{"id":552,"date":"2022-12-20T22:15:37","date_gmt":"2022-12-20T14:15:37","guid":{"rendered":"https:\/\/siliconcarbide.net\/?p=552"},"modified":"2022-12-20T22:36:50","modified_gmt":"2022-12-20T14:36:50","slug":"technologie-slinuteho-karbidu-kremiku","status":"publish","type":"post","link":"https:\/\/siliconcarbide.net\/cs\/technology-of-sintered-silicon-carbide\/","title":{"rendered":"technologie slinut\u00e9ho karbidu k\u0159em\u00edku"},"content":{"rendered":"

Keramika z karbidu k\u0159em\u00edku se st\u00e1le v\u00edce pou\u017e\u00edv\u00e1 d\u00edky sv\u00e9 vynikaj\u00edc\u00ed pevnosti p\u0159i vysok\u00fdch teplot\u00e1ch, odolnosti proti opot\u0159eben\u00ed, odolnosti proti korozi a tepeln\u00fdm \u0161ok\u016fm. Keramika SiC hraje st\u00e1le d\u016fle\u017eit\u011bj\u0161\u00ed roli v oblasti materi\u00e1l\u016f. Proto je nal\u00e9hav\u011b nutn\u00e9 prov\u00e1d\u011bt dal\u0161\u00ed v\u00fdzkum materi\u00e1l\u016f SiC s c\u00edlem sn\u00ed\u017eit v\u00fdrobn\u00ed n\u00e1klady, zjednodu\u0161it v\u00fdrobn\u00ed procesy a podpo\u0159it v\u00fdvoj v\u00fdrobk\u016f z keramiky SiC p\u0159i neust\u00e1l\u00e9m zlep\u0161ov\u00e1n\u00ed jejich vynikaj\u00edc\u00edch vlastnost\u00ed.<\/p>\n

Sp\u00e9k\u00e1n\u00ed karbidu k\u0159em\u00edku je pova\u017eov\u00e1no za nejslibn\u011bj\u0161\u00ed metodu sp\u00e9k\u00e1n\u00ed SiC. atmosf\u00e9rick\u00fdm sp\u00e9k\u00e1n\u00edm lze p\u0159ipravit keramiku z karbidu k\u0159em\u00edku s velk\u00fdmi rozm\u011bry a slo\u017eit\u00fdm tvarem. Spole\u010dnost GE Corporation ze Spojen\u00fdch st\u00e1t\u016f p\u0159ijala n\u00e1sleduj\u00edc\u00ed opat\u0159en\u00ed: \u03b2 - p\u0159id\u00e1n\u00ed boru a uhl\u00edku do SiC, sp\u00e9k\u00e1n\u00ed p\u0159i teplot\u011b nad 2 000 \u2103 v inertn\u00ed atmosf\u00e9\u0159e a z\u00edsk\u00e1n\u00ed slinut\u00e9ho karbidu k\u0159em\u00edku s hustotou vy\u0161\u0161\u00ed ne\u017e 98% p\u0159i teplot\u011b 2020 \u2103. S Y2O3 a Al2O3 jako pomocn\u00fdmi l\u00e1tkami p\u0159i sp\u00e9k\u00e1n\u00ed a YAG (Y3Al5O12) s n\u00edzkou teplotou t\u00e1n\u00ed jako z\u00e1kladn\u00ed slo\u017ekou vyp\u00e1lil \u0160anghajsk\u00fd institut silik\u00e1t\u016f \u010c\u00ednsk\u00e9 akademie v\u011bd keramiku z karbidu k\u0159em\u00edku s pevnost\u00ed v ohybu 707 a lomovou hou\u017eevnatost\u00ed 10,7 p\u0159i 1850 \u2103. Liu Baoying ze \u0160an-tungsk\u00e9ho institutu pro v\u00fdzkum a navrhov\u00e1n\u00ed silik\u00e1t\u016f p\u0159idal vhodn\u00e9 mno\u017estv\u00ed Al2O3 a Y2O3 jako sp\u00e9kac\u00ed p\u0159\u00edsady a vyrobil jemn\u00e9 kompozitn\u00ed keramick\u00e9 materi\u00e1ly SiC s relativn\u00ed hustotou 97% p\u0159i 1780 \u2103 pomoc\u00ed procesu injekt\u00e1\u017en\u00edho tvarov\u00e1n\u00ed, kter\u00e9 mohou splnit pot\u0159eby pr\u016fmyslov\u00e9 v\u00fdroby mechanick\u00fdch t\u011bsn\u011bn\u00ed a keramiky odoln\u00e9 proti opot\u0159eben\u00ed. Dosavadn\u00ed v\u00fdzkum slinut\u00e9ho karbidu k\u0159em\u00edku v\u0161ak nen\u00ed p\u0159\u00edli\u0161 d\u016fkladn\u00fd, co\u017e je t\u0159eba d\u00e1le prohloubit.<\/p>\n

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

Keramika z karbidu k\u0159em\u00edku se d\u00edky sv\u00e9 vynikaj\u00edc\u00ed pevnosti p\u0159i vysok\u00fdch teplot\u00e1ch, odolnosti proti opot\u0159eben\u00ed, korozi a tepeln\u00fdm \u0161ok\u016fm pou\u017e\u00edv\u00e1 st\u00e1le \u010dast\u011bji. Keramika SiC hraje v oblasti materi\u00e1l\u016f st\u00e1le d\u016fle\u017eit\u011bj\u0161\u00ed roli. Je proto nal\u00e9hav\u011b nutn\u00e9 prov\u00e1d\u011bt dal\u0161\u00ed v\u00fdzkum materi\u00e1l\u016f SiC s c\u00edlem sn\u00ed\u017eit v\u00fdrobn\u00ed n\u00e1klady, zjednodu\u0161it\u2026 <\/p>","protected":false},"author":1,"featured_media":555,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","ngg_post_thumbnail":0,"footnotes":""},"categories":[30],"tags":[],"class_list":["post-552","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sic-knowledge"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/siliconcarbide.net\/cs\/wp-json\/wp\/v2\/posts\/552","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/siliconcarbide.net\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/siliconcarbide.net\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/siliconcarbide.net\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/siliconcarbide.net\/cs\/wp-json\/wp\/v2\/comments?post=552"}],"version-history":[{"count":3,"href":"https:\/\/siliconcarbide.net\/cs\/wp-json\/wp\/v2\/posts\/552\/revisions"}],"predecessor-version":[{"id":556,"href":"https:\/\/siliconcarbide.net\/cs\/wp-json\/wp\/v2\/posts\/552\/revisions\/556"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/siliconcarbide.net\/cs\/wp-json\/wp\/v2\/media\/555"}],"wp:attachment":[{"href":"https:\/\/siliconcarbide.net\/cs\/wp-json\/wp\/v2\/media?parent=552"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/siliconcarbide.net\/cs\/wp-json\/wp\/v2\/categories?post=552"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/siliconcarbide.net\/cs\/wp-json\/wp\/v2\/tags?post=552"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}