{"id":4391,"date":"2025-08-12T11:56:43","date_gmt":"2025-08-12T03:56:43","guid":{"rendered":"https:\/\/www.powdergrindingmill.com\/?p=4391"},"modified":"2025-08-12T11:56:45","modified_gmt":"2025-08-12T03:56:45","slug":"preparation-methods-of-silicon-carbide-sic-micro-powder","status":"publish","type":"post","link":"https:\/\/www.powdergrindingmill.com\/fr\/preparation-methods-of-silicon-carbide-sic-micro-powder\/","title":{"rendered":"M\u00e9thodes de pr\u00e9paration de la micro-poudre de carbure de silicium (SiC)"},"content":{"rendered":"<p><a href=\"https:\/\/www.powdergrindingmill.com\/fr\/products\/\">Carbure de silicium<\/a> (SiC) pr\u00e9sente une duret\u00e9 \u00e9lev\u00e9e, une excellente r\u00e9sistance \u00e0 la corrosion, une r\u00e9sistance \u00e0 haute temp\u00e9rature et une r\u00e9sistance \u00e0 l'oxydation. Il est largement utilis\u00e9 dans la m\u00e9tallurgie, l'a\u00e9rospatiale, les supports catalytiques, les c\u00e9ramiques techniques, les abrasifs et la m\u00e9canique. Sa duret\u00e9 extr\u00eame joue un r\u00f4le important dans l'industrie de l'information \u00e9lectronique, comme dans la d\u00e9coupe de puces. La poudre de carbure de silicium de haute puret\u00e9, ultrafine, uniforme et sans agglom\u00e9rats, est la condition pr\u00e9alable essentielle \u00e0 la fabrication de produits SiC haute performance.<\/p>\n\n\n\n<p>Les m\u00e9thodes de pr\u00e9paration du SiC peuvent \u00eatre class\u00e9es en <strong>phase solide<\/strong>, <strong>phase liquide<\/strong>, et <strong>phase gazeuse<\/strong> routes, en fonction des \u00e9tats physiques et chimiques des mati\u00e8res premi\u00e8res.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"669\" src=\"https:\/\/www.powdergrindingmill.com\/wp-content\/uploads\/2025\/08\/Black-Silicon-carbide.webp\" alt=\"Carbure de silicium noir\" class=\"wp-image-4393\" srcset=\"https:\/\/www.powdergrindingmill.com\/wp-content\/uploads\/2025\/08\/Black-Silicon-carbide.webp 800w, https:\/\/www.powdergrindingmill.com\/wp-content\/uploads\/2025\/08\/Black-Silicon-carbide-300x251.webp 300w, https:\/\/www.powdergrindingmill.com\/wp-content\/uploads\/2025\/08\/Black-Silicon-carbide-768x642.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">M\u00e9thodes en phase solide<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">M\u00e9thode de r\u00e9duction carbothermique<\/h3>\n\n\n\n<p>La m\u00e9thode de r\u00e9duction carbothermique produit essentiellement des carbures ou des m\u00e9taux en r\u00e9duisant des oxydes m\u00e9talliques avec du carbone \u00e0 haute temp\u00e9rature. Les premiers proc\u00e9d\u00e9s m\u00e9langeaient simplement du quartz avec du noir de carbone, ce qui entra\u00eenait des temps de r\u00e9action longs et des temp\u00e9ratures de r\u00e9action excessivement \u00e9lev\u00e9es.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">M\u00e9thode de broyage m\u00e9canique<\/h3>\n\n\n\n<p>La m\u00e9thode de <a href=\"https:\/\/www.powdergrindingmill.com\/fr\/astra-portfolio\/air-classifying-production-line-of-carbon-microspheres-in-a-chemical-plant-in-hubei\/\">broyage<\/a> m\u00e9canique utilise une force m\u00e9canique pour augmenter les d\u00e9fauts internes dans les particules de poudre. Les forces externes brisent les liaisons intermol\u00e9culaires \u00e0 l'int\u00e9rieur du mat\u00e9riau, le divisant pour cr\u00e9er de nouvelles interfaces. En g\u00e9n\u00e9ral, la mati\u00e8re premi\u00e8re subit un broyage \u00e0 haute \u00e9nergie, o\u00f9 les particules plus grosses sont fractur\u00e9es en particules plus petites avec une surface sp\u00e9cifique plus \u00e9lev\u00e9e apr\u00e8s un impact. Combiner impact, extrusion, cisaillement et forces de broyage est une approche efficace pour produire <a href=\"https:\/\/www.powdergrindingmill.com\/fr\/dry-grinding\/fluidized-bed-opposed-air-jet-mill\/\">micro-poudre de carbure de silicium<\/a>.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/www.powdergrindingmill.com\/wp-content\/uploads\/2025\/08\/Jet-mill-MQW20.webp\" alt=\"Jet mill MQW20\" class=\"wp-image-4394\" srcset=\"https:\/\/www.powdergrindingmill.com\/wp-content\/uploads\/2025\/08\/Jet-mill-MQW20.webp 800w, https:\/\/www.powdergrindingmill.com\/wp-content\/uploads\/2025\/08\/Jet-mill-MQW20-300x225.webp 300w, https:\/\/www.powdergrindingmill.com\/wp-content\/uploads\/2025\/08\/Jet-mill-MQW20-768x576.webp 768w, https:\/\/www.powdergrindingmill.com\/wp-content\/uploads\/2025\/08\/Jet-mill-MQW20-400x300.webp 400w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Synth\u00e8se par auto-propagation \u00e0 haute temp\u00e9rature (SHS)<\/h3>\n\n\n\n<p>\u00c9galement appel\u00e9e synth\u00e8se par combustion, la SHS utilise la chaleur exothermique intense des r\u00e9actions chimiques entre les r\u00e9actifs pour atteindre l'auto-chauffage et l'auto-propagation, produisant le mat\u00e9riau cible. Elle offre des avantages tels que des \u00e9conomies d'\u00e9nergie, une haute efficacit\u00e9 et un faible co\u00fbt.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">M\u00e9thodes en phase liquide<\/h2>\n\n\n\n<p><strong>M\u00e9thode de pyrolyse des polym\u00e8res<\/strong><br>Cette m\u00e9thode chauffe des polym\u00e8res tels que le polysilane, lib\u00e9rant essentiellement de petits monom\u00e8res pour former une cha\u00eene de Si\u2013C. Il existe deux principales voies :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Le pr\u00e9curseur est chauff\u00e9, se d\u00e9composant pour lib\u00e9rer des monom\u00e8res, suivi par une r\u00e9duction carbothermique pour produire de la poudre de carbure de silicium.<\/li>\n\n\n\n<li>Le pr\u00e9curseur est chauff\u00e9 pour lib\u00e9rer des monom\u00e8res, qui forment d'abord la cha\u00eene Si\u2013C, puis finalement la poudre de SiC. Dans cette m\u00e9thode, la synth\u00e8se du pr\u00e9curseur est l'\u00e9tape critique.<\/li>\n<\/ul>\n\n\n\n<p><strong>M\u00e9thode Sol\u2013Gel<\/strong><br>Le proc\u00e9d\u00e9 sol\u2013gel est une voie importante pour synth\u00e9tiser des mat\u00e9riaux inorganiques \u00e0 basse ou ambiante temp\u00e9ratures. Des compos\u00e9s \u00e0 haute r\u00e9activit\u00e9 sont utilis\u00e9s comme pr\u00e9curseurs, et les mati\u00e8res premi\u00e8res sont m\u00e9lang\u00e9es uniform\u00e9ment en phase liquide. Une s\u00e9rie de r\u00e9actions chimiques produisent un syst\u00e8me de sol stable. Apr\u00e8s vieillissement, les particules de gel polym\u00e9risent progressivement en une structure tridimensionnelle. Le gel est ensuite s\u00e9ch\u00e9 et d\u00e9shydrat\u00e9 pour former des mat\u00e9riaux \u00e0 sous-nanostructure.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"800\" height=\"573\" src=\"https:\/\/www.powdergrindingmill.com\/wp-content\/uploads\/2025\/08\/Green-Silicon-carbide.webp\" alt=\"Carbure de silicium vert\" class=\"wp-image-4395\" srcset=\"https:\/\/www.powdergrindingmill.com\/wp-content\/uploads\/2025\/08\/Green-Silicon-carbide.webp 800w, https:\/\/www.powdergrindingmill.com\/wp-content\/uploads\/2025\/08\/Green-Silicon-carbide-300x215.webp 300w, https:\/\/www.powdergrindingmill.com\/wp-content\/uploads\/2025\/08\/Green-Silicon-carbide-768x550.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">M\u00e9thode en phase gazeuse<\/h2>\n\n\n\n<p><strong>D\u00e9p\u00f4t par Couches Minces par Vaporisation Chimique (CVD)<\/strong><\/p>\n\n\n\n<p>Dans la CVD, des substances gazeuses subissent des r\u00e9actions chimiques et de transport sur un substrat solide, produisant une couche de pr\u00e9cipit\u00e9 solide.<\/p>\n\n\n\n<p><strong>D\u00e9p\u00f4t par Vaporisation Plasma-Induite<\/strong><\/p>\n\n\n\n<p>Le principe de la synth\u00e8se par vaporisation plasma repose sur l'ionisation des mol\u00e9cules de gaz sous un champ \u00e9lectrique pour former un plasma. La d\u00e9charge plasma est ensuite utilis\u00e9e pour activer le gaz de r\u00e9action. Ce proc\u00e9d\u00e9 permet le d\u00e9p\u00f4t par vaporisation chimique.<\/p>\n\n\n\n<p><strong>M\u00e9thode de D\u00e9p\u00f4t par Vaporisation Chimique Induite par Laser<\/strong><\/p>\n\n\n\n<p>La m\u00e9thode de d\u00e9p\u00f4t par vaporisation chimique induite par laser est largement appliqu\u00e9e. Elle peut produire de la poudre de SiC de haute puret\u00e9.<br>Elle montre \u00e9galement un grand potentiel dans la synth\u00e8se de divers \u00e9l\u00e9ments, compos\u00e9s inorganiques et mat\u00e9riaux composites.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><a href=\"https:\/\/www.powdergrindingmill.com\/fr\/contact\/\">Poudre \u00e9pique<\/a><\/h2>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe title=\"Fabricant de broyeurs \u00e0 jet d&#039;air haute performance, Projet de broyeur ultrafin \u00e0 jet d&#039;air - Epic Powder\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/ZamYRrqtWLI?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p>Dans la production de micro-poudre de carbure de silicium de haute puret\u00e9 et ultrafine, un broyage pr\u00e9cis et une classification sont essentiels pour obtenir une taille de particule uniforme et \u00e9viter l'agglom\u00e9ration. Epic Powder fournit des syst\u00e8mes avanc\u00e9s de broyage et de classification, tels que les broyeurs \u00e0 jet, les broyeurs classificateurs \u00e0 air et les solutions de broyage m\u00e9canique, permettant un raffinage efficace des particules et une qualit\u00e9 constante. Ces technologies aident \u00e0 garantir que les poudres de SiC r\u00e9pondent aux exigences strictes des c\u00e9ramiques haute performance, de l'\u00e9lectronique et des applications d'ing\u00e9nierie avanc\u00e9e.<\/p>\n\n\n\n<div class=\"wp-block-contact-form-7-contact-form-selector\">\n<div class=\"wpcf7 no-js\" id=\"wpcf7-f8-o1\" lang=\"zh-CN\" dir=\"ltr\" data-wpcf7-id=\"8\">\n<div class=\"screen-reader-response\"><p role=\"status\" aria-live=\"polite\" aria-atomic=\"true\"><\/p> <ul><\/ul><\/div>\n<form action=\"\/fr\/wp-json\/wp\/v2\/posts\/4391#wpcf7-f8-o1\" method=\"post\" class=\"wpcf7-form init\" aria-label=\"Formulaire de message\" novalidate=\"novalidate\" data-status=\"init\" data-trp-original-action=\"\/fr\/wp-json\/wp\/v2\/posts\/4391#wpcf7-f8-o1\">\n<fieldset class=\"hidden-fields-container\"><input type=\"hidden\" name=\"_wpcf7\" value=\"8\" \/><input type=\"hidden\" name=\"_wpcf7_version\" value=\"6.1.3\" \/><input type=\"hidden\" name=\"_wpcf7_locale\" 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class=\"batton\">\n\t\t<p><input class=\"wpcf7-form-control wpcf7-submit has-spinner\" type=\"submit\" value=\"Soumettre\" \/>\n\t\t<\/p>\n\t<\/div>\n<\/div>\n<style>\n.yanzheng{color:#fff}\n.wpcf7-response-output{color:#fff}\n.keen-form div{margin-bottom:0px;}\n.keen-form div p{margin-bottom:0px !important;}\n.one-half,.one-third {\n position: relative;\n margin-right: 4%;\n float: left;\n z-index: 99;\n}\n.one-half { width: 48%; }\n.one-third { width: 30.66%; }\n.last {\n margin-right: 0 !important;\n clear: right;\n}\n.batton { margin-top:2%\n}\n@media only screen and (max-width: 767px) {\n .one-half, .one-third {\n width: 100%;\n margin-right: 0;\n }\n}\n<\/style><div class=\"wpcf7-response-output\" aria-hidden=\"true\"><\/div>\n<input type=\"hidden\" name=\"trp-form-language\" value=\"fr\"\/><\/form>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Silicon carbide (SiC) features high hardness, excellent corrosion resistance, high-temperature resistance, and oxidation resistance. It is widely used in metallurgy, aerospace, catalyst carriers, engineering ceramics, [&hellip;]<\/p>","protected":false},"author":1,"featured_media":4396,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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