Rekrystalizovan\u00fd karbid k\u0159em\u00edku (RSiC) je v\u00fdjime\u010dn\u00fd materi\u00e1l s bezkonkuren\u010dn\u00edmi mechanick\u00fdmi a tepeln\u00fdmi vlastnostmi, kter\u00fd se m\u016f\u017ee pochlubit vynikaj\u00edc\u00edmi mechanick\u00fdmi a tepeln\u00fdmi vlastnostmi a tak\u00e9 zdokonalenou mikrostrukturou, kter\u00e1 tyto vlastnosti je\u0161t\u011b zvy\u0161uje.<\/p>\n
RSIC se vyzna\u010duje vysokou tepelnou vodivost\u00ed, vynikaj\u00edc\u00ed odolnost\u00ed proti korozi a lze jej tvarovat do slo\u017eit\u00fdch tvar\u016f, ani\u017e by do\u0161lo k prask\u00e1n\u00ed nebo odlamov\u00e1n\u00ed. Krom\u011b toho jeho vlastnosti umo\u017e\u0148uj\u00ed odol\u00e1vat p\u016fsoben\u00ed strusky a plamenn\u00e9 erozi, co\u017e zvy\u0161uje jeho odolnost.<\/p>\n
Rekrystalizovan\u00fd karbid k\u0159em\u00edku nab\u00edz\u00ed vynikaj\u00edc\u00ed rozm\u011brovou stabilitu p\u0159i vysok\u00fdch teplot\u00e1ch a extr\u00e9mn\u00ed odolnost v n\u00e1ro\u010dn\u00fdch provozn\u00edch prost\u0159ed\u00edch, na rozd\u00edl od podp\u016frn\u00fdch materi\u00e1l\u016f korditu a mullitu, kter\u00e9 pod tlakem degraduj\u00ed, jako nap\u0159. kordit nebo mullit. D\u00edky t\u00e9to pevnosti a odolnosti je rekrystalizovan\u00fd karbid k\u0159em\u00edku vynikaj\u00edc\u00ed volbou materi\u00e1lu pro aplikace, jako je n\u00e1bytek do pec\u00ed, kter\u00e9 vy\u017eaduj\u00ed, aby vydr\u017eel neust\u00e1l\u00e9 pou\u017e\u00edv\u00e1n\u00ed v extr\u00e9mn\u00edch podm\u00ednk\u00e1ch.<\/p>\n
Keramika z karbidu k\u0159em\u00edku se vyr\u00e1b\u00ed v r\u016fzn\u00fdch polymorfn\u00edch form\u00e1ch, p\u0159i\u010dem\u017e nejobl\u00edben\u011bj\u0161\u00ed je alfa SiC (a-SiC) s wurtzitovou krystalovou strukturou podobnou diamantu. Zin blende SiC, zn\u00e1m\u00fd tak\u00e9 jako beta SiC, je mnohem m\u00e9n\u011b roz\u0161\u00ed\u0159en\u00fd; p\u0159esto si z\u00edskal rostouc\u00ed z\u00e1jem jako aplika\u010dn\u00ed podpora d\u00edky sv\u00e9mu v\u011bt\u0161\u00edmu povrchu a lep\u0161\u00edm mechanick\u00fdm vlastnostem ve srovn\u00e1n\u00ed s polymorfem alfa SiC.<\/p>\n
Polymorf a-SiC se \u010dasto pou\u017e\u00edv\u00e1 v hlinitokovov\u00e9 \u017e\u00e1ruvzdorn\u00e9 keramice a ve vysokoteplotn\u00edch aplikac\u00edch jako elektrodov\u00fd materi\u00e1l d\u00edky sv\u00e9 extr\u00e9mn\u011b vysok\u00e9 tepeln\u00e9 vodivosti, vynikaj\u00edc\u00ed oxida\u010dn\u00ed odolnosti a dobr\u00e9 odolnosti proti ot\u011bru. Krom\u011b toho se b-SiC \u010dasto pou\u017e\u00edv\u00e1 jako elektrodov\u00fd materi\u00e1l v keramick\u00fdch pec\u00edch, keramick\u00fdch izol\u00e1torech a p\u0159i v\u00fdrob\u011b skla.<\/p>\n
\u017d\u00e1ruvzdorn\u00e9 materi\u00e1ly z karbidu k\u0159em\u00edku s nitridovou vazbou se vytv\u00e1\u0159ej\u00ed inovativn\u00edm postupem. Tyto \u017e\u00e1ruvzdorn\u00e9 materi\u00e1ly, kter\u00e9 za\u010d\u00ednaj\u00ed pr\u00e1\u0161kov\u00fdm karbidem k\u0159em\u00edku, jsou tvarov\u00e1ny do slo\u017eit\u00fdch tvar\u016f pomoc\u00ed speci\u00e1ln\u00edch n\u00e1stroj\u016f a pot\u00e9 jsou slinov\u00e1ny p\u0159i teplot\u00e1ch dosahuj\u00edc\u00edch 2500 stup\u0148\u016f C pro pou\u017eit\u00ed ve slinut\u00e9m stavu. Jejich tepeln\u00e1 vodivost je desetkr\u00e1t vy\u0161\u0161\u00ed ne\u017e u \u0161amotov\u00fdch \u017e\u00e1ruvzdorn\u00fdch materi\u00e1l\u016f a z\u00e1rove\u0148 nab\u00edzej\u00ed vynikaj\u00edc\u00ed odolnost proti korozi a oxidaci, vysokou pevnost za tepla s velmi malou absorpc\u00ed vody - ide\u00e1ln\u00ed pro aplikace, jako je nap\u0159\u00edklad napaden\u00ed struskou a aplikace s plamennou eroz\u00ed.<\/p>\n
Rekrystalizovan\u00fd karbid k\u0159em\u00edku m\u00e1 nejen vynikaj\u00edc\u00ed mechanick\u00e9 vlastnosti, ale je tak\u00e9 mimo\u0159\u00e1dn\u011b odoln\u00fd proti korozi - co\u017e je neoceniteln\u00e1 vlastnost u v\u0161ech materi\u00e1l\u016f, kter\u00e9 p\u0159ich\u00e1zej\u00ed do styku s drsn\u00fdm prost\u0159ed\u00edm, jako jsou vysokoteplotn\u00ed pece a tav\u00edrny kov\u016f. Rekrystalizovan\u00fd karbid k\u0159em\u00edku je nav\u00edc dobrou volbou materi\u00e1lu pro sou\u010d\u00e1sti vystaven\u00e9 p\u016fsoben\u00ed chemik\u00e1li\u00ed, kter\u00e9 mohou \u010dasem korodovat.<\/p>\n
Pro zv\u00fd\u0161en\u00ed korozn\u00ed odolnosti RSiC lze pou\u017e\u00edt r\u016fzn\u00e9 kyseliny. Zejm\u00e9na kyselina fluorovod\u00edkov\u00e1 pronik\u00e1 hluboko do otev\u0159en\u00fdch p\u00f3r\u016f RSiC a lept\u00e1 jejich vnit\u0159n\u00ed povrch st\u011bn a sou\u010dasn\u011b sni\u017euje n\u00edzkoodporov\u00e9 vrstven\u00ed uhl\u00edku na jejich vnit\u0159n\u00edm povrchu.<\/p>\n
Zvy\u0161te korozn\u00ed odolnost materi\u00e1lu RSiC pou\u017eit\u00edm nitrida\u010dn\u00ed \u00fapravy, kter\u00e1 m\u011bn\u00ed kovov\u00fd k\u0159em\u00edk na nitrid k\u0159em\u00edku a spojuje zrna dohromady. Nitridaci lze prov\u00e1d\u011bt bu\u010f po sp\u00e9k\u00e1n\u00ed, nebo p\u0159ed n\u00edm.<\/p>\n
Vzhledem k tomu, \u017ee se nitridov\u011b v\u00e1zan\u00fd RSiC b\u011bhem sp\u00e9k\u00e1n\u00ed nesmr\u0161\u0165uje, je m\u00e9n\u011b pravd\u011bpodobn\u00e9, \u017ee p\u0159i tvarov\u00e1n\u00ed do tvaru dojde k vnit\u0159n\u00edmu pnut\u00ed a prasknut\u00ed nebo ohnut\u00ed. Proto lze tento materi\u00e1l vyu\u017e\u00edt v rozmanit\u011bj\u0161\u00edch aplikac\u00edch ne\u017e jin\u00e9 por\u00e9zn\u00ed materi\u00e1ly z karbidu k\u0159em\u00edku, v\u010detn\u011b automobilov\u00fdch d\u00edl\u016f, kter\u00e9 odol\u00e1vaj\u00ed opot\u0159eben\u00ed, leteck\u00fdch sou\u010d\u00e1st\u00ed, vojensk\u00fdch aplikac\u00ed a mnoha dal\u0161\u00edch.<\/p>\n
Karbid k\u0159em\u00edku (SiC) je anorganick\u00e1 chemick\u00e1 slou\u010denina slo\u017een\u00e1 z k\u0159em\u00edku a uhl\u00edku. V p\u0159\u00edrod\u011b se vyskytuje jako vz\u00e1cn\u00fd miner\u00e1l moissanit, ale jeho masov\u00e1 v\u00fdroba za\u010dala v roce 1893 s pou\u017eit\u00edm pr\u00e1\u0161ku a krystal\u016f jako brusiva. Sp\u00e9k\u00e1n\u00ed tak\u00e9 spojuje SiC do keramick\u00fdch materi\u00e1l\u016f s vynikaj\u00edc\u00ed pevnost\u00ed a odolnost\u00ed, kter\u00e9 lze nal\u00e9zt v nepr\u016fst\u0159eln\u00fdch vest\u00e1ch.<\/p>\n
Rekrystalizovan\u00fd karbid k\u0159em\u00edku (RSiC) je varianta SiC, kter\u00e1 se d\u00edky sv\u00e9 jedine\u010dn\u00e9 mikrostruktu\u0159e vyzna\u010duje vynikaj\u00edc\u00edmi celkov\u00fdmi vlastnostmi. RSiC se skl\u00e1d\u00e1 ze vz\u00e1jemn\u011b propojen\u00fdch zrn podobn\u00fdch desk\u00e1m, kter\u00e1 prob\u00edhaj\u00ed rovnob\u011b\u017en\u011b s jeho povrchem, a nab\u00edz\u00ed tak vynikaj\u00edc\u00ed pevnost, hou\u017eevnatost, odolnost proti opot\u0159eben\u00ed, vysokou rozm\u011brovou stabilitu a n\u00edzkou tepelnou rozta\u017enost - ide\u00e1ln\u00ed pro vysokoteplotn\u00ed aplikace.<\/p>\n
RSiC lze vyr\u00e1b\u011bt r\u016fzn\u00fdmi postupy, nap\u0159\u00edklad odl\u00e9v\u00e1n\u00edm, vytla\u010dov\u00e1n\u00edm a vst\u0159ikov\u00e1n\u00edm. Po vytvarov\u00e1n\u00ed do kone\u010dn\u00e9ho tvaru se sp\u00e9k\u00e1 p\u0159i vysok\u00fdch teplot\u00e1ch, \u010d\u00edm\u017e doch\u00e1z\u00ed k rekrystalizaci a vytvo\u0159en\u00ed charakteristick\u00e9 mikrostruktury - t\u00edm se tak\u00e9 odstran\u00ed materi\u00e1l pojiva a z\u016fstane \u010dist\u00fd RSiC.<\/p>\n
Rekrystalizovan\u00fd karbid k\u0159em\u00edku (RSiC) lze vyr\u00e1b\u011bt v pr\u016fmyslov\u00e9m m\u011b\u0159\u00edtku pro mnoho r\u016fzn\u00fdch aplikac\u00ed, od v\u00fdroby n\u00e1bytku do pec\u00ed a komponent\u016f pro opot\u0159eben\u00ed s vynikaj\u00edc\u00ed odolnost\u00ed proti korozi a oxidaci a\u017e po komponenty palivov\u00fdch \u010dl\u00e1nk\u016f a filtry pevn\u00fdch \u010d\u00e1stic d\u00edky jeho vysok\u00e9 tepeln\u00e9 vodivosti a n\u00edzk\u00e9 smr\u0161\u0165ovac\u00ed schopnosti. Rekrystalizovan\u00fd SiC je ide\u00e1ln\u00ed pro velkov\u00fdrobu d\u00edky sv\u00fdm obrovsk\u00fdm v\u00fdrobn\u00edm kapacit\u00e1m a r\u016fznorod\u00e9mu vyu\u017eit\u00ed; nap\u0159\u00edklad odolnosti proti opot\u0159eben\u00ed. Rekrystalizovan\u00fd SiC je \u010dasto up\u0159ednost\u0148ov\u00e1n p\u0159ed reak\u010dn\u011b v\u00e1zan\u00fdm RSiC pro aplikace zahrnuj\u00edc\u00ed korozi nebo vysokoteplotn\u00ed prost\u0159ed\u00ed, jako je v\u00fdroba opot\u0159ebiteln\u00fdch sou\u010d\u00e1st\u00ed pro v\u00fdrobu n\u00e1bytku do pec\u00ed d\u00edky sv\u00e9 odolnosti v\u016f\u010di korozi; jako jsou opot\u0159ebiteln\u00e9 sou\u010d\u00e1sti pou\u017e\u00edvan\u00e9 pro v\u00fdrobu opot\u0159ebiteln\u00fdch sou\u010d\u00e1st\u00ed v pr\u016fmyslov\u00e9m prost\u0159ed\u00ed d\u00edky sv\u00fdm odoln\u00fdm vlastnostem v\u016f\u010di korozi, oxidaci a vysok\u00fdm teplot\u00e1m, jako\u017e i sou\u010d\u00e1sti palivov\u00fdch \u010dl\u00e1nk\u016f a filtry pevn\u00fdch \u010d\u00e1stic d\u00edky sv\u00fdm tepeln\u011b vodiv\u00fdm vlastnostem a n\u00edzk\u00e9mu potenci\u00e1lu smr\u0161\u0165ov\u00e1n\u00ed ve srovn\u00e1n\u00ed s reak\u010dn\u011b v\u00e1zan\u00fdm RSiC, kter\u00fd vy\u017eaduje zvl\u00e1\u0161tn\u00ed p\u00e9\u010di p\u0159i v\u00fdrob\u011b.<\/p>\n
RSiC lze d\u00edky jeho vynikaj\u00edc\u00edm mechanick\u00fdm, tepeln\u00fdm a elektrick\u00fdm vlastnostem vyu\u017e\u00edt v r\u016fzn\u00fdch aplikac\u00edch. D\u00edky vynikaj\u00edc\u00ed odolnosti proti korozi a vy\u0161\u0161\u00ed pevnosti ne\u017e jin\u00e9 por\u00e9zn\u00ed keramick\u00e9 materi\u00e1ly odol\u00e1v\u00e1 vysok\u00fdm nam\u00e1h\u00e1n\u00edm a teplot\u00e1m, zat\u00edmco jeho n\u00edzk\u00fd koeficient rozta\u017enosti zaji\u0161\u0165uje, \u017ee si zachov\u00e1v\u00e1 sv\u016fj tvar, ani\u017e by se p\u0159i tepeln\u00e9m nam\u00e1h\u00e1n\u00ed deformoval nebo kroutila.<\/p>\n
K v\u00fdrob\u011b slo\u017eit\u00fdch tvar\u016f lze pou\u017e\u00edt kluzn\u00e9 lit\u00ed, vytla\u010dov\u00e1n\u00ed a vst\u0159ikov\u00e1n\u00ed, co\u017e zvy\u0161uje u\u017eivatelskou p\u0159\u00edv\u011btivost RSiC v \u0161irok\u00e9 \u0161k\u00e1le aplikac\u00ed. D\u00edky sv\u00e9 vynikaj\u00edc\u00ed pevnosti p\u0159i vysok\u00fdch teplot\u00e1ch a vlastnostem odolnosti proti oxidaci se RSiC \u010dasto vol\u00ed pro v\u00fdrobu n\u00e1bytku do pec\u00ed pro svou v\u00fdjime\u010dnou pevnost p\u0159i vysok\u00fdch teplot\u00e1ch a odolnost proti opot\u0159eben\u00ed; nav\u00edc m\u00e1 vynikaj\u00edc\u00ed odolnost proti opot\u0159eben\u00ed, tak\u017ee se m\u016f\u017ee pou\u017e\u00edvat p\u0159i v\u00fdrob\u011b brusn\u00fdch materi\u00e1l\u016f, brusn\u00fdch n\u00e1stroj\u016f, \u0159ezn\u00fdch n\u00e1stroj\u016f a dal\u0161\u00edch pr\u016fmyslov\u00fdch za\u0159\u00edzen\u00ed.<\/p>\n
Krom\u011b toho lze RSiC pou\u017e\u00edt k v\u00fdrob\u011b ochrann\u00fdch panc\u00e9\u0159ov\u00fdch desek pro vojensk\u00e9 vybaven\u00ed a vozidla. D\u00edky sv\u00fdm vynikaj\u00edc\u00edm mechanick\u00fdm vlastnostem m\u016f\u017ee tento inovativn\u00ed materi\u00e1l pomoci zlep\u0161it v\u00fdkon a \u017eivotnost, zat\u00edmco jeho odolnost proti korozi sni\u017euje rizika p\u0159i nasazen\u00ed a p\u0159eprav\u011b; RSiC je tak vynikaj\u00edc\u00ed volbou pro mnoho pou\u017eit\u00ed ve vojensk\u00e9m i leteck\u00e9m pr\u016fmyslu.<\/p>","protected":false},"excerpt":{"rendered":"
Recrystallized silicon carbide (RSiC) is an exceptional material with unparalleled mechanical and thermal properties, boasting outstanding mechanical and thermal characteristics as well as possessing an enhanced microstructure which enhances these attributes even further. RSIC boasts high thermal conductivity, excellent corrosion resistance, and can be formed into complex shapes without cracking or chipping. Furthermore, its properties […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","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":[64],"tags":[],"class_list":["post-102","post","type-post","status-publish","format-standard","hentry","category-knowledge"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/posts\/102","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/comments?post=102"}],"version-history":[{"count":1,"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/posts\/102\/revisions"}],"predecessor-version":[{"id":103,"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/posts\/102\/revisions\/103"}],"wp:attachment":[{"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/media?parent=102"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/categories?post=102"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/tags?post=102"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}