Karbid k\u0159em\u00edku v pr\u00e1\u0161ku se \u0161iroce pou\u017e\u00edv\u00e1 jako brusn\u00fd materi\u00e1l v aplikac\u00edch pro honov\u00e1n\u00ed, lapov\u00e1n\u00ed a le\u0161t\u011bn\u00ed kovov\u00fdch a keramick\u00fdch sou\u010d\u00e1st\u00ed. Krom\u011b toho se tento pr\u00e1\u0161ek m\u016f\u017ee pochlubit n\u011bkolika pr\u016fmyslov\u00fdmi aplikacemi d\u00edky sv\u00e9 pevnosti, tepeln\u00e9 vodivosti a odolnosti proti korozi.<\/p>\n
Karbid k\u0159em\u00edku lze vytvo\u0159it dv\u011bma procesy - reak\u010dn\u00ed vazbou a slinov\u00e1n\u00edm. Ka\u017ed\u00e1 z t\u011bchto metod v\u00fdznamn\u011b ovliv\u0148uje kone\u010dnou mikrostrukturu materi\u00e1lu.<\/p>\n
Karbid k\u0159em\u00edku (SiC) je jednou z nejtvrd\u0161\u00edch l\u00e1tek, kter\u00e9 se v p\u0159\u00edrod\u011b vyskytuj\u00ed, hned po diamantu a karbidu boru. D\u00edky sv\u00e9 tvrdosti nab\u00edz\u00ed SiC vynikaj\u00edc\u00ed odolnost proti opot\u0159eben\u00ed a ot\u011bru i proti korozi, tak\u017ee se ide\u00e1ln\u011b hod\u00ed pro pr\u016fmyslov\u00e9 aplikace, kter\u00e9 zahrnuj\u00ed prost\u0159ed\u00ed s vysokou teplotou a nap\u011bt\u00edm.<\/p>\n
SiC je neoxidov\u00fd keramick\u00fd materi\u00e1l s v\u00fdjime\u010dn\u00fdmi mechanick\u00fdmi vlastnostmi, v\u010detn\u011b velmi vysok\u00e9 pevnosti v ohybu p\u0159i pokojov\u00e9 teplot\u011b, vynikaj\u00edc\u00ed odolnosti proti oxidaci, n\u00edzk\u00e9ho koeficientu t\u0159en\u00ed a odolnosti proti kyselin\u00e1m a alkalick\u00fdm rozpou\u0161t\u011bdl\u016fm - vlastnosti, kter\u00e9 jej \u010din\u00ed vhodn\u00fdm pro aplikace, jako je letectv\u00ed, stroj\u00edrenstv\u00ed a elektronika.<\/p>\n
Premasol nab\u00edz\u00ed SiC v r\u016fzn\u00fdch mikronov\u00fdch velikostech s nosi\u010di na olejov\u00e9 i vodn\u00ed b\u00e1zi, aby vyhov\u011bl va\u0161im pot\u0159eb\u00e1m. SiC se vyr\u00e1b\u00ed zah\u0159\u00edv\u00e1n\u00edm k\u0159emi\u010dit\u00e9ho p\u00edsku s uhl\u00edkem p\u0159i velmi vysok\u00fdch teplot\u00e1ch za vzniku krystal\u016f karbidu k\u0159em\u00edku; zelen\u00e1 barva je obvykle spojena s vy\u0161\u0161\u00edmi \u00farovn\u011bmi \u010distoty, zat\u00edmco \u010dern\u00e1 barva ozna\u010duje \u00farove\u0148 ne\u010distot, tak\u017ee je tento materi\u00e1l vhodn\u00fd pro mnoho n\u00e1ro\u010dn\u00fdch aplikac\u00ed.<\/p>\n
Karbid k\u0159em\u00edku je extr\u00e9mn\u011b tvrd\u00fd a hou\u017eevnat\u00fd materi\u00e1l, kter\u00fd je schopen odol\u00e1vat velk\u00e9mu zat\u00ed\u017een\u00ed a n\u00e1raz\u016fm a z\u00e1rove\u0148 z\u016fst\u00e1v\u00e1 vysoce odoln\u00fd proti ot\u011bru a erozi - ide\u00e1ln\u00ed vlastnosti pro aplikace v drsn\u00fdch prost\u0159ed\u00edch, jako je petrochemick\u00e9 zpracov\u00e1n\u00ed nebo za\u0159\u00edzen\u00ed na ods\u00ed\u0159en\u00ed spalin.<\/p>\n
Z chemick\u00e9ho hlediska je karbid k\u0159em\u00edku inertn\u00ed a odoln\u00fd v\u016f\u010di prakticky v\u0161em organick\u00fdm a anorganick\u00fdm kyselin\u00e1m, jako je kyselina fosfore\u010dn\u00e1, s\u00edrov\u00e1 a chlorovod\u00edkov\u00e1, a z\u00e1rove\u0148 je odoln\u00fd v\u016f\u010di korozi v oxida\u010dn\u00edch podm\u00ednk\u00e1ch. Krom\u011b toho je d\u00edky sv\u00e9 vynikaj\u00edc\u00ed odolnosti proti korozi vhodn\u00fd pro sou\u010d\u00e1sti vystaven\u00e9 vysok\u00fdm teplot\u00e1m nebo rychl\u00fdm teplotn\u00edm zm\u011bn\u00e1m, jako jsou trysky ho\u0159\u00e1k\u016f \/ tryskov\u00e9 trubky \/ \u010d\u00e1sti mechanick\u00fdch t\u011bsn\u011bn\u00ed.<\/p>\n
Karbid k\u0159em\u00edku (SiC) je impregnovan\u00e1 neoxidov\u00e1 keramika s vysokou tvrdost\u00ed a pevnost\u00ed. Krom\u011b toho je d\u00edky sv\u00e9 chemick\u00e9 odolnosti vysoce chemicky odoln\u00fd a tak\u00e9 polovodiv\u00fd - tyto vlastnosti u\u010dinily z SiC neoceniteln\u00fd materi\u00e1l, kter\u00fd se hojn\u011b pou\u017e\u00edv\u00e1 pro mechanick\u00e1 t\u011bsn\u011bn\u00ed, sou\u010d\u00e1sti \u010derpadel a za\u0159\u00edzen\u00ed pro zpracov\u00e1n\u00ed polovodi\u010d\u016f.<\/p>\n
Slinut\u00e1 keramika SiC m\u00e1 n\u00edzkou tepelnou rozta\u017enost a vynikaj\u00edc\u00ed mechanick\u00e9 vlastnosti, co\u017e z n\u00ed \u010din\u00ed ide\u00e1ln\u00ed materi\u00e1l pro vysokoteplotn\u00ed pece. Odol\u00e1vaj\u00ed teplot\u00e1m a\u017e 1600oC a z\u00e1rove\u0148 z\u016fst\u00e1vaj\u00ed odoln\u00e9 v\u016f\u010di teplotn\u00edm \u0161ok\u016fm.<\/p>\n
Reak\u010dn\u011b v\u00e1zan\u00fd karbid k\u0159em\u00edku (RB SiC, \u010dasto ozna\u010dovan\u00fd jako Calsic RB) nab\u00edz\u00ed ekonomickou alternativu ke slinut\u00e9mu SiC v aplikac\u00edch, kde nen\u00ed z\u00e1sadn\u00edm faktorem odolnost proti korozi nebo opot\u0159eben\u00ed. RB SiC, vyr\u00e1b\u011bn\u00fd p\u0159edm\u00edch\u00e1n\u00edm oxidu k\u0159emi\u010dit\u00e9ho s uhl\u00edkem p\u0159ed reak\u010dn\u00edm slinov\u00e1n\u00edm, poskytuje mnoho stejn\u00fdch v\u00fdhod za mnohem ni\u017e\u0161\u00ed cenu ne\u017e slinut\u00fd keramick\u00fd materi\u00e1l.<\/p>\n
Pr\u00e1\u0161ek karbidu k\u0159em\u00edku m\u00e1 v\u00fdjime\u010dnou chemickou stabilitu, pevnost a odolnost proti tepeln\u00e9 rozta\u017enosti p\u0159i velmi vysok\u00fdch teplot\u00e1ch, tak\u017ee je vhodn\u00fd pro pr\u016fmyslov\u00e9 keramick\u00e9 aplikace, jako jsou police a vyzd\u00edvky pec\u00ed. Krom\u011b toho lze karbid k\u0159em\u00edku pou\u017e\u00edt tak\u00e9 jako brusivo.<\/p>\n
Karbidu k\u0159em\u00edku jako nejtvrd\u0161\u00edm zn\u00e1m\u00fdm materi\u00e1l\u016fm konkuruje pouze diamant a kubick\u00fd nitrid b\u00f3ru. Jedn\u00e1 se o mimo\u0159\u00e1dn\u011b tvrd\u00fd materi\u00e1l, kter\u00fd se pou\u017e\u00edv\u00e1 v r\u016fzn\u00fdch aplikac\u00edch, od abraziv a prost\u0159edk\u016f odoln\u00fdch proti opot\u0159eben\u00ed, p\u0159es pokro\u010dil\u00e9 \u017e\u00e1ruvzdorn\u00e9 materi\u00e1ly a jemnou keramiku a\u017e po \u0159ezn\u00e9 n\u00e1stroje a syst\u00e9my rekuperace tepla.<\/p>\n
V metalurgii se pou\u017e\u00edv\u00e1 k \u0159ez\u00e1n\u00ed a brou\u0161en\u00ed tvrd\u00fdch materi\u00e1l\u016f, jako jsou kovy, k\u00e1men, \u017e\u00e1ruvzdorn\u00e9 materi\u00e1ly a litina. Krom\u011b toho je d\u00edky kombinaci tvrdosti, pevnosti, tepeln\u00e9 vodivosti a odolnosti proti korozi ide\u00e1ln\u00edm brusn\u00fdm materi\u00e1lem.<\/p>","protected":false},"excerpt":{"rendered":"
Pr\u00e1\u0161ky karbidu k\u0159em\u00edku pro vysokopevnostn\u00ed keramiku Pr\u00e1\u0161ek karbidu k\u0159em\u00edku se \u0161iroce pou\u017e\u00edv\u00e1 jako brusn\u00fd materi\u00e1l v aplikac\u00edch pro honov\u00e1n\u00ed, lapov\u00e1n\u00ed a le\u0161t\u011bn\u00ed kovov\u00fdch a keramick\u00fdch sou\u010d\u00e1st\u00ed. Krom\u011b toho se tento pr\u00e1\u0161ek m\u016f\u017ee pochlubit n\u011bkolika pr\u016fmyslov\u00fdmi aplikacemi d\u00edky sv\u00e9 pevnosti, tepeln\u00e9 vodivosti a odolnosti proti korozi. Karbid k\u0159em\u00edku lze vytvo\u0159it dv\u011bma procesy - reakc\u00ed ... \u010c\u00edst d\u00e1l<\/a><\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-67","post","type-post","status-publish","format-standard","hentry","category-knowledge"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/siliconcarbidepowders.com\/cs\/wp-json\/wp\/v2\/posts\/67","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/siliconcarbidepowders.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/siliconcarbidepowders.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/siliconcarbidepowders.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/siliconcarbidepowders.com\/cs\/wp-json\/wp\/v2\/comments?post=67"}],"version-history":[{"count":1,"href":"https:\/\/siliconcarbidepowders.com\/cs\/wp-json\/wp\/v2\/posts\/67\/revisions"}],"predecessor-version":[{"id":68,"href":"https:\/\/siliconcarbidepowders.com\/cs\/wp-json\/wp\/v2\/posts\/67\/revisions\/68"}],"wp:attachment":[{"href":"https:\/\/siliconcarbidepowders.com\/cs\/wp-json\/wp\/v2\/media?parent=67"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/siliconcarbidepowders.com\/cs\/wp-json\/wp\/v2\/categories?post=67"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/siliconcarbidepowders.com\/cs\/wp-json\/wp\/v2\/tags?post=67"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}