{"id":116763,"date":"2022-05-23T21:46:03","date_gmt":"2022-05-23T20:46:03","guid":{"rendered":"https:\/\/material-properties.org\/quest-ce-que-la-chaleur-latente-de-fusion-de-materiaux-definition\/"},"modified":"2022-05-24T18:18:08","modified_gmt":"2022-05-24T17:18:08","slug":"quest-ce-que-la-chaleur-latente-de-fusion-de-materiaux-definition","status":"publish","type":"post","link":"https:\/\/material-properties.org\/fr\/quest-ce-que-la-chaleur-latente-de-fusion-de-materiaux-definition\/","title":{"rendered":"Qu&rsquo;est-ce que la chaleur latente de fusion de mat\u00e9riaux &#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\">Chaleur latente de fusion des mat\u00e9riaux.\u00a0En cas de changement de phase solide \u00e0 liquide, le changement d&rsquo;enthalpie n\u00e9cessaire pour changer son \u00e9tat est connu sous le nom d&rsquo;enthalpie de fusion, (symbole \u2206Hfus; unit\u00e9: J) \u00e9galement connue sous le nom de chaleur (latente) de fusion.<\/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><strong><span>Les propri\u00e9t\u00e9s thermiques<\/span><\/strong><span> des mat\u00e9riaux font r\u00e9f\u00e9rence \u00e0 la r\u00e9ponse des mat\u00e9riaux aux changements de leur <\/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\/\u00a0\u00bb><span>temp\u00e9rature<\/span><span>\u00a0et \u00e0 l&rsquo;application 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>chaleur<\/span><\/a><span>.\u00a0Lorsqu&rsquo;un solide absorbe de\u00a0<\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/<a href=\"https:\/\/modern-physics.org\/thermodynamics\/\">thermodynamics<\/a>\/what-is-energy-physics\/\u00a0\u00bb><span>l&rsquo;\u00e9nergie<\/span><span>\u00a0sous forme de chaleur, sa temp\u00e9rature augmente et ses dimensions augmentent.\u00a0Mais\u00a0<\/span><strong><span>diff\u00e9rents mat\u00e9riaux r\u00e9agissent diff\u00e9remment\u00a0<\/span><\/strong><strong><span>\u00e0<\/span><\/strong><span> l&rsquo;application de chaleur.<\/span><\/p>\n<p><span>La capacit\u00e9 calorifique, la dilatation thermique et la conductivit\u00e9 thermique sont des propri\u00e9t\u00e9s qui sont souvent critiques dans l&rsquo;utilisation pratique des solides.<\/span><\/p>\n<h2><span>Chaleur latente de fusion des mat\u00e9riaux<\/span><\/h2>\n<p><span>En cas de changement de phase solide \u00e0 liquide, le changement d&rsquo;\u00a0<\/span><a href=\"https:\/\/www.thermal-engineering.org\/what-is-enthalpy-definition\/\"><span>enthalpie<\/span><\/a><span> n\u00e9cessaire pour changer son \u00e9tat est appel\u00e9\u00a0<\/span><a href=\"https:\/\/material-properties.org\/latent-heat-of-fusion-of-chemical-elements\/\"><strong><span>enthalpie de fusion<\/span><\/strong><\/a><span>, (symbole \u2206H<\/span><sub><span>fus<\/span><\/sub><span>; unit\u00e9: J) \u00e9galement appel\u00e9e <\/span><strong><span>chaleur (latente) de fusion<\/span><\/strong><span>.\u00a0La chaleur latente est la quantit\u00e9 de chaleur ajout\u00e9e ou retir\u00e9e d&rsquo;une substance pour produire un changement de phase.\u00a0Cette \u00e9nergie d\u00e9compose les forces d&rsquo;attraction intermol\u00e9culaires et doit \u00e9galement fournir l&rsquo;\u00e9nergie n\u00e9cessaire \u00e0 l&rsquo;expansion du syst\u00e8me (le <\/span><strong><span>travail p\u0394V<\/span><\/strong><span>).<\/span><\/p>\n<p><span>La phase liquide a une \u00e9nergie interne plus \u00e9lev\u00e9e que la phase solide.\u00a0Cela signifie que de l&rsquo;\u00e9nergie doit \u00eatre fournie \u00e0 un solide pour le faire fondre et que de l&rsquo;\u00e9nergie est lib\u00e9r\u00e9e d&rsquo;un liquide lorsqu&rsquo;il g\u00e8le, car les mol\u00e9cules du liquide subissent des forces intermol\u00e9culaires plus faibles et ont donc une \u00e9nergie potentielle plus \u00e9lev\u00e9e (une sorte d&rsquo;\u00e9nergie de dissociation des liaisons pour les forces intermol\u00e9culaires).<\/span><\/p>\n<p><span>La temp\u00e9rature \u00e0 laquelle la transition de phase se produit est le <\/span><strong><span>point de fusion<\/span><\/strong><span>.\u00a0Le <\/span><strong><a href=\"https:\/\/material-properties.org\/melting-point-of-chemical-elements\/\"><span>point de fusion<\/span><\/a> <\/strong><span>d\u00e9finit \u00e9galement une condition dans laquelle le solide et le liquide peuvent exister en \u00e9quilibre.\u00a0L&rsquo;ajout d&rsquo;une chaleur convertira le solide en liquide sans changement de temp\u00e9rature.\u00a0Au point de fusion, les deux phases d&rsquo;une substance, liquide et vapeur, ont des \u00e9nergies libres identiques et sont donc \u00e9galement susceptibles d&rsquo;exister.\u00a0En dessous du point de fusion, le solide est l&rsquo;\u00e9tat le plus stable des deux, alors qu&rsquo;au-dessus, la forme liquide est pr\u00e9f\u00e9r\u00e9e.\u00a0Le point de fusion d&rsquo;une substance d\u00e9pend de la pression et est g\u00e9n\u00e9ralement sp\u00e9cifi\u00e9 \u00e0 la pression standard.\u00a0Consid\u00e9r\u00e9e comme la temp\u00e9rature du passage inverse du liquide au solide, elle est appel\u00e9e point de cong\u00e9lation ou point de cristallisation.<\/span><\/p>\n<p><a href=\"https:\/\/www.nuclear-power.com\/wp-content\/uploads\/2017\/10\/heat-of-fusion-and-vaporization-chemical-elements-chart-min.png\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-large wp-image-18827\" src=\"https:\/\/www.nuclear-power.com\/wp-content\/uploads\/2017\/10\/heat-of-fusion-and-vaporization-chemical-elements-chart-min-1024x373.png\" alt=\"chaleur de fusion et de vaporisation\" width=\"1024\" height=\"373\" \/><\/a><\/p>\n<p><span>\u00a0<\/span><\/p>\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>Propri\u00e9t\u00e9s thermiques<a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/materials-science\/material-properties\/thermal-properties-of-materials\/\" class=\"su-button su-button-style-flat\" style=\"color:#606060;background-color:#ffffff ;border-color:#ffffff ;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\"><img src=\"icon : lien\" alt=\"\" style=\"width:24px;height:24px\" \/> <\/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>Chaleur latente de fusion des mat\u00e9riaux<\/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,\u00a0Chaleur latente de fusion des mat\u00e9riaux, 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 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Qu&#039;est-ce que la chaleur latente de fusion de mat\u00e9riaux - D\u00e9finition | Propri\u00e9t\u00e9s mat\u00e9rielles<\/title>\n<meta name=\"description\" content=\"Chaleur latente de fusion des mat\u00e9riaux. En cas de changement de phase solide \u00e0 liquide, le changement d&#039;enthalpie n\u00e9cessaire pour changer son \u00e9tat est connu sous le nom d&#039;enthalpie de fusion (symbole \u2206Hfus\u00a0; unit\u00e9\u00a0: J) \u00e9galement connue sous le nom de\u00a0chaleur (latente) de fusion.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/material-properties.org\/fr\/quest-ce-que-la-chaleur-latente-de-fusion-de-materiaux-definition\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Qu&#039;est-ce que la chaleur latente de fusion de mat\u00e9riaux - D\u00e9finition | Propri\u00e9t\u00e9s mat\u00e9rielles\" \/>\n<meta property=\"og:description\" content=\"Chaleur latente de fusion des mat\u00e9riaux. 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