{"id":116951,"date":"2022-05-25T16:35:00","date_gmt":"2022-05-25T15:35:00","guid":{"rendered":"https:\/\/material-properties.org\/que-sont-les-solides-cristallins-materiaux-cristallins-definition\/"},"modified":"2022-05-31T06:33:01","modified_gmt":"2022-05-31T05:33:01","slug":"que-sont-les-solides-cristallins-materiaux-cristallins-definition","status":"publish","type":"post","link":"https:\/\/material-properties.org\/fr\/que-sont-les-solides-cristallins-materiaux-cristallins-definition\/","title":{"rendered":"Que sont les solides cristallins &#8211; Mat\u00e9riaux cristallins &#8211; D\u00e9finition"},"content":{"rendered":"<p><span><div class=\"su-quote su-quote-style-default\"><div class=\"su-quote-inner su-u-clearfix su-u-trim\">Les atomes des solides cristallins sont \u00e9troitement li\u00e9s les uns aux autres, soit dans un r\u00e9seau g\u00e9om\u00e9trique r\u00e9gulier (solides cristallins, qui comprennent les m\u00e9taux et la glace ordinaire).<\/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<p><span>En g\u00e9n\u00e9ral, les\u00a0<\/span><strong><span>solides<\/span><\/strong><span>\u00a0se caract\u00e9risent par une rigidit\u00e9 structurelle et une r\u00e9sistance aux changements de forme ou de volume.\u00a0Contrairement \u00e0 un liquide, un objet solide ne s&rsquo;\u00e9coule pas pour prendre la forme de son r\u00e9cipient, ni ne se dilate pour remplir tout le volume dont il dispose comme le fait un gaz.\u00a0Les solides ont de plus grandes attractions interatomiques que les liquides et les gaz.\u00a0Cependant, il existe de grandes variations dans les propri\u00e9t\u00e9s des mat\u00e9riaux solides utilis\u00e9s \u00e0 des fins d&rsquo;ing\u00e9nierie.\u00a0Les propri\u00e9t\u00e9s des mat\u00e9riaux d\u00e9pendent de leurs\u00a0<\/span><strong><span>liaisons interatomiques<\/span><\/strong><span>.\u00a0Ces m\u00eames liaisons dictent \u00e9galement l&rsquo;espace entre la configuration des atomes dans les solides.<\/span><\/p>\n<h2><span>Solides cristallins<\/span><\/h2>\n<figure id=\"attachment_27619\" aria-describedby=\"caption-attachment-27619\" style=\"width: 290px\" class=\"wp-caption alignright\"><a href=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/07\/Pyrite-Twinning.png\"><img decoding=\"async\" loading=\"lazy\" class=\"size-medium wp-image-27619\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/07\/Pyrite-Twinning-300x282.png\" alt=\"Cristal de pyrite macl\u00e9e\" width=\"300\" height=\"282\" \/><\/a><figcaption id=\"caption-attachment-27619\" class=\"wp-caption-text\"><span>Cristal de pyrite macl\u00e9e<\/span><\/figcaption><\/figure>\n<p><span>Les atomes d&rsquo;un\u00a0<\/span><strong><span>solide cristallin<\/span><\/strong><span>\u00a0sont \u00e9troitement li\u00e9s les uns aux autres, soit dans un r\u00e9seau g\u00e9om\u00e9trique\u00a0<\/span><strong><span>r\u00e9gulier<\/span><\/strong><span>\u00a0(solides cristallins, qui comprennent les m\u00e9taux et la glace ordinaire).\u00a0Un\u00a0<\/span><strong><span>mat\u00e9riau cristallin<\/span><\/strong><span>\u00a0est un mat\u00e9riau dans lequel les atomes sont situ\u00e9s dans un r\u00e9seau r\u00e9p\u00e9titif ou p\u00e9riodique sur de grandes distances atomiques, c&rsquo;est-\u00e0-dire qu&rsquo;il existe un ordre \u00e0 longue port\u00e9e, tel que lors de la solidification, les atomes se positionneront dans un motif tridimensionnel r\u00e9p\u00e9titif, en o\u00f9 chaque atome est li\u00e9 \u00e0 ses atomes voisins les plus proches.\u00a0Tous les solides ne sont pas des monocristaux.\u00a0Par exemple, lorsque l&rsquo;eau liquide commence \u00e0 geler, le changement de phase commence par de petits cristaux de glace qui se d\u00e9veloppent jusqu&rsquo;\u00e0 fusionner, formant une structure polycristalline.\u00a0Dans le dernier bloc de glace, chacun des petits cristaux (appel\u00e9s \u00ab\u00a0<\/span><strong><span>grains<\/span><\/strong><span>\u00ab\u00a0) est un vrai cristal avec un arrangement p\u00e9riodique d&rsquo;atomes, mais l&rsquo;ensemble du polycristal n&rsquo;a pas d&rsquo;arrangement p\u00e9riodique d&rsquo;atomes, car le motif p\u00e9riodique est rompu aux joints de\u00a0<\/span><strong><span>grains.<\/span><\/strong><\/p>\n<h2><span>Treillis de cristal<\/span><\/h2>\n<p><span>Certaines des propri\u00e9t\u00e9s des solides cristallins d\u00e9pendent de la\u00a0<\/span><a href=\"https:\/\/material-properties.org\/crystal-structure-of-chemical-elements\/\"><strong><span>structure cristalline<\/span><\/strong><\/a><span>\u00a0du mat\u00e9riau, de la mani\u00e8re dont les atomes, les ions ou les mol\u00e9cules sont dispos\u00e9s dans l&rsquo;espace.\u00a0Un\u00a0<\/span><strong><span>r\u00e9seau cristallin<\/span><\/strong><span>\u00a0est un motif r\u00e9p\u00e9titif de points math\u00e9matiques qui s&rsquo;\u00e9tend dans tout l&rsquo;espace.\u00a0Les forces de\u00a0<\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/materials-science\/atomic-and-chemical-bond\/\"><span>la liaison chimique<\/span><\/a><span>\u00a0provoquent cette r\u00e9p\u00e9tition.\u00a0C&rsquo;est ce motif r\u00e9p\u00e9t\u00e9 qui contr\u00f4le les propri\u00e9t\u00e9s telles que\u00a0<\/span><strong><span>la r\u00e9sistance<\/span><\/strong><span>, la\u00a0<\/span><strong><span>ductilit\u00e9<\/span><\/strong><span>, la\u00a0<\/span><a href=\"https:\/\/material-properties.org\/density-of-chemical-elements\/\"><strong><span>densit\u00e9<\/span><\/strong><\/a><span>, la\u00a0<\/span><a href=\"https:\/\/material-properties.org\/thermal-conductivity-of-chemical-elements\/\"><strong><span>conductivit\u00e9<\/span><\/strong><\/a><span>\u00a0(propri\u00e9t\u00e9 de conduire ou de transmettre la chaleur, l&rsquo;\u00e9lectricit\u00e9, etc.) et\u00a0<\/span><strong><span>la forme<\/span><\/strong><span>.\u00a0Il existe 14 types g\u00e9n\u00e9raux de tels motifs connus sous le nom de\u00a0<\/span><strong><span>r\u00e9seaux de Bravais<\/span><\/strong><span>.<\/span><\/p>\n<p><span>Trois structures cristallines relativement simples se retrouvent pour la plupart des m\u00e9taux courants:<\/span><\/p>\n<ul>\n<li>\n<figure id=\"attachment_27612\" aria-describedby=\"caption-attachment-27612\" style=\"width: 357px\" class=\"wp-caption alignright\"><a href=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/07\/crystal-structure-lattice.png\"><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-27612\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/07\/crystal-structure-lattice.png\" alt=\"structure cristalline - r\u00e9seau\" width=\"367\" height=\"370\" \/><\/a><figcaption id=\"caption-attachment-27612\" class=\"wp-caption-text\"><span>Source: D\u00e9partement am\u00e9ricain de l&rsquo;\u00e9nergie, Science des mat\u00e9riaux. DOE Fundamentals Handbook, Volume 1 et 2. Janvier 1993.<\/span><\/figcaption><\/figure>\n<p><strong><span>Cubique centr\u00e9 sur le corps &#8211; bcc.\u00a0<\/span><\/strong><span>Dans un arrangement d&rsquo;atomes bcc (BCC), la cellule unitaire se compose de huit atomes aux coins d&rsquo;un cube et d&rsquo;un atome au centre du corps du cube.\u00a0Dans un arrangement bcc, une cellule unitaire contient (8 atomes de coin \u00d7 \u215b) + (1 atome central \u00d7 1) = 2 atomes.\u00a0Le garnissage est plus efficace (68%) que le simple cubique et la structure est courante pour les m\u00e9taux alcalins et les m\u00e9taux de transition pr\u00e9coce.\u00a0Les m\u00e9taux contenant des structures BCC comprennent la ferrite, le chrome, le vanadium, le molybd\u00e8ne et le tungst\u00e8ne.\u00a0Ces m\u00e9taux poss\u00e8dent une r\u00e9sistance \u00e9lev\u00e9e et une faible ductilit\u00e9.<\/span><\/p><\/li>\n<li><strong><span>Cubique \u00e0 faces centr\u00e9es &#8211; fcc.\u00a0<\/span><\/strong><span>Dans un arrangement d&rsquo;atomes fcc (FCC), la cellule unitaire se compose de huit atomes aux coins d&rsquo;un cube et d&rsquo;un atome au centre de chacune des faces du cube.\u00a0Dans un arrangement fcc, une cellule unitaire contient (8 atomes de coin \u00d7 \u215b) + (6 atomes de face \u00d7 \u00bd) = 4 atomes.\u00a0Cette structure, avec son parent hexagonal (hcp), a le garnissage le plus efficace (74%).\u00a0Les m\u00e9taux contenant des structures FCC comprennent l&rsquo;aust\u00e9nite, l&rsquo;aluminium, le cuivre, le plomb, l&rsquo;argent, l&rsquo;or, le nickel, le platine et le thorium.\u00a0Ces m\u00e9taux poss\u00e8dent une faible r\u00e9sistance et une ductilit\u00e9 \u00e9lev\u00e9e.<\/span><\/li>\n<li><strong><span>Hexagonal Compact &#8211; hcp.\u00a0<\/span><\/strong><span>Dans un arrangement d&rsquo;atomes hcp (HCP), la cellule unitaire est constitu\u00e9e de trois couches d&rsquo;atomes.\u00a0Les couches sup\u00e9rieure et inf\u00e9rieure contiennent six atomes aux coins d&rsquo;un hexagone et un atome au centre de chaque hexagone.\u00a0La couche interm\u00e9diaire contient trois atomes nich\u00e9s entre les atomes des couches sup\u00e9rieure et inf\u00e9rieure, d&rsquo;o\u00f9 le nom de compact.\u00a0Hexagonal Close Packed (hcp) est l&rsquo;un des deux types simples de garnissage atomique avec la densit\u00e9 la plus \u00e9lev\u00e9e, l&rsquo;autre \u00e9tant le cubique \u00e0 faces centr\u00e9es (fcc).\u00a0Cependant, contrairement au fcc, ce n&rsquo;est pas un r\u00e9seau de Bravais car il existe deux ensembles non \u00e9quivalents de points de r\u00e9seau.\u00a0Les m\u00e9taux contenant des structures HCP comprennent le b\u00e9ryllium, le magn\u00e9sium, le zinc, le cadmium, le cobalt, le thallium et le zirconium.\u00a0Les m\u00e9taux HCP ne sont pas aussi ductiles que les m\u00e9taux FCC.<\/span><\/li>\n<\/ul>\n<p><span><\/span><\/p><\/div><\/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<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>References :<\/div><div class=\"su-spoiler-content su-u-clearfix su-u-trim\">\u00a0<\/div><\/div><\/div><\/span><strong><span>Science des mat\u00e9riaux:<\/span><\/strong><\/p>\n<ol>\n<li><span>D\u00e9partement am\u00e9ricain de l&rsquo;\u00e9nergie, science des mat\u00e9riaux.\u00a0DOE Fundamentals Handbook, Volume 1 et 2. Janvier 1993.<\/span><\/li>\n<li><span>D\u00e9partement am\u00e9ricain de l&rsquo;\u00e9nergie, science des mat\u00e9riaux.\u00a0DOE Fundamentals Handbook, Volume 2 et 2. Janvier 1993.<\/span><\/li>\n<li><span>William D. Callister, David G. Rethwisch.\u00a0Science et g\u00e9nie des mat\u00e9riaux : une introduction 9e \u00e9dition, Wiley ;\u00a09 \u00e9dition (4 d\u00e9cembre 2013), ISBN-13\u00a0: 978-1118324578.<\/span><\/li>\n<li><span>En ligneEberhart, Mark (2003).\u00a0Pourquoi les choses se cassent\u00a0: Comprendre le monde par la mani\u00e8re dont il se d\u00e9compose.\u00a0Harmonie.\u00a0ISBN 978-1-4000-4760-4.<\/span><\/li>\n<li><span>Gaskell, David R. (1995).\u00a0Introduction \u00e0 la thermodynamique des mat\u00e9riaux (4e \u00e9d.).\u00a0\u00c9ditions Taylor et Francis.\u00a0ISBN 978-1-56032-992-3.<\/span><\/li>\n<li><span>Gonzalez-Vi\u00f1as, W. &amp; Mancini, HL (2004).\u00a0Une introduction \u00e0 la science des mat\u00e9riaux.\u00a0Presse universitaire de Princeton.\u00a0ISBN 978-0-691-07097-1<\/span><\/li>\n<li><span>Ashby, Michael;\u00a0Hugh Shercliff;\u00a0David Cebon (2007).\u00a0Mat\u00e9riaux: ing\u00e9nierie, science, traitement et conception (1\u00e8re \u00e9d.).\u00a0Butterworth-Heinemann.\u00a0ISBN 978-0-7506-8391-3.<\/span><\/li>\n<li><span>JR Lamarsh, AJ Baratta, Introduction au g\u00e9nie nucl\u00e9aire, 3e \u00e9d., Prentice-Hall, 2001, ISBN : 0-201-82498-1.<\/span><\/li>\n<\/ol>\n<p><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<h2><span>Voir au dessus:<\/span><\/h2>\n<p><span>Structure cristalline<a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/materials-science\/crystal-structures\/\" 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:6px 16px;font-size:13px;line-height:20px;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\"><img src=\"ic\u00f4ne : lien\" alt=\"\" style=\"width:20px;height:20px\" \/> <\/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>Nous esp\u00e9rons que cet article,\u00a0<\/span><strong><span>Solides cristallins &#8211; Mat\u00e9riaux cristallins<\/span><\/strong><span>, vous aidera.\u00a0Si oui,\u00a0<\/span><strong><span>donnez-nous un like<\/span><\/strong><span>\u00a0dans la barre lat\u00e9rale.\u00a0L&rsquo;objectif principal de ce site Web est d&rsquo;aider le public \u00e0 apprendre des informations int\u00e9ressantes et importantes sur les mat\u00e9riaux et leurs propri\u00e9t\u00e9s.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Nous esp\u00e9rons que cet article,\u00a0Solides cristallins &#8211; Mat\u00e9riaux cristallins, vous aidera.\u00a0Si oui,\u00a0donnez-nous un like\u00a0dans la barre lat\u00e9rale.\u00a0L&rsquo;objectif principal de ce site Web est d&rsquo;aider le public \u00e0 apprendre des informations int\u00e9ressantes et importantes sur les mat\u00e9riaux et leurs propri\u00e9t\u00e9s.<\/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 - 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