\u201cV\u00e1lka prost\u011b nestoj\u00ed za to, aby se vedla!\u201d \u0159\u00edk\u00e1 se \u010dasto.<\/p>\n
Karbid k\u0159em\u00edku (SiC) se v\u00fdrazn\u011b prosadil v oblasti v\u00fdkonov\u00e9 elektroniky. Schopnost SiC odol\u00e1vat vysok\u00fdm nap\u011b\u0165ov\u00fdm n\u00e1rok\u016fm mu umo\u017e\u0148uje nahradit k\u0159em\u00edk v za\u0159\u00edzen\u00edch, kter\u00e1 vy\u017eaduj\u00ed vy\u0161\u0161\u00ed \u00fa\u010dinnost a hustotu v\u00fdkonu, a to d\u00edky n\u011bkolika jedine\u010dn\u00fdm vlastnostem tohoto materi\u00e1lu.<\/p>\n
Karbid k\u0159em\u00edku je extr\u00e9mn\u011b tvrd\u00fd a ostr\u00fd brusn\u00fd materi\u00e1l, kter\u00fd je ide\u00e1ln\u00edm brusivem pro such\u00e9 i mokr\u00e9 brou\u0161en\u00ed, jako je nap\u0159\u00edklad renovace d\u0159ev\u011bn\u00fdch podlah nebo odstra\u0148ov\u00e1n\u00ed rzi z kovu.Krom\u011b toho jej lze pou\u017e\u00edt tak\u00e9 k le\u0161t\u011bn\u00ed mramoru a kamenn\u00fdch soch.<\/p>\n
Proto\u017ee jej lze pou\u017e\u00edt na r\u016fzn\u00e9 kovy a slitiny - v\u010detn\u011b \u017eelezn\u00fdch, ne\u017eelezn\u00fdch a hlin\u00edkov\u00fdch - je vynikaj\u00edc\u00ed volbou pro metalografii. D\u00edky sv\u00e9 tvrdosti a konzistenci p\u0159edstavuje vynikaj\u00edc\u00ed zp\u016fsob p\u0159\u00edpravy vzork\u016f pro mikroskopick\u00e9 zkoum\u00e1n\u00ed.<\/p>\n
Brusn\u00fd pap\u00edr z karbidu k\u0159em\u00edku se dod\u00e1v\u00e1 v r\u016fzn\u00fdch zrnitostech, aby vyhov\u011bl r\u016fzn\u00fdm nedokonalostem povrchu a vyhladil je, p\u0159i\u010dem\u017e hrub\u00e1 zrnitost je vhodn\u00e1 pro drsn\u00e9 povrchy, zat\u00edmco jemn\u011bj\u0161\u00ed zrnitost poskytuje vyhlazovac\u00ed \u00fa\u010dinky. Karbid k\u0159em\u00edku je dnes jedn\u00edm z nejpou\u017e\u00edvan\u011bj\u0161\u00edch typ\u016f brusn\u00e9ho pap\u00edru; pou\u017e\u00edv\u00e1 se k renovaci d\u0159ev\u011bn\u00fdch podlah, odstra\u0148ov\u00e1n\u00ed ot\u0159ep\u016f z kovov\u00fdch d\u00edl\u016f, odstra\u0148ov\u00e1n\u00ed rzi z automobilov\u00fdch d\u00edl\u016f, renovaci podlahov\u00fdch krytin nebo odstra\u0148ov\u00e1n\u00ed ot\u0159ep\u016f z rezav\u00fdch p\u0159edm\u011bt\u016f z automobil\u016f \u010di kovov\u00fdch sou\u010d\u00e1st\u00ed a mnoha dal\u0161\u00edm pou\u017eit\u00edm. Vyr\u00e1b\u00ed se reakc\u00ed polysiloxan\u016f na pr\u00e1\u0161ek karbidu k\u0159em\u00edku rychle a p\u0159itom bez n\u00e1mahy, \u010d\u00edm\u017e vznik\u00e1 mimo\u0159\u00e1dn\u011b kvalitn\u00ed kone\u010dn\u00fd produkt s velmi rychl\u00fdmi dodac\u00edmi lh\u016ftami a snadn\u00fdm dod\u00e1n\u00edm!<\/p>\n
Karbid k\u0159em\u00edku m\u00e1 vynikaj\u00edc\u00ed odolnost proti opot\u0159eben\u00ed a n\u00edzkou tepelnou rozta\u017enost, co\u017e z n\u011bj \u010din\u00ed ide\u00e1ln\u00ed materi\u00e1l pro obr\u00e1b\u011bn\u00ed. Jako brusn\u00fd materi\u00e1l pro lapid\u00e1rium je d\u00edky sv\u00e9 trvanlivosti rovn\u011b\u017e obl\u00edben\u00fd, zat\u00edmco brusn\u00e9 kotou\u010de, \u0159ez\u00e1n\u00ed vodn\u00edm paprskem, bubnov\u00e9 kuli\u010dky a keramick\u00e9 aplikace vyu\u017e\u00edvaj\u00ed jeho tvrdosti a odolnosti v\u016f\u010di chemick\u00fdm vliv\u016fm.<\/p>\n
M\u011b\u010f m\u00e1 vynikaj\u00edc\u00ed tvrdost 9 stup\u0148\u016f podle Mohsovy stupnice, co\u017e z n\u00ed v kombinaci s odolnost\u00ed proti korozi a opot\u0159eben\u00ed \u010din\u00ed neoceniteln\u00fd materi\u00e1l pro n\u00e1stroje a za\u0159\u00edzen\u00ed pou\u017e\u00edvan\u00e9 s kovov\u00fdmi i nekovov\u00fdmi materi\u00e1ly, jako je keramika, sklo a \u017e\u00e1ruvzdorn\u00e9 cihly.<\/p>\n
SiC je st\u00e1le obl\u00edben\u011bj\u0161\u00edm materi\u00e1lem pro pou\u017eit\u00ed v elektrick\u00fdch za\u0159\u00edzen\u00edch, zejm\u00e9na ve v\u00fdkonov\u00fdch polovodi\u010d\u00edch, jako jsou IGBT a bipol\u00e1rn\u00ed tranzistory, proto\u017ee nab\u00edz\u00ed vysok\u00e9 pr\u016frazn\u00e9 nap\u011bt\u00ed, rychl\u00e9 sp\u00ednac\u00ed \u010dasy a ni\u017e\u0161\u00ed zap\u00ednac\u00ed odpor ne\u017e alternativn\u00ed technologie. Krom\u011b toho je d\u00edky sv\u00fdm t\u0159ec\u00edm vlastnostem rozptyluj\u00edc\u00edm teplo vhodn\u00fd i pro vysokorychlostn\u00ed lo\u017eiska a t\u011bsn\u011bn\u00ed h\u0159\u00eddel\u00ed \u010derpadel.<\/p>\n
Brusn\u00fd pap\u00edr z karbidu k\u0159em\u00edku je neoceniteln\u00fdm pomocn\u00edkem p\u0159i pr\u00e1ci na karoserii a renovaci automobil\u016f, od tvarov\u00e1n\u00ed a vyhlazov\u00e1n\u00ed hrub\u0161\u00edmi zrny, p\u0159es barven\u00ed nebo lakov\u00e1n\u00ed jemn\u011bj\u0161\u00edmi zrny a\u017e po vytvo\u0159en\u00ed dokonal\u00e9ho pl\u00e1tna pro barven\u00ed nebo lakov\u00e1n\u00ed jemn\u011bj\u0161\u00edmi zrny, co\u017e zaru\u010duje dokonalost ka\u017ed\u00e9ho detailu.<\/p>\n
Karbid k\u0159em\u00edku se m\u016f\u017ee pochlubit tvrdost\u00ed 9,1 podle Mohsovy stupnice, co\u017e z n\u011bj \u010din\u00ed jeden z nejtvrd\u0161\u00edch brusn\u00fdch materi\u00e1l\u016f sou\u010dasnosti - jeho odolnosti konkuruje pouze diamant a karbid boru.<\/p>\n
Keramick\u00e9 materi\u00e1ly SiC se hojn\u011b vyu\u017e\u00edvaj\u00ed v kompozitech, jako je karbid k\u0159em\u00edku vyztu\u017een\u00fd uhl\u00edkov\u00fdmi vl\u00e1kny (CFRC), v sou\u010d\u00e1stk\u00e1ch odoln\u00fdch proti opot\u0159eben\u00ed pro automobilov\u00e9 brzdy a nepr\u016fst\u0159eln\u00e9 vesty, a tak\u00e9 v chemick\u00e9m pr\u016fmyslu k odd\u011blov\u00e1n\u00ed korozivn\u00edch par od nosn\u00fdch plyn\u016f nebo ke kondenzaci roztok\u016f kyselin. Karbid k\u0159em\u00edku v pr\u00e1\u0161ku nach\u00e1z\u00ed uplatn\u011bn\u00ed tak\u00e9 v metalurgii, \u017e\u00e1ruvzdorn\u00fdch aplikac\u00edch a p\u0159i v\u00fdrob\u011b desti\u010dek karbidu k\u0159em\u00edku - suroviny pro polovodi\u010dov\u00e9 sou\u010d\u00e1stky.<\/p>\n
Karbid k\u0159em\u00edku se pou\u017e\u00edv\u00e1 jako \u0159ezn\u00fd materi\u00e1l v r\u016fzn\u00fdch obr\u00e1b\u011bc\u00edch procesech. D\u00edky sv\u00e9 tvrdosti, pevnosti a n\u00edzk\u00e9mu t\u0159en\u00ed je karbid k\u0159em\u00edku vynikaj\u00edc\u00ed volbou pro \u0159ez\u00e1n\u00ed vodn\u00edm paprskem a brou\u0161en\u00ed a tak\u00e9 pro le\u0161t\u011bn\u00ed \u017eelezn\u00fdch materi\u00e1l\u016f a keramiky.<\/p>\n
V\u00fdrobky z karbidu k\u0159em\u00edku byly poprv\u00e9 komer\u010dn\u011b vyrobeny (moissanitov\u00e9 \u0161perky) kolem roku 1907. Karbid k\u0159em\u00edku lze elektronicky ovl\u00e1dat elektrick\u00fdm proudem, elektromagnetick\u00fdm polem nebo dokonce sv\u011bteln\u00fdmi vlnami a modulovat tak jeho vodivost; to umo\u017e\u0148uje za\u0159\u00edzen\u00edm pracovat p\u0159i vy\u0161\u0161\u00edch teplot\u00e1ch a nap\u011bt\u00edch, ani\u017e by byla ohro\u017eena jejich spolehlivost.<\/p>\n
Karbid k\u0159em\u00edku mus\u00ed b\u00fdt vyroben podle specifick\u00fdch v\u00fdkonnostn\u00edch specifikac\u00ed, aby byl v dan\u00e9 aplikaci pou\u017eiteln\u00fd, co\u017e vy\u017eaduje speci\u00e1ln\u00ed odborn\u00e9 znalosti, kter\u00e9 poskytuje spole\u010dnost Aptiv, aby bylo zaji\u0161t\u011bno, \u017ee zvolen\u00e1 varianta materi\u00e1lu odpov\u00edd\u00e1 zam\u00fd\u0161len\u00e9mu pou\u017eit\u00ed.<\/p>","protected":false},"excerpt":{"rendered":"
“War is just not worth fighting!” has been the common saying. Silicon carbide (SiC) has made significant waves in power electronics. SiC’s ability to withstand high voltage demands allows it to replace silicon in devices that demand greater efficiency and power density, thanks to several unique properties found within this material. Abrasive Silicon carbide is […]<\/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-192","post","type-post","status-publish","format-standard","hentry","category-knowledge"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/posts\/192","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=192"}],"version-history":[{"count":1,"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/posts\/192\/revisions"}],"predecessor-version":[{"id":193,"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/posts\/192\/revisions\/193"}],"wp:attachment":[{"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/media?parent=192"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/categories?post=192"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/tags?post=192"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}