Pr\u00e1\u0161ek karbidu k\u0159em\u00edku lze pou\u017e\u00edt k trysk\u00e1n\u00ed, bubnov\u00e1n\u00ed a le\u0161t\u011bn\u00ed r\u016fzn\u00fdch materi\u00e1l\u016f, jako je kov\/kamenivo. Lze zakoupit zelen\u00e9 i \u010dern\u011b zbarven\u00e9 varianty tohoto materi\u00e1lu.<\/p>\n
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 vz\u00e1cn\u00fd miner\u00e1l moissanit, av\u0161ak od roku 1893 se masov\u011b vyr\u00e1b\u00ed jako brusivo. SiC m\u00e1 ve srovn\u00e1n\u00ed s podobn\u00fdmi materi\u00e1ly, jako je polyvinylchlorid (PVC), vynikaj\u00edc\u00ed pevnost, odolnost proti opot\u0159eben\u00ed, tepelnou vodivost a n\u00edzk\u00fd koeficient rozta\u017enosti p\u0159i velmi vysok\u00fdch teplot\u00e1ch.<\/p>\n
Pr\u00e1\u0161ek karbidu k\u0159em\u00edku je mimo\u0159\u00e1dn\u011b univerz\u00e1ln\u00ed brusn\u00fd materi\u00e1l, kter\u00fd se pou\u017e\u00edv\u00e1 pro mnoho aplikac\u00ed. D\u00edky sv\u00e9 tvrdosti a abrazivit\u011b je karbid k\u0159em\u00edku ide\u00e1ln\u00ed pro brou\u0161en\u00ed nebo \u0159ez\u00e1n\u00ed materi\u00e1l\u016f, jako je d\u0159evo, kov, sklo a keramika. Jeho jemn\u00e1 povrchov\u00e1 \u00faprava nav\u00edc vytv\u00e1\u0159\u00ed ide\u00e1ln\u00ed podm\u00ednky pro procesy lakov\u00e1n\u00ed nebo nan\u00e1\u0161en\u00ed n\u00e1t\u011brov\u00fdch hmot.<\/p>\n
\u010cern\u00fd pr\u00e1\u0161kov\u00fd karbid k\u0159em\u00edku se \u0161iroce pou\u017e\u00edv\u00e1 pro pr\u016fmyslov\u00e9 aplikace, v\u010detn\u011b lapov\u00e1n\u00ed a le\u0161t\u011bn\u00ed ne\u017eelezn\u00fdch kov\u016f a \u0159ez\u00e1n\u00ed k\u0159emene. Krom\u011b toho tento materi\u00e1l slou\u017e\u00ed jako p\u0159\u00edsada do r\u016fzn\u00fdch lepen\u00fdch a potahovan\u00fdch brusn\u00fdch v\u00fdrobk\u016f, jako jsou brusn\u00e9 pap\u00edry a \u0159ezn\u00e9 kotou\u010de; nav\u00edc hraje z\u00e1sadn\u00ed roli p\u0159i v\u00fdrob\u011b polovodi\u010d\u016f d\u00edky sv\u00e9 vynikaj\u00edc\u00ed tepeln\u00e9 vodivosti a odolnosti proti opot\u0159eben\u00ed.<\/p>\n
Karbid k\u0159em\u00edku je d\u00edky sv\u00fdm brusn\u00fdm vlastnostem u\u017eite\u010dn\u00fd p\u0159i um\u011bleck\u00fdch a \u0159emesln\u00fdch projektech, nap\u0159\u00edklad p\u0159i brou\u0161en\u00ed d\u0159ev\u011bn\u00fdch a kovov\u00fdch povrch\u016f, aby se vytvo\u0159il hladk\u00fd povrch p\u0159ipraven\u00fd k malov\u00e1n\u00ed nebo lakov\u00e1n\u00ed. P\u0159i pr\u00e1ci s t\u00edmto materi\u00e1lem je v\u0161ak t\u0159eba v\u017edy pou\u017e\u00edvat vhodn\u00e9 ochrann\u00e9 pom\u016fcky kv\u016fli prachu vznikaj\u00edc\u00edmu p\u0159i opracov\u00e1n\u00ed povrchu - vdechnut\u00ed by mohlo b\u00fdt potenci\u00e1ln\u011b \u0161kodliv\u00e9.<\/p>\n
Karbid k\u0159em\u00edku (SiC) je nerozpustn\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 drahokam moissanit; ve velk\u00e9m m\u011b\u0159\u00edtku se v\u0161ak vyr\u00e1b\u00ed jako pr\u00e1\u0161kov\u00e9 brusivo a tvrd\u00e9 keramick\u00e9 bloky pou\u017e\u00edvan\u00e9 pro nepr\u016fst\u0159eln\u00e9 vesty. A\u010dkoli je karbid k\u0159em\u00edku nerozpustn\u00fd ve vod\u011b nebo alkoholu a odoln\u00fd v\u016f\u010di organick\u00fdm kyselin\u00e1m, slou\u017e\u00ed jako vynikaj\u00edc\u00ed elektrick\u00fd izolant s n\u00edzk\u00fdm koeficientem tepeln\u00e9 rozta\u017enosti a vysokou pevnost\u00ed p\u0159i zv\u00fd\u0161en\u00fdch teplot\u00e1ch; p\u0159i dopov\u00e1n\u00ed kovy, jako je b\u00f3r a hlin\u00edk, se z n\u011bj st\u00e1v\u00e1 materi\u00e1l podobn\u00fd polovodi\u010di s dopovateln\u00fdmi polovodi\u010dov\u00fdmi vlastnostmi; p\u0159irozen\u011b.<\/p>\n
Karbid k\u0159em\u00edku metalurgick\u00e9 kvality se vyzna\u010duje ni\u017e\u0161\u00edm obsahem dus\u00edku a s\u00edry ne\u017e jeho prot\u011bj\u0161ky, co\u017e z n\u011bj \u010din\u00ed ide\u00e1ln\u00ed produkt pro ocel\u00e1\u0159sk\u00fd pr\u016fmysl. Pou\u017e\u00edv\u00e1 se jako \u017e\u00e1ruvzdorn\u00fd materi\u00e1l, sou\u010d\u00e1stky odoln\u00e9 proti opot\u0159eben\u00ed, lehk\u00fd n\u00e1bytek do pec\u00ed, jako jsou topeni\u0161tn\u00ed desky, rekupera\u010dn\u00ed trubky, tla\u010dn\u00e9 desky a kluzn\u00e9 li\u0161ty; pou\u017e\u00edv\u00e1 se tak\u00e9 p\u0159i v\u00fdrob\u011b neoxidov\u00e9 keramiky jako abrazivn\u00ed aplikace a jako podp\u016frn\u00fd a odkl\u00e1dac\u00ed materi\u00e1l v prost\u0159ed\u00ed keramick\u00e9ho tv\u00e1\u0159en\u00ed, taven\u00ed skla a vysokoteplotn\u00edch pec\u00ed.<\/p>\n
Karbid k\u0159em\u00edku m\u016f\u017ee b\u00fdt ide\u00e1ln\u00edm materi\u00e1lem pro keramick\u00e9 aplikace d\u00edky sv\u00e9 vynikaj\u00edc\u00ed odolnosti proti chemick\u00e9 erozi a korozi, vysok\u00fdm teplot\u00e1m a ot\u011bru, tak\u017ee je vhodn\u00fd pro modern\u00ed lapid\u00e1rn\u00ed postupy v\u010detn\u011b brou\u0161en\u00ed, honov\u00e1n\u00ed a \u0159ez\u00e1n\u00ed vodn\u00edm paprskem. Krom\u011b toho jsou podp\u011bry a police z karbidu k\u0159em\u00edku vhodn\u00e9 pro vysokoteplotn\u00ed pece jako podp\u016frn\u00fd materi\u00e1l.<\/p>\n
Slinut\u00fd SiC je d\u00edky sv\u00e9 chemick\u00e9 inertnosti, tvrdosti, n\u00edzk\u00e9 hustot\u011b, tepeln\u00e9 vodivosti a n\u00edzk\u00e9mu koeficientu rozta\u017enosti vysoce odoln\u00fd v\u016f\u010di korozi. Krom\u011b toho tento materi\u00e1l nab\u00edz\u00ed v\u00fdjime\u010dnou odolnost proti opot\u0159eben\u00ed i vysokou odolnost proti ot\u011bru - vlastnosti, kter\u00e9 zaji\u0161\u0165uj\u00ed optim\u00e1ln\u00ed tribologick\u00e9 vlastnosti p\u0159i velk\u00e9m zat\u00ed\u017een\u00ed, n\u00edzk\u00fdch kluzn\u00fdch rychlostech a teplotn\u00edch zm\u011bn\u00e1ch.<\/p>\n
\u010cist\u00fd SiC lze vytvo\u0159it zah\u0159\u00edv\u00e1n\u00edm k\u0159emi\u010dit\u00e9ho p\u00edsku a zdroj\u016f uhl\u00edku, jako je uhl\u00ed, p\u0159i vysok\u00fdch teplot\u00e1ch v otev\u0159en\u00e9 peci (Lelyho proces). V\u00fdsledkem je sublimace pr\u00e1\u0161ku na krystaly SiC, kter\u00e9 mohou b\u00fdt v z\u00e1vislosti na \u010distot\u011b zelen\u00e9 nebo \u010dern\u00e9.<\/p>\n
Karbid k\u0159em\u00edku (zkr\u00e1cen\u011b SiC, Carborundum nebo Carb) je modern\u00ed neoxidov\u00fd \u017e\u00e1ruvzdorn\u00fd materi\u00e1l. P\u0159irozen\u011b se vyskytuje pouze v lo\u017eisc\u00edch moissanitu a jeho hromadn\u00e1 v\u00fdroba za\u010dala v roce 1893 bu\u010f ve form\u011b zrnit\u00e9ho pr\u00e1\u0161ku, nebo tvrd\u00fdch krystal\u016f pro pou\u017eit\u00ed jako brusivo. Krom\u011b toho lze SiC tak\u00e9 spojovat sp\u00e9k\u00e1n\u00edm do vysoce odoln\u00fdch keramick\u00fdch struktur.<\/p>\n
Zelen\u00fd slinut\u00fd karbid k\u0159em\u00edku se vyr\u00e1b\u00ed taven\u00edm k\u0159emenn\u00e9ho p\u00edsku, ropn\u00e9ho koksu a soli v odporov\u00e9 peci p\u0159i vysok\u00fdch teplot\u00e1ch. Jeho tvrdost podle Mohsovy stupnice le\u017e\u00ed mezi korundem a diamantem; nav\u00edc se vyzna\u010duje vynikaj\u00edc\u00ed hou\u017eevnatost\u00ed a trvanlivost\u00ed. Brusiva z keramick\u00fdch vl\u00e1ken se b\u011b\u017en\u011b pou\u017e\u00edvaj\u00ed jako brusivo p\u0159i p\u0159\u00edprav\u011b povrch\u016f, obr\u00e1b\u011bn\u00ed kov\u016f a v\u00fdrob\u011b keramiky. Krom\u011b toho jsou vynikaj\u00edc\u00edm izolantem v pec\u00edch a pec\u00edch. Vodiv\u00fd polovodi\u010dov\u00fd slinut\u00fd pr\u00e1\u0161ek SiC byl vytvo\u0159en speci\u00e1ln\u011b pro spln\u011bn\u00ed rostouc\u00edch po\u017eadavk\u016f na polovodi\u010dov\u00e9 vodiv\u00e9 monokrystaly karbidu k\u0159em\u00edku t\u0159et\u00ed generace s velikost\u00ed \u010d\u00e1stic od 10 mikrometr\u016f do 100 mikrometr\u016f a \u010distotou produktu vy\u0161\u0161\u00ed ne\u017e 6N. Nach\u00e1z\u00ed uplatn\u011bn\u00ed nap\u0159\u00edklad v t\u011blesech ventil\u016f bleskojistek a elektrick\u00fdch topn\u00fdch t\u011blesech z k\u0159em\u00edkov\u00e9ho uhl\u00edku.<\/p>","protected":false},"excerpt":{"rendered":"
Silicon carbide powder can be used for blasting, tumbling and polishing various materials such as metal\/gemstone. Both green and black tinted varieties of this material can be purchased. Silicon carbide (SiC) is an inorganic chemical compound composed of silicon and carbon found in nature as the rare mineral moissanite, though mass produced since 1893 for […]<\/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-138","post","type-post","status-publish","format-standard","hentry","category-knowledge"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/posts\/138","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=138"}],"version-history":[{"count":1,"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/posts\/138\/revisions"}],"predecessor-version":[{"id":139,"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/posts\/138\/revisions\/139"}],"wp:attachment":[{"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/media?parent=138"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/categories?post=138"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/tags?post=138"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}