS C17200<\/span><\/strong><span>\u00a0\u00e9 de cerca de 1100 MPa.<\/span><\/p>\n<p><span>O\u00a0<\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/materials-science\/material-properties\/strength\/stress-strain-curve-stress-strain-diagram\/yield-strength-yield-point\/\"><strong><span>ponto de escoamento<\/span><\/strong><\/a><span>\u00a0\u00e9 o ponto em uma\u00a0<\/span><a href=\"https:\/\/material-properties.org\/what-is-stress-strain-curve-stress-strain-diagram-definition\/\"><span>curva tens\u00e3o-deforma\u00e7\u00e3o<\/span><\/a><span>\u00a0que indica o limite do comportamento el\u00e1stico e o in\u00edcio do comportamento pl\u00e1stico.\u00a0<\/span><strong><span>For\u00e7a de rendimento <\/span><\/strong><span>ou tens\u00e3o de escoamento \u00e9 a propriedade do material definida como a tens\u00e3o na qual um material come\u00e7a a se deformar plasticamente, enquanto o ponto de escoamento \u00e9 o ponto onde come\u00e7a a deforma\u00e7\u00e3o n\u00e3o linear (el\u00e1stica + pl\u00e1stica).\u00a0Antes do ponto de escoamento, o material se deformar\u00e1 elasticamente e retornar\u00e1 \u00e0 sua forma original quando a tens\u00e3o aplicada for removida.\u00a0Uma vez ultrapassado o ponto de escoamento, alguma fra\u00e7\u00e3o da deforma\u00e7\u00e3o ser\u00e1 permanente e irrevers\u00edvel.\u00a0Alguns a\u00e7os e outros materiais exibem um comportamento denominado fen\u00f4meno do ponto de escoamento.\u00a0As resist\u00eancias ao escoamento variam de 35 MPa para um alum\u00ednio de baixa resist\u00eancia a mais de 1400 MPa para a\u00e7os de resist\u00eancia muito alta.<\/span><\/p>\n<h3><span>M\u00f3dulo de elasticidade de Young<\/span><\/h3>\n<p><span>O m\u00f3dulo de elasticidade de Young do\u00a0<\/span><strong><span>cobre-\u00a0<\/span><\/strong><strong><span>ber\u00edlio \u2013 UNS C17200<\/span><\/strong><span>\u00a0\u00e9 de cerca de 131 GPa.<\/span><\/p>\n<p><span>O\u00a0<\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/materials-science\/material-properties\/strength\/hookes-law\/youngs-modulus-of-elasticity\/\"><span>m\u00f3dulo de elasticidade de Young<\/span><\/a><span>\u00a0\u00e9 o m\u00f3dulo de elasticidade para tens\u00e3o de tra\u00e7\u00e3o e compress\u00e3o no regime de elasticidade linear de uma deforma\u00e7\u00e3o uniaxial e geralmente \u00e9 avaliado por ensaios de tra\u00e7\u00e3o.\u00a0At\u00e9 uma tens\u00e3o limite, um corpo poder\u00e1 recuperar suas dimens\u00f5es com a retirada da carga.\u00a0As tens\u00f5es aplicadas fazem com que os \u00e1tomos em um cristal se movam de sua posi\u00e7\u00e3o de equil\u00edbrio.\u00a0Todos os\u00a0<\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-power\/reactor-physics\/atomic-nuclear-physics\/atom-properties-of-atoms\/\"><span>\u00e1tomos<\/span><\/a><span>\u00a0s\u00e3o deslocados na mesma quantidade e ainda mant\u00eam sua geometria relativa.\u00a0Quando as tens\u00f5es s\u00e3o removidas, todos os \u00e1tomos retornam \u00e0s suas posi\u00e7\u00f5es originais e nenhuma deforma\u00e7\u00e3o permanente ocorre.\u00a0De acordo com a\u00a0<\/span><strong><a href=\"https:\/\/material-properties.org\/what-is-hookes-law-definition\/\"><span>lei de Hooke<\/span><\/a><span>,<\/span><\/strong><span>\u00a0a tens\u00e3o \u00e9 proporcional \u00e0 deforma\u00e7\u00e3o (na regi\u00e3o el\u00e1stica), e a inclina\u00e7\u00e3o \u00e9 o\u00a0<\/span><strong><span>m\u00f3dulo de Young<\/span><\/strong><span>.\u00a0O m\u00f3dulo de Young \u00e9 igual \u00e0 tens\u00e3o longitudinal dividida pela deforma\u00e7\u00e3o.<\/span><\/p>\n<p><a href=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/01\/Hookes-law-equation.png\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-27811\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/01\/Hookes-law-equation.png\" alt=\"\" width=\"320\" height=\"164\" \/><\/a><\/p>\n<h2><span>Dureza do bronze de ber\u00edlio<\/span><\/h2>\n<p><span>A dureza Rockwell do\u00a0<\/span><strong><span>cobre\u00a0<\/span><\/strong><strong><span>ber\u00edlio &#8211; UNS C17200<\/span><\/strong><span>\u00a0\u00e9 de aproximadamente 82 HRB.<\/span><\/p>\n<p><a href=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/01\/table-brinell-hardness-numbers.png\"><img decoding=\"async\" loading=\"lazy\" class=\"alignright size-full wp-image-28044\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/01\/table-brinell-hardness-numbers.png\" alt=\"n\u00famero de dureza Brinell\" width=\"288\" height=\"297\" \/><\/a><\/p>\n<p><strong><span>O teste de dureza Rockwell<\/span><\/strong><span> \u00e9 um dos testes de dureza de indenta\u00e7\u00e3o mais comuns, que foi desenvolvido para testes de dureza.\u00a0Em contraste com o teste Brinell, o testador Rockwell mede a profundidade de penetra\u00e7\u00e3o de um penetrador sob uma grande carga (carga principal) em compara\u00e7\u00e3o com a penetra\u00e7\u00e3o feita por uma pr\u00e9-carga (carga menor).\u00a0A carga menor estabelece a posi\u00e7\u00e3o zero.\u00a0A carga principal \u00e9 aplicada e, em seguida, removida, mantendo a carga secund\u00e1ria.\u00a0A diferen\u00e7a entre a profundidade de penetra\u00e7\u00e3o antes e depois da aplica\u00e7\u00e3o da carga principal \u00e9 usada para calcular o\u00a0<\/span><strong><span>n\u00famero de dureza Rockwell<\/span><\/strong><span>. Ou seja, a profundidade de penetra\u00e7\u00e3o e a dureza s\u00e3o inversamente proporcionais. A principal vantagem da dureza Rockwell \u00e9 sua capacidade de\u00a0<\/span><strong><span>exibir valores de dureza diretamente<\/span><\/strong><span>. O resultado \u00e9 um n\u00famero adimensional anotado como\u00a0<\/span><strong><span>HRA, HRB, HRC<\/span><\/strong><span>, etc., onde a \u00faltima letra \u00e9 a respectiva escala Rockwell.<\/span><\/p>\n<p><span>O teste Rockwell C \u00e9 realizado com um penetrador Brale (<\/span><strong><span>cone de diamante de 120\u00b0<\/span><\/strong><span>) e uma carga maior de 150kg.<\/span><\/p>\n<h2><span>Propriedades T\u00e9rmicas do Bronze Ber\u00edlio<\/span><\/h2>\n<p><strong><span>As propriedades t\u00e9rmicas<\/span><\/strong><span> dos materiais referem-se \u00e0 resposta dos materiais \u00e0s mudan\u00e7as de <\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/<a href=\"https:\/\/modern-physics.org\/thermodynamics\/\">thermodynamics<\/a>\/thermodynamic-properties\/what-is-temperature-physics\/&#8221;><span>temperatura<\/span><\/a><span>\u00a0e \u00e0 aplica\u00e7\u00e3o de\u00a0<\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/heat-transfer\/introduction-to-heat-transfer\/heat-in-physics-definition-of-heat\/\"><span>calor<\/span><\/a><span>.\u00a0\u00c0 medida que um s\u00f3lido absorve\u00a0<\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/<a href=\"https:\/\/modern-physics.org\/thermodynamics\/\">thermodynamics<\/a>\/what-is-energy-physics\/&#8221;><span>energia<\/span><\/a><span>\u00a0na forma de calor, sua temperatura aumenta e suas dimens\u00f5es aumentam.\u00a0Mas\u00a0<\/span><strong><span>diferentes materiais reagem<\/span><\/strong><span>\u00a0\u00e0 aplica\u00e7\u00e3o de calor\u00a0<\/span><strong><span>de forma diferente<\/span><\/strong><span>.<\/span><\/p>\n<p><a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/materials-science\/material-properties\/thermal-properties-of-materials\/specific-heat-capacity-of-materials\/\"><span>A capacidade t\u00e9rmica<\/span><\/a><span>,\u00a0<\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/materials-science\/material-properties\/thermal-properties-of-materials\/coefficient-of-thermal-expansion-of-materials\/\"><span>a expans\u00e3o t\u00e9rmica<\/span><\/a><span>\u00a0e\u00a0<\/span><a href=\"https:\/\/www.thermal-engineering.org\/what-is-thermal-conductivity-definition\/\"><span>a condutividade t\u00e9rmica<\/span><\/a><span>\u00a0s\u00e3o propriedades frequentemente cr\u00edticas no uso pr\u00e1tico de s\u00f3lidos.<\/span><\/p>\n<h3><span>Ponto de Fus\u00e3o do Bronze Ber\u00edlio<\/span><\/h3>\n<p><span>O ponto de fus\u00e3o do\u00a0<\/span><strong><span>cobre-\u00a0<\/span><\/strong><strong><span>ber\u00edlio \u2013 UNS C17200<\/span><\/strong><span>\u00a0\u00e9 de cerca de 866\u00b0C.<\/span><\/p>\n<p><span>Em geral, <\/span><strong><span>a fus\u00e3o<\/span><\/strong><span> \u00e9 uma\u00a0<\/span><strong><span>mudan\u00e7a de fase<\/span><\/strong><span> de uma subst\u00e2ncia da fase s\u00f3lida para a fase l\u00edquida.\u00a0O\u00a0<\/span><a href=\"https:\/\/material-properties.org\/melting-point-of-chemical-elements\/\"><strong><span>ponto de fus\u00e3o<\/span><\/strong><\/a><span> de uma subst\u00e2ncia \u00e9 a temperatura na qual ocorre essa mudan\u00e7a de fase. O\u00a0<\/span><strong><span>ponto de fus\u00e3o <\/span><\/strong><span>tamb\u00e9m define uma condi\u00e7\u00e3o na qual o s\u00f3lido e o l\u00edquido podem existir em equil\u00edbrio.<\/span><\/p>\n<h3><span>Condutividade T\u00e9rmica do Bronze Ber\u00edlio<\/span><\/h3>\n<p><span>A condutividade t\u00e9rmica do\u00a0<\/span><strong><span>cobre-\u00a0<\/span><\/strong><strong><span>ber\u00edlio \u2013 UNS C17200<\/span><\/strong><span>\u00a0\u00e9 de 115 W\/(mK).<\/span><\/p>\n<p><span>As caracter\u00edsticas de transfer\u00eancia de calor de um material s\u00f3lido s\u00e3o medidas por uma propriedade chamada <\/span><a href=\"https:\/\/www.thermal-engineering.org\/what-is-thermal-conductivity-definition\/\"><strong><span>condutividade t\u00e9rmica<\/span><\/strong><\/a><span>, k (ou \u03bb), medida em\u00a0<\/span><strong><span>W\/mK<\/span><\/strong><span>. \u00c9 uma medida da capacidade de uma subst\u00e2ncia de transferir calor atrav\u00e9s de um material por\u00a0<\/span><a href=\"https:\/\/www.thermal-engineering.org\/what-is-thermal-conduction-heat-conduction-definition\/\"><span>condu\u00e7\u00e3o<\/span><\/a><span>.\u00a0Observe que\u00a0<\/span><a href=\"https:\/\/www.thermal-engineering.org\/what-is-fouriers-law-of-thermal-conduction-definition\/\"><strong><span>a lei de Fourier<\/span><\/strong><\/a><span> se aplica a toda mat\u00e9ria, independentemente de seu estado (s\u00f3lido, l\u00edquido ou gasoso), portanto, tamb\u00e9m \u00e9 definida para l\u00edquidos e gases.<\/span><\/p>\n<p><span>A <\/span><a href=\"https:\/\/www.thermal-engineering.org\/what-is-thermal-conductivity-definition\/\"><strong><span>condutividade t\u00e9rmica<\/span><\/strong><\/a><span>\u00a0da maioria dos l\u00edquidos e s\u00f3lidos varia com a temperatura.\u00a0Para vapores, tamb\u00e9m depende da press\u00e3o.\u00a0Em geral:<\/span><\/p>\n<p><a href=\"https:\/\/www.nuclear-power.com\/wp-content\/uploads\/2017\/10\/thermal-conductivity-definition.png\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-20041\" src=\"https:\/\/www.nuclear-power.com\/wp-content\/uploads\/2017\/10\/thermal-conductivity-definition.png\" alt=\"condutividade t\u00e9rmica - defini\u00e7\u00e3o\" width=\"225\" height=\"75\" \/><\/a><\/p>\n<p><span>A maioria dos materiais s\u00e3o quase homog\u00eaneos, portanto podemos geralmente escrever <\/span><strong><span>k = k (T)<\/span><\/strong><span>.\u00a0Defini\u00e7\u00f5es semelhantes est\u00e3o associadas \u00e0s condutividades t\u00e9rmicas nas dire\u00e7\u00f5es y e z (ky, kz), mas para um material isotr\u00f3pico a condutividade t\u00e9rmica \u00e9 independente da dire\u00e7\u00e3o de transfer\u00eancia, kx = ky = kz = k.<\/span><\/p>\n<p><span><div  class=\"lgc-column lgc-grid-parent lgc-grid-100 lgc-tablet-grid-100 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<p><span><div class=\"su-accordion su-u-trim\"><div class=\"su-spoiler su-spoiler-style-default su-spoiler-icon-plus\" data-scroll-offset=\"0\" data-anchor-in-url=\"no\"><div class=\"su-spoiler-title\" tabindex=\"0\" role=\"button\"><span class=\"su-spoiler-icon\"><\/span>Refer\u00eancias:<\/div><div class=\"su-spoiler-content su-u-clearfix su-u-trim\">Ci\u00eancia dos Materiais:<\/div><\/div><\/div><\/span><\/p>\n<p><span>Departamento de Energia dos EUA, Ci\u00eancia de Materiais.\u00a0DOE Fundamentals Handbook, Volume 1 e 2. Janeiro de 1993.<\/span><br \/>\n<span>Departamento de Energia dos EUA, Ci\u00eancia de Materiais.\u00a0DOE Fundamentals Handbook, Volume 2 e 2. Janeiro de 1993.<\/span><br \/>\n<span>William D. Callister, David G. Rethwisch.\u00a0Ci\u00eancia e Engenharia de Materiais: Uma Introdu\u00e7\u00e3o 9\u00aa Edi\u00e7\u00e3o, Wiley;\u00a09 edi\u00e7\u00e3o (4 de dezembro de 2013), ISBN-13: 978-1118324578.<\/span><br \/>\n<span>Eberhart, Mark (2003).\u00a0Por que as coisas quebram: entendendo o mundo pela maneira como ele se desfaz.\u00a0Harmonia.\u00a0ISBN 978-1-4000-4760-4.<\/span><br \/>\n<span>Gaskell, David R. (1995).\u00a0Introdu\u00e7\u00e3o \u00e0 Termodin\u00e2mica dos Materiais (4\u00aa ed.).\u00a0Editora Taylor e Francis.\u00a0ISBN 978-1-56032-992-3.<\/span><br \/>\n<span>Gonz\u00e1lez-Vi\u00f1as, W. &amp; Mancini, HL (2004).\u00a0Uma Introdu\u00e7\u00e3o \u00e0 Ci\u00eancia dos Materiais.\u00a0Princeton University Press.\u00a0ISBN 978-0-691-07097-1.<\/span><br \/>\n<span>Ashby, Michael;\u00a0Hugh Shercliff;\u00a0David Cebon (2007).\u00a0Materiais: engenharia, ci\u00eancia, processamento e design (1\u00aa ed.).\u00a0Butterworth-Heinemann.\u00a0ISBN 978-0-7506-8391-3.<\/span><br \/>\n<span>JR Lamarsh, AJ Baratta, Introdu\u00e7\u00e3o \u00e0 Engenharia Nuclear, 3\u00aa ed., Prentice-Hall, 2001, ISBN: 0-201-82498-1.<\/span><br \/>\n<span><\/span><\/p><\/div><\/div><div class=\"su-divider su-divider-style-dotted\" style=\"margin:15px 0;border-width:2px;border-color:#999999\"><\/div><div class=\"su-divider su-divider-style-default\" style=\"margin:15px 0;border-width:2px;border-color:#999999\"><\/div><div  class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\"><\/div><\/div><div  class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<p><span>Veja acima:<\/span><br \/>\n<span>Bronze<a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/metals-what-are-metals\/alloys-composition-properties-of-metal-alloys\/copper-alloys\/bronze \/\" class=\"su-button su-button-style-flat\" style=\"color:#606060;background-color:#ffffff;border-color:#cccccc;border-radius:10px;-moz-border-radius:10px;-webkit-border-radius:10px\" target=\"_self\"><span style=\"color:#606060;padding:7px 20px;font-size:16px;line-height:24px;border-color:#ffffff;border-radius:10px;-moz-border-radius:10px;-webkit-border-radius:10px;text-shadow:0px 0px 0px #000000 ;-moz-text-shadow:0px 0px 0px #000000 ;-webkit-text-shadow:0px 0px 0px #000000 \"><i class=\"sui sui-link\" style=\"font-size:16px;color:#5d5d5d\"><\/i> <\/span><\/a><\/span><\/p><\/div><\/div><div  class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\"><\/div><\/div><\/span><\/p>\n<p><span><div class=\"su-divider su-divider-style-dotted\" style=\"margin:15px 0;border-width:2px;border-color:#999999\"><\/div><\/span><\/p>\n<p><span>Esperamos que este artigo,\u00a0<\/span><strong><span>Ber\u00edlio Bronze<\/span><\/strong><span>, ajude voc\u00ea.\u00a0Se sim,\u00a0<\/span><strong><span>d\u00ea um like<\/span><\/strong><span>\u00a0na barra lateral.\u00a0O objetivo principal deste site \u00e9 ajudar o p\u00fablico a aprender algumas informa\u00e7\u00f5es interessantes e importantes sobre materiais e suas propriedades.<\/span><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Propriedades do Bronze de Ber\u00edlio As propriedades dos materiais\u00a0s\u00e3o\u00a0propriedades intensivas, ou seja, independem\u00a0da quantidade\u00a0de massa e podem variar de um lugar para outro dentro do sistema a qualquer momento.\u00a0A base da ci\u00eancia dos materiais envolve estudar a estrutura dos materiais e relacion\u00e1-los com suas propriedades (mec\u00e2nicas, el\u00e9tricas, etc.).\u00a0Uma vez que um cientista de materiais conhe\u00e7a &#8230; <a title=\"O que \u00e9 Bronze Ber\u00edlio &#8211; Defini\u00e7\u00e3o\" class=\"read-more\" href=\"https:\/\/material-properties.org\/pt-br\/o-que-e-bronze-berilio-definicao\/\">Ler mais&#8230;<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[53],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>O que \u00e9 Bronze de Ber\u00edlio - Defini\u00e7\u00e3o | Propriedades do Material<\/title>\n<meta name=\"description\" content=\"O cobre-ber\u00edlio, tamb\u00e9m conhecido como bronze-ber\u00edlio, \u00e9 uma liga de cobre com 0,5 a 3% de ber\u00edlio. 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