Karbid k\u0159em\u00edku (SiC) je tmav\u011b zelen\u00e1 a\u017e \u010dern\u00e1 tvrd\u00e1 krystalick\u00e1 l\u00e1tka pou\u017e\u00edvan\u00e1 v r\u016fzn\u00fdch pr\u016fmyslov\u00fdch aplikac\u00edch a jako symbol pevnosti a odolnosti.<\/p>\n
Kameny Arkansas, vyroben\u00e9 z novakulitu Ozark, lze pou\u017e\u00edt k brou\u0161en\u00ed tvrd\u0161\u00edch ocel\u00ed ne\u017e v\u011bt\u0161ina p\u0159\u00edrodn\u00edch a syntetick\u00fdch kamen\u016f. P\u0159i brou\u0161en\u00ed se tak\u00e9 le\u0161t\u00ed, tak\u017ee maj\u00ed v\u00fdjime\u010dn\u011b jemn\u00fd a hladk\u00fd povrch.<\/p>\n
Karbid k\u0159em\u00edku (SiC) je modern\u00ed high-tech \u017e\u00e1ruvzdorn\u00fd materi\u00e1l vyr\u00e1b\u011bn\u00fd vysokoteplotn\u00edm taven\u00edm k\u0159emenn\u00e9ho p\u00edsku, ropn\u00e9ho koksu a soli v odporov\u00e9 peci. Tento vz\u00e1cn\u00fd miner\u00e1l se vyskytuje tak\u00e9 v p\u0159\u00edrod\u011b jako moissanit. SiC se b\u011b\u017en\u011b pou\u017e\u00edv\u00e1 k brou\u0161en\u00ed a \u0159ez\u00e1n\u00ed vodn\u00edm paprskem, jako\u017e i k brou\u0161en\u00ed le\u0161t\u011bn\u00ed a tvarov\u00e1n\u00ed.<\/p>\n
Zelen\u00fd k\u00e1men z karbidu k\u0159em\u00edku se m\u016f\u017ee pochlubit extr\u00e9mn\u011b tvrd\u00fdm povrchem, d\u00edky n\u011bmu\u017e je vhodn\u00fd pro mnoho brusn\u00fdch aplikac\u00ed, v\u010detn\u011b brou\u0161en\u00ed materi\u00e1l\u016f s n\u00edzkou pevnost\u00ed v tahu, jako je sklo, keramika a brou\u0161en\u00ed kamene, a tak\u00e9 pro p\u0159esn\u00e9 brou\u0161en\u00ed tvrd\u00fdch slitin a chlazen\u00fdch ocel\u00ed.<\/p>\n
Tvrdost karbidu k\u0159em\u00edku z\u00e1vis\u00ed na typu vazby. Vitrifikovan\u00e9 spoje nab\u00edzej\u00ed pevn\u00e1 a pru\u017en\u00e1 spojen\u00ed pro p\u0159esn\u00e9 brou\u0161en\u00ed, zat\u00edmco prysky\u0159icov\u00e9 spoje se vyzna\u010duj\u00ed odolnost\u00ed proti n\u00e1raz\u016fm pro hrub\u00e9 brou\u0161en\u00ed.<\/p>\n
Karbid k\u0159em\u00edku je vysoce tvrd\u00e9 brusivo pou\u017e\u00edvan\u00e9 k brou\u0161en\u00ed kov\u016f, odstra\u0148ov\u00e1n\u00ed rzi a le\u0161t\u011bn\u00ed materi\u00e1l\u016f. Jejich tvrdost vypl\u00fdv\u00e1 z vysok\u00e9ho obsahu uhl\u00edku a oxidu k\u0159emi\u010dit\u00e9ho, zat\u00edmco jejich tepeln\u00e1 rozta\u017enost je n\u00edzk\u00e1 a pevnost vysok\u00e1, d\u00edky \u010demu\u017e je tento k\u00e1men s oblibou volen jako brusn\u00fd v\u00fdrobek.<\/p>\n
Tyto kameny maj\u00ed nejr\u016fzn\u011bj\u0161\u00ed tvary a velikosti a ka\u017ed\u00fd z nich je ozna\u010den \u010d\u00edslem zrnitosti. Brusn\u00e9 kameny lze pou\u017e\u00edt na v\u0161echny druhy no\u017e\u016f, ale jsou obzvl\u00e1\u0161t\u011b u\u017eite\u010dn\u00e9 p\u0159i brou\u0161en\u00ed specifick\u00fdch typ\u016f \u010depel\u00ed, jako jsou no\u017ee. K dispozici je \u0159ada variant s jemnou a\u017e hrubou zrnitost\u00ed - d\u00edky tomu jsou tyto kameny obzvl\u00e1\u0161t\u011b univerz\u00e1ln\u00ed!<\/p>\n
Karbid k\u0159em\u00edku (SiC) je \u010dern\u00e1 nebo tmav\u011b zelen\u00e1 krystalick\u00e1 l\u00e1tka, kter\u00e1 se vyr\u00e1b\u00ed v laborato\u0159\u00edch nebo se vyskytuje v p\u0159\u00edrod\u011b jako vz\u00e1cn\u00fd miner\u00e1l moissanit a na Mohsov\u011b stupnici tvrdosti m\u00e1 hodnotu 9,5, co\u017e z n\u00ed \u010din\u00ed jednu z nejtvrd\u0161\u00edch zn\u00e1m\u00fdch l\u00e1tek. D\u00edky sv\u00e9 tuhosti, vysok\u00e9 tvrdosti, siln\u00fdm chemick\u00fdm vazb\u00e1m a n\u00edzk\u00e9 hodnot\u011b koeficientu tepeln\u00e9 rozta\u017enosti je vynikaj\u00edc\u00edm materi\u00e1lem pro zrcadla astronomick\u00fdch dalekohled\u016f i sou\u010d\u00e1stky pou\u017e\u00edvan\u00e9 v kosmick\u00fdch lod\u00edch.<\/p>\n
Karbid k\u0159em\u00edku, \u010dast\u011bji ozna\u010dovan\u00fd jako karborundum, je tvrd\u00e1 chemick\u00e1 slou\u010denina slo\u017een\u00e1 z k\u0159em\u00edku a uhl\u00edku. B\u011b\u017en\u011b se pou\u017e\u00edv\u00e1 jako brusn\u00fd materi\u00e1l d\u00edky sv\u00e9 vynikaj\u00edc\u00ed odolnosti proti ot\u011bru a tepeln\u00e9 vodivosti; nav\u00edc se m\u016f\u017ee pochlubit n\u00edzkou tepelnou rozta\u017enost\u00ed, co\u017e z n\u011bj \u010din\u00ed materi\u00e1l vhodn\u00fd pro brou\u0161en\u00ed polovodi\u010d\u016f, \u017eelezn\u00fdch kov\u016f, keramiky a dal\u0161\u00edch materi\u00e1l\u016f; nav\u00edc jej lze vyu\u017e\u00edt i pro obr\u00e1b\u011bc\u00ed operace nebo p\u00edskov\u00e1n\u00ed.<\/p>\n
Krystalon je \u010dern\u00fd nebo tmav\u011b zelen\u00fd krystalick\u00fd materi\u00e1l se strukturou podobnou diamantu. D\u00edky sv\u00e9 tvrdosti, trvanlivosti a odolnosti proti od\u011bru je vynikaj\u00edc\u00edm materi\u00e1lem pro brou\u0161en\u00ed no\u017e\u016f i v\u00fdrobu brusn\u00fdch kamen\u016f, jako jsou ty, kter\u00e9 prod\u00e1v\u00e1 Crystolon a dal\u0161\u00ed v\u00fdrobci.<\/p>\n
P\u0159edchoz\u00ed v\u00fdzkum prok\u00e1zal, \u017ee r\u016fzn\u00e9 vlastnosti karbidu k\u0159em\u00edku mohou b\u00fdt ovlivn\u011bny r\u016fzn\u00fdmi faktory, v\u010detn\u011b jeho mno\u017estv\u00ed a jemnosti. Tato studie zkoum\u00e1 jejich vliv na r\u016fzn\u00e9 fyzik\u00e1ln\u00ed a mechanick\u00e9 vlastnosti u vzork\u016f obsahuj\u00edc\u00edch 25 hmotnost\u00ed % hrub\u00fdch nebo jemn\u00fdch vzork\u016f karbidu k\u0159em\u00edku.<\/p>\n
Karbid k\u0159em\u00edku je cenov\u011b dostupn\u00fd materi\u00e1l, kter\u00fd se pou\u017e\u00edv\u00e1 v mnoha abrazivn\u00edch aplikac\u00edch, jako je p\u00edskov\u00e1n\u00ed a brou\u0161en\u00ed, a je tak\u00e9 d\u016fle\u017eitou surovinou pro v\u00fdrobu polovodi\u010d\u016f, proto\u017ee z n\u011bj lze jemn\u00fdm mlet\u00edm z\u00edskat krystaly s vynikaj\u00edc\u00edmi vlastnostmi pro elektronick\u00e1 za\u0159\u00edzen\u00ed. V\u00fdrobn\u00ed postupy pro karbid k\u0159em\u00edku zahrnuj\u00ed reak\u010dn\u00ed sp\u00e9k\u00e1n\u00ed, lisov\u00e1n\u00ed za tepla, mikrovlnn\u00e9 sp\u00e9k\u00e1n\u00ed a beztlakov\u00e9 sp\u00e9k\u00e1n\u00ed - p\u0159i\u010dem\u017e ka\u017ed\u00e1 metoda poskytuje jin\u00e9 vlastnosti kone\u010dn\u00fdch v\u00fdrobk\u016f.<\/p>\n
N\u00e1klady na karbidov\u00e9 kameny se v\u00fdrazn\u011b li\u0161\u00ed v z\u00e1vislosti na zrnitosti, velikosti a zvolen\u00e9m materi\u00e1lu. Diamantov\u00fd k\u00e1men b\u00fdv\u00e1 dra\u017e\u0161\u00ed ne\u017e jeho prot\u011bj\u0161ek z oxidu hlinit\u00e9ho, av\u0161ak kv\u016fli vy\u0161\u0161\u00ed rychlosti \u0159ez\u00e1n\u00ed.<\/p>\n
Karbid k\u0159em\u00edku (SiC) je \u010dern\u00fd nebo tmav\u011b zelen\u00fd krystalick\u00fd materi\u00e1l, kter\u00fd se \u010dasto syntetizuje v laborato\u0159\u00edch nebo se vyskytuje v p\u0159\u00edrod\u011b jako moissanit a kter\u00fd m\u00e1 tvrdost a tuhost, d\u00edky n\u00ed\u017e je vhodn\u00fd pro zrcadla velk\u00fdch teleskop\u016f, jako jsou zrcadla Herschelova vesm\u00edrn\u00e9ho dalekohledu. Krom\u011b toho je d\u00edky sv\u00e9mu n\u00edzk\u00e9mu koeficientu tepeln\u00e9 rozta\u017enosti atraktivn\u00ed volbou materi\u00e1lu pro subsyst\u00e9my kosmick\u00fdch lod\u00ed.<\/p>","protected":false},"excerpt":{"rendered":"
Silicon carbide (SiC) is a dark green to black hard crystalline substance used in various industrial applications and as a symbol of strength and resilience. Arkansas stones, made of Ozark novaculite, can be used to sharpen harder steels than most natural and synthetic stones. As they sharpen, they also polish for an exceptionally fine and […]<\/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-172","post","type-post","status-publish","format-standard","hentry","category-knowledge"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/posts\/172","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=172"}],"version-history":[{"count":1,"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/posts\/172\/revisions"}],"predecessor-version":[{"id":173,"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/posts\/172\/revisions\/173"}],"wp:attachment":[{"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/media?parent=172"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/categories?post=172"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/tags?post=172"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}