{"id":1419,"date":"2025-10-16T14:29:25","date_gmt":"2025-10-16T06:29:25","guid":{"rendered":"https:\/\/www.xunshi-alloy.com\/?p=1419"},"modified":"2025-10-17T09:08:18","modified_gmt":"2025-10-17T01:08:18","slug":"magnetic-shape-memory-alloy-introduction","status":"publish","type":"post","link":"https:\/\/www.xunshi-alloy.com\/fr\/news\/magnetic-shape-memory-alloy-introduction\/","title":{"rendered":"Introduction aux alliages magn\u00e9tiques \u00e0 m\u00e9moire de forme"},"content":{"rendered":"<div class=\"text\">\n<p>Les alliages magn\u00e9tiques \u00e0 m\u00e9moire de forme sont des mat\u00e9riaux ferromagn\u00e9tiques qui produisent des forces et des mouvements sous des champs magn\u00e9tiques mod\u00e9r\u00e9s. Un alliage monocristallin typique en nickel, mangan\u00e8se et gallium est capable de produire une d\u00e9formation de 6% sous une charge ext\u00e9rieure. Ils le font avec des fr\u00e9quences dans la plage inf\u00e9rieure du kilohertz.<\/p>\n<p>&nbsp;<\/p>\n<p>Alliage magn\u00e9tique \u00e0 m\u00e9moire de forme<\/p>\n<p>(Ni50\/Mn28\/Ga22)<\/p>\n<p>&nbsp;<\/p>\n<p>Propri\u00e9t\u00e9s \u00e9lectriques<\/p>\n<p>R\u00e9sistivit\u00e9 (\u00b5Ohmcm) 70<\/p>\n<p>Coefficient de temp\u00e9rature (K-1) 0.003<\/p>\n<p>&nbsp;<\/p>\n<p>Magn\u00e9tique<\/p>\n<p>Force coercitive (Hc) (a \u00b7 m-1) 4000<\/p>\n<p>Temp\u00e9rature de Curie (C) 95-105<\/p>\n<p>Perm\u00e9abilit\u00e9 initiale2<\/p>\n<p>Taux de p\u00e9n\u00e9tration maximum 90<\/p>\n<p>R\u00e9manence satur\u00e9e (Brem) (T) 0,02<\/p>\n<p>Densit\u00e9 de flux de saturation (T) 0,6<\/p>\n<p>&nbsp;<\/p>\n<p>Propri\u00e9t\u00e9s m\u00e9caniques<\/p>\n<p>Duret\u00e9-Duret\u00e9 Vickers (kgf mm-2) 130<\/p>\n<p>Module d'\u00e9lasticit\u00e9 (GPa) 8-20<\/p>\n<p>&nbsp;<\/p>\n<p>Propri\u00e9t\u00e9s physiques<\/p>\n<p>Densit\u00e9 (g cm-3) 8<\/p>\n<p>Point de fusion (C) 1130<\/p>\n<p>&nbsp;<\/p>\n<p>Propri\u00e9t\u00e9s thermiques<\/p>\n<p>Temp\u00e9rature de cristallisation (C) 1090<\/p>\n<p>Temp\u00e9rature maximale d'utilisation dans l'air (C) 45<\/p>\n<p>Temp\u00e9rature-Aust\u00e9nite (C) 50<\/p>\n<p>Temp\u00e9rature-Martensite (C) 45<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Les alliages magn\u00e9tiques \u00e0 m\u00e9moire de forme sont des mat\u00e9riaux ferromagn\u00e9tiques qui produisent des forces et des mouvements sous des champs magn\u00e9tiques mod\u00e9r\u00e9s. Un alliage monocristallin typique en nickel, mangan\u00e8se et gallium est capable de produire une d\u00e9formation de 6% sous une charge ext\u00e9rieure. Ils le font avec des fr\u00e9quences dans la plage inf\u00e9rieure du kilohertz. Alliage magn\u00e9tique \u00e0 m\u00e9moire de forme (Ni50\/Mn28\/Ga22) \u00e9lectrique [\u2026]<\/p>","protected":false},"author":2,"featured_media":1422,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_seopress_robots_primary_cat":"none","footnotes":""},"categories":[59],"tags":[],"class_list":["post-1419","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.xunshi-alloy.com\/fr\/wp-json\/wp\/v2\/posts\/1419","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.xunshi-alloy.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xunshi-alloy.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xunshi-alloy.com\/fr\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xunshi-alloy.com\/fr\/wp-json\/wp\/v2\/comments?post=1419"}],"version-history":[{"count":1,"href":"https:\/\/www.xunshi-alloy.com\/fr\/wp-json\/wp\/v2\/posts\/1419\/revisions"}],"predecessor-version":[{"id":1423,"href":"https:\/\/www.xunshi-alloy.com\/fr\/wp-json\/wp\/v2\/posts\/1419\/revisions\/1423"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.xunshi-alloy.com\/fr\/wp-json\/wp\/v2\/media\/1422"}],"wp:attachment":[{"href":"https:\/\/www.xunshi-alloy.com\/fr\/wp-json\/wp\/v2\/media?parent=1419"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xunshi-alloy.com\/fr\/wp-json\/wp\/v2\/categories?post=1419"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xunshi-alloy.com\/fr\/wp-json\/wp\/v2\/tags?post=1419"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}