{"id":12,"date":"2022-12-21T20:54:38","date_gmt":"2022-12-21T12:54:38","guid":{"rendered":"http:\/\/siliconcarbideceramic.net\/?p=12"},"modified":"2022-12-21T21:03:46","modified_gmt":"2022-12-21T13:03:46","slug":"ruzne-druhy-keramiky-z-karbidu-kremiku","status":"publish","type":"post","link":"https:\/\/siliconcarbideceramic.net\/cs\/different-kind-silicon-carbide-ceramic\/","title":{"rendered":"r\u016fzn\u00e9 druhy keramiky z karbidu k\u0159em\u00edku"},"content":{"rendered":"

Proces p\u0159\u00edpravy reak\u010dn\u011b v\u00e1zan\u00e9ho karbidu k\u0159em\u00edku je pom\u011brn\u011b jednoduch\u00fd. tento druh karbidov\u00e9 keramiky vyu\u017e\u00edv\u00e1 p\u0159\u00edmo karbid k\u0159em\u00edku s ur\u010ditou distribuc\u00ed velikosti \u010d\u00e1stic, po sm\u00edch\u00e1n\u00ed s uhl\u00edkem vytv\u00e1\u0159\u00ed z\u00e1rodky a pot\u00e9 se za vysok\u00e9 teploty nauhli\u010duje. \u010c\u00e1st k\u0159em\u00edku reaguje s uhl\u00edkem za vzniku SiC, kter\u00fd se spoj\u00ed s SIC v p\u016fvodn\u00edm z\u00e1rodku, aby se dos\u00e1hlo \u00fa\u010delu slinov\u00e1n\u00ed. Existuj\u00ed dv\u011b metody nauhli\u010dov\u00e1n\u00ed: jedna spo\u010d\u00edv\u00e1 v dosa\u017een\u00ed teploty t\u00e1n\u00ed k\u0159em\u00edku, generov\u00e1n\u00ed teploty t\u00e1n\u00ed k\u0159em\u00edku a generov\u00e1n\u00ed k\u0159em\u00edkov\u00e9 p\u00e1ry, \u00da\u010delu slinov\u00e1n\u00ed se dos\u00e1hne infiltrac\u00ed k\u0159em\u00edkov\u00e9 p\u00e1ry do z\u00e1rodku. V\u00fdrobn\u00ed n\u00e1klady na slinut\u00e9 t\u011bleso SiC p\u0159ipraven\u00e9 t\u00edmto postupem jsou n\u00edzk\u00e9. Tento proces v\u0161ak ur\u010duje zbytkov\u00fd voln\u00fd k\u0159em\u00edk ve sp\u00e9kan\u00e9m z\u00e1rodku. Tato \u010d\u00e1st k\u0159em\u00edku by m\u011bla m\u00edt vliv na pou\u017eit\u00ed budouc\u00edch v\u00fdrobk\u016f. Na jedn\u00e9 stran\u011b sni\u017euje pevnost a odolnost proti opot\u0159eben\u00ed slinut\u00e9ho t\u011blesa a na druh\u00e9 stran\u011b existence voln\u00e9ho k\u0159em\u00edku zp\u016fsobuje, \u017ee karbid k\u0159em\u00edku je odoln\u00fd proti kyselin\u00e1m.<\/p>\n

Beztlakov\u00e9 slinov\u00e1n\u00ed keramiky z karbidu k\u0159em\u00edku: beztlakov\u00e9 slinov\u00e1n\u00ed karbidu k\u0159em\u00edku lze rozd\u011blit na slinov\u00e1n\u00ed v pevn\u00e9 f\u00e1zi a slinov\u00e1n\u00ed v kapaln\u00e9 f\u00e1zi. \u010cistota beztlakov\u00e9ho slinov\u00e1n\u00ed karbidu k\u0159em\u00edku je vysok\u00e1, obsah karbidu k\u0159em\u00edku je vy\u0161\u0161\u00ed ne\u017e 97%, odolnost proti korozi kyselinami a z\u00e1sadami je mnohem lep\u0161\u00ed ne\u017e u reak\u010dn\u00edho slinov\u00e1n\u00ed karbidu k\u0159em\u00edku a je snadn\u00e9 dos\u00e1hnout s\u00e9riov\u00e9 v\u00fdroby.<\/p>\n

Sp\u00e9k\u00e1n\u00ed keramiky z karbidu k\u0159em\u00edku lisov\u00e1n\u00edm za tepla je jedn\u00edm z nej\u00fa\u010dinn\u011bj\u0161\u00edch zp\u016fsob\u016f p\u0159\u00edpravy keramiky z karbidu k\u0159em\u00edku s vysokou hustotou. Vlastnosti karbidu k\u0159em\u00edku lisovan\u00e9ho za tepla jsou obecn\u011b vy\u0161\u0161\u00ed ne\u017e vlastnosti reak\u010dn\u011b slinut\u00e9ho a beztlak\u00e9ho slinut\u00e9ho karbidu k\u0159em\u00edku, zejm\u00e9na jeho jemn\u00e1 zrna, vysok\u00e1 kompaktnost a vysok\u00e1 pevnost a tvrdost v\u00fdrobk\u016f.<\/p>\n

Vysokoteplotn\u00ed izostatick\u00e9 lisov\u00e1n\u00ed za tepla p\u0159i sp\u00e9k\u00e1n\u00ed keramiky z karbidu k\u0159em\u00edku: Vysokoteplotn\u00ed izostatick\u00e9 lisov\u00e1n\u00ed za tepla je pokro\u010dil\u00fd proces sp\u00e9k\u00e1n\u00ed keramiky. Keramick\u00fd pr\u00e1\u0161ek nebo keramick\u00fd z\u00e1rodek se zabal\u00ed a vlo\u017e\u00ed do vysokoteplotn\u00edho hork\u00e9ho izostatick\u00e9ho lisovac\u00edho za\u0159\u00edzen\u00ed a pot\u00e9 se za vysok\u00e9 teploty a vysok\u00e9ho tlaku slinuje do hust\u00e9ho t\u011blesa. Vyzna\u010duje se sou\u010dasn\u00fdm a rovnom\u011brn\u00fdm stla\u010den\u00edm, ozna\u010dovan\u00fdm jako HIP.<\/p>\n

Rekrystalizovan\u00e1 keramika z karbidu k\u0159em\u00edku: po sm\u00edch\u00e1n\u00ed, tvarov\u00e1n\u00ed a vysu\u0161en\u00ed se suroviny vyp\u00e1l\u00ed ve vzduchem izolovan\u00e9 vysokoteplotn\u00ed elektrick\u00e9 peci p\u0159i teplot\u011b 2300 ~ 2500 \u2103. Kdy\u017e teplota p\u0159ekro\u010d\u00ed 2100 \u2103, karbid k\u0159em\u00edku se odpa\u0159\u00ed a zkondenzuje, co\u017e vede ke vzniku rekrystalizovan\u00e9 keramiky z karbidu k\u0159em\u00edku bez sp\u00e9kac\u00edho smr\u0161t\u011bn\u00ed a samovazn\u00e9 struktury.<\/p>\n

\"keramick\u00fd<\/p>","protected":false},"excerpt":{"rendered":"

The preparation process of reaction bonded silicon carbide is relatively simple. this kind silicon carbide ceramic directly uses silicon carbide […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","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":"default","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 center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"footnotes":""},"categories":[3],"tags":[],"class_list":["post-12","post","type-post","status-publish","format-standard","hentry","category-sic-knowledge"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/siliconcarbideceramic.net\/cs\/wp-json\/wp\/v2\/posts\/12","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/siliconcarbideceramic.net\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/siliconcarbideceramic.net\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/siliconcarbideceramic.net\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/siliconcarbideceramic.net\/cs\/wp-json\/wp\/v2\/comments?post=12"}],"version-history":[{"count":4,"href":"https:\/\/siliconcarbideceramic.net\/cs\/wp-json\/wp\/v2\/posts\/12\/revisions"}],"predecessor-version":[{"id":18,"href":"https:\/\/siliconcarbideceramic.net\/cs\/wp-json\/wp\/v2\/posts\/12\/revisions\/18"}],"wp:attachment":[{"href":"https:\/\/siliconcarbideceramic.net\/cs\/wp-json\/wp\/v2\/media?parent=12"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/siliconcarbideceramic.net\/cs\/wp-json\/wp\/v2\/categories?post=12"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/siliconcarbideceramic.net\/cs\/wp-json\/wp\/v2\/tags?post=12"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}