![\"Karbid](\"http:\/\/siliconcarbideceramic.net\/wp-content\/uploads\/2024\/10\/Silicon-Carbide-Powder.jpg\")
<\/p>","protected":false},"excerpt":{"rendered":"Karbid k\u0159em\u00edku (SiC) je anorganick\u00e1 chemick\u00e1 slou\u010denina slo\u017een\u00e1 z k\u0159em\u00edku a uhl\u00edku, kter\u00e1 se v p\u0159\u00edrod\u011b vyskytuje jako velmi vz\u00e1cn\u00fd miner\u00e1l moissanit; masov\u011b se v\u0161ak za\u010dal vyr\u00e1b\u011bt v roce 1893 ve form\u011b pr\u00e1\u0161ku i krystal\u016f pro pou\u017eit\u00ed jako brusivo.<\/p>\n
\u010cern\u00fd karbid k\u0159em\u00edku je brusivo pro vysoce p\u0159esn\u00e9 lapov\u00e1n\u00ed a le\u0161t\u011bn\u00ed d\u00edky sv\u00fdm velk\u00fdm krystal\u016fm, v\u00fdjime\u010dn\u00e9 hou\u017eevnatosti, hust\u00e9 struktu\u0159e a opakovan\u00e9mu v\u00fdkonu p\u0159i opakovan\u00fdch aplikac\u00edch.<\/p>\n
Karbid k\u0159em\u00edku v pr\u00e1\u0161ku je extr\u00e9mn\u011b tvrd\u00fd materi\u00e1l odoln\u00fd proti opot\u0159eben\u00ed, co\u017e z n\u011bj \u010din\u00ed ide\u00e1ln\u00ed surovinu pro v\u00fdrobu brusn\u00fdch materi\u00e1l\u016f, jako jsou brusn\u00e9 kotou\u010de a \u0159ezn\u00e9 n\u00e1stroje. Krom\u011b toho se d\u00edky sv\u00e9 vynikaj\u00edc\u00ed tepeln\u00e9 vodivosti a odolnosti s oblibou pou\u017e\u00edv\u00e1 jako p\u0159\u00eddavn\u00e1 sou\u010d\u00e1st p\u0159i v\u00fdrob\u011b elektroniky a polovodi\u010d\u016f.<\/p>\n
SiC lze vyr\u00e1b\u011bt zah\u0159\u00edv\u00e1n\u00edm k\u0159emi\u010dit\u00e9ho p\u00edsku se zdroji uhl\u00edku, jako je ropn\u00fd koks, na vysok\u00e9 teploty v otev\u0159en\u00e9 \"Achesonov\u011b\" peci, \u010d\u00edm\u017e vznikaj\u00ed zelen\u00e1 nebo \u010dern\u011b zbarven\u00e1 zrna karbidu k\u0159em\u00edku s men\u0161\u00edm mno\u017estv\u00edm ne\u010distot ne\u017e jeho prot\u011bj\u0161ek ni\u017e\u0161\u00ed kvality.<\/p>\n
Zelen\u00fd nebo \u010dern\u00fd pr\u00e1\u0161ek karbidu k\u0159em\u00edku se sm\u00edch\u00e1 s neoxidov\u00fdm sp\u00e9kac\u00edm prost\u0159edkem, zn\u00e1m\u00fdm jako pojivo, a vytvo\u0159\u00ed se pasta. Pasta se pak zhut\u0148uje a tvaruje vytla\u010dov\u00e1n\u00edm (trubky) nebo izostatick\u00fdm lisov\u00e1n\u00edm za studena, kdy se \u010d\u00e1stice vtla\u010duj\u00ed do tuh\u00fdch forem tlakem z v\u00edce sm\u011br\u016f, aby se vytvo\u0159ily tvary, kter\u00e9 lze n\u00e1sledn\u011b opracovat.<\/p>\n
D\u00edky sv\u00e9 vynikaj\u00edc\u00ed tepeln\u00e9 vodivosti je pr\u00e1\u0161kov\u00fd karbid k\u0159em\u00edku neoceniteln\u00fdm materi\u00e1lem v r\u016fzn\u00fdch pr\u016fmyslov\u00fdch odv\u011btv\u00edch, zejm\u00e9na p\u0159i v\u00fdrob\u011b elektroniky a polovodi\u010d\u016f, kde je jeho schopnost odol\u00e1vat vysok\u00fdm teplot\u00e1m, ani\u017e by se stal nestabiln\u00edm, velkou v\u00fdhodou.<\/p>\n
Mezi materi\u00e1ly s vysokou odolnost\u00ed v\u016f\u010di po\u0161kozen\u00ed a tepeln\u00fdm \u0161ok\u016fm pat\u0159\u00ed akryl. Tento v\u0161estrann\u00fd materi\u00e1l vydr\u017e\u00ed v\u00fdraznou plastickou deformaci, ne\u017e dojde k prasknut\u00ed, a m\u016f\u017ee se pochlubit n\u00edzkou m\u00edrou rozta\u017enosti p\u0159i zm\u011bn\u00e1ch teploty.<\/p>\n
\u010cern\u00e1 zrnitost karbidu k\u0159em\u00edku je na rozd\u00edl od diamantu mimo\u0159\u00e1dn\u011b hou\u017eevnat\u00e1 a v\u0161estrann\u00e1; lze ji pou\u017e\u00edt nap\u0159\u00edklad pro brusn\u00e9 kotou\u010de, brusn\u00e9 pap\u00edry a povlakovan\u00e9 a lepen\u00e9 abrazivo pro trysk\u00e1n\u00ed. D\u00edky sv\u00e9 tvrdosti a vynikaj\u00edc\u00ed chemick\u00e9 a tepeln\u00e9 stabilit\u011b p\u0159edstavuje cenov\u011b dostupnou alternativu ke karbidov\u00fdm brusiv\u016fm z boru vyr\u00e1b\u011bn\u00fdm reak\u010dn\u00edm spojov\u00e1n\u00edm za pou\u017eit\u00ed \u010dist\u00e9ho k\u0159emi\u010dit\u00e9ho p\u00edsku a uhl\u00ed jako surovin v cihlov\u00fdch elektrick\u00fdch odporov\u00fdch pec\u00edch.<\/p>\n
SiC je jedn\u00edm z nejtvrd\u0161\u00edch syntetick\u00fdch materi\u00e1l\u016f, co do tvrdosti je na druh\u00e9m m\u00edst\u011b za diamantem. D\u00edky t\u00e9to vlastnosti je atraktivn\u00edm materi\u00e1lem pro aplikace, kde je kl\u00ed\u010dov\u00fd vysok\u00fd v\u00fdkon a odolnost, nap\u0159\u00edklad pro brusn\u00e9 aplikace.<\/p>\n
nab\u00edz\u00edme v\u00fdrobky z reak\u010dn\u011b v\u00e1zan\u00e9ho karbidu k\u0159em\u00edku a cementovan\u00e9ho karbidu wolframu, kter\u00e9 jsou navr\u017eeny tak, aby spl\u0148ovaly specifick\u00e9 \u017e\u00e1ruvzdorn\u00e9, chemick\u00e9 a tepeln\u00e9 vlastnosti. Reak\u010dn\u011b v\u00e1zan\u00fd karbid k\u0159em\u00edku je ide\u00e1ln\u00ed pro aplikace, kde je t\u0159eba zohlednit odolnost proti opot\u0159eben\u00ed nebo slo\u017eit\u00e9 tvary; cementovan\u00fd karbid wolframu nab\u00edz\u00ed lep\u0161\u00ed tepeln\u00e9 a chemick\u00e9 izola\u010dn\u00ed vlastnosti ne\u017e jeho prot\u011bj\u0161ek.<\/p>\n
D\u00edky sv\u00fdm abrazivn\u00edm vlastnostem je \u010dern\u00fd karbid k\u0159em\u00edku obl\u00edben\u00fd v automobilov\u00e9m a leteck\u00e9m pr\u016fmyslu pro honov\u00e1n\u00ed a lapov\u00e1n\u00ed sou\u010d\u00e1st\u00ed na p\u0159esn\u00e9 rozm\u011bry a povrchovou \u00fapravu nebo pro trysk\u00e1n\u00ed odoln\u00e9 proti korozi a opot\u0159eben\u00ed. Jeho v\u00fdjime\u010dn\u00e1 pevnost a odolnost mu nav\u00edc umo\u017e\u0148uj\u00ed odol\u00e1vat extr\u00e9mn\u00edm podm\u00ednk\u00e1m a p\u0159itom z\u016fstat neporu\u0161en\u00fd, a d\u00edky sv\u00e9 odolnosti proti korozi a opot\u0159eben\u00ed je zn\u00e1m\u00fd jako abrazivn\u00ed materi\u00e1l pro trysk\u00e1n\u00ed. Jeho odolnost proti korozi a opot\u0159eben\u00ed nav\u00edc pom\u00e1h\u00e1 prodlu\u017eovat \u017eivotnost sou\u010d\u00e1st\u00ed a z\u00e1rove\u0148 sni\u017eovat prostoje - plat\u00ed to zejm\u00e9na u n\u00e1stroj\u016f, jako jsou brusn\u00e9 kotou\u010de nebo tryskac\u00ed abraziva, kter\u00e9 pou\u017e\u00edvaj\u00ed \u010dern\u00e1 tryskac\u00ed abraziva z karbidu k\u0159em\u00edku, nebo u \u0159ezn\u00fdch n\u00e1stroj\u016f, kter\u00e9 vy\u017eaduj\u00ed neust\u00e1lou \u00fadr\u017ebu nebo prostoje kv\u016fli povlak\u016fm odoln\u00fdm proti korozi\/opot\u0159eben\u00ed nebo \u0159ezn\u00fdm n\u00e1stroj\u016fm z tohoto materi\u00e1lu.<\/p>\n
Karbid k\u0159em\u00edku je extr\u00e9mn\u011b tvrd\u00fd a lehk\u00fd keramick\u00fd materi\u00e1l s vynikaj\u00edc\u00ed tepelnou stabilitou a odolnost\u00ed proti korozi, d\u00edky \u010demu\u017e je vhodn\u00fd pro aplikace s vysok\u00fdm zat\u00ed\u017een\u00edm, jako jsou pr\u016fmyslov\u00e9 stroje a automobilov\u00e9 komponenty.<\/p>\n
Moissanit, polovodi\u010dov\u00fd materi\u00e1l se \u0161irok\u00fdm p\u00e1smov\u00fdm rozp\u011bt\u00edm, kter\u00fd se v p\u0159\u00edrod\u011b vyskytuje jako drahokam moissanit, se od konce 19. stolet\u00ed masov\u011b vyr\u00e1b\u00ed jako brusivo, nap\u0159\u00edklad pro brusn\u00e9 kotou\u010de a \u0159ezn\u00e9 n\u00e1stroje, v \u017e\u00e1ruvzdorn\u00fdch oblo\u017een\u00edch \u010derpadel, raketov\u00fdch motor\u016f a dal\u0161\u00edch stroj\u016f, proto\u017ee sou\u010d\u00e1stky odoln\u00e9 proti opot\u0159eben\u00ed, tuhost, odolnost proti teplotn\u00edm \u0161ok\u016fm a pevnost jsou rovn\u011b\u017e \u017e\u00e1douc\u00edmi vlastnostmi pro v\u00fdrobu zrcadel teleskop\u016f z tohoto materi\u00e1lu.<\/p>\n
Achesonova p\u016fvodn\u00ed metoda v\u00fdroby SiC z\u016fst\u00e1v\u00e1 st\u0159edobodem modern\u00ed v\u00fdroby pro pou\u017eit\u00ed v abrazivech, metalurgii a \u017e\u00e1ruvzdorn\u00fdch materi\u00e1lech. Suroviny se zah\u0159\u00edvaj\u00ed p\u0159i vysok\u00fdch teplot\u00e1ch v otev\u0159en\u00e9 peci, dokud se nevytvo\u0159\u00ed agreg\u00e1t zelen\u00e9ho a\u017e \u010dern\u00e9ho krystalick\u00e9ho SiC, obklopen\u00fd \u010d\u00e1ste\u010dn\u011b nebo zcela nekonvertovan\u00fdm oxidem k\u0159emi\u010dit\u00fdm a uhl\u00edkem ve form\u011b ropn\u00e9ho koksu.<\/p>\n
<\/p>","protected":false},"excerpt":{"rendered":"
Silicon Carbide Powder – High Efficiency Abrasive for Industrial Use Silicon carbide (SiC) is an inorganic chemical compound composed of […]<\/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":"default","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":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","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":[5],"tags":[],"class_list":["post-358","post","type-post","status-publish","format-standard","hentry","category-product-related"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/siliconcarbideceramic.net\/cs\/wp-json\/wp\/v2\/posts\/358","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=358"}],"version-history":[{"count":1,"href":"https:\/\/siliconcarbideceramic.net\/cs\/wp-json\/wp\/v2\/posts\/358\/revisions"}],"predecessor-version":[{"id":360,"href":"https:\/\/siliconcarbideceramic.net\/cs\/wp-json\/wp\/v2\/posts\/358\/revisions\/360"}],"wp:attachment":[{"href":"https:\/\/siliconcarbideceramic.net\/cs\/wp-json\/wp\/v2\/media?parent=358"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/siliconcarbideceramic.net\/cs\/wp-json\/wp\/v2\/categories?post=358"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/siliconcarbideceramic.net\/cs\/wp-json\/wp\/v2\/tags?post=358"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}