Uvoln\u011bn\u00ed \u00fa\u017easn\u00fdch vlastnost\u00ed karbidu k\u0159em\u00edku (SiC).<\/p>\n
Suroviny pou\u017e\u00edvan\u00e9 k v\u00fdrob\u011b SiC proch\u00e1zej\u00ed p\u0159\u00edsn\u00fdmi \u010distic\u00edmi procesy a pot\u00e9 jsou rozemlety na jemn\u00fd pr\u00e1\u0161ek pro dal\u0161\u00ed zpracov\u00e1n\u00ed.<\/p>\n
\u010cern\u00fd SiC je \u0161iroce vyu\u017e\u00edv\u00e1n pro pou\u017eit\u00ed v brusn\u00fdch aplikac\u00edch, jako jsou brusn\u00e9 kotou\u010de a \u0159ezn\u00e9 kotou\u010de, kter\u00e9 poskytuj\u00ed vysok\u00fd v\u00fdkon a dlouhou \u017eivotnost. Krom\u011b toho je p\u0159\u00ednosem pro metalurgick\u00fd i \u017eelez\u00e1\u0159sk\u00fd pr\u016fmysl, proto\u017ee p\u016fsob\u00ed jako deoxidant a aditivum.<\/p>\n
Karbid k\u0159em\u00edku je zn\u00e1m\u00fd svou tvrdost\u00ed, tak\u017ee je ide\u00e1ln\u00ed pro aplikace vy\u017eaduj\u00edc\u00ed odolnost. Krom\u011b toho jeho pevnost a odolnost proti ot\u011bru umo\u017e\u0148uj\u00ed dlouhodob\u00fd v\u00fdkon se sn\u00ed\u017een\u00fdmi po\u017eadavky na \u00fadr\u017ebu ve srovn\u00e1n\u00ed s alternativn\u00edmi materi\u00e1ly.<\/p>\n
Tepeln\u00e1 vodivost je dal\u0161\u00ed vynikaj\u00edc\u00ed vlastnost\u00ed, kter\u00e1 umo\u017e\u0148uje rychl\u00fd odvod tepla pro rychl\u00e9 a efektivn\u00ed v\u00fdsledky. Ve spojen\u00ed s vysokou teplotn\u00ed toleranc\u00ed a n\u00edzk\u00fdm koeficientem rozta\u017enosti pom\u00e1h\u00e1 tato vlastnost minimalizovat zm\u011bny rozm\u011br\u016f p\u0159i vystaven\u00ed extr\u00e9mn\u00edm teplot\u00e1m a z\u00e1rove\u0148 zaru\u010duje struktur\u00e1ln\u00ed integritu sou\u010d\u00e1st\u00ed.<\/p>\n
\u010cern\u00fd karbid k\u0159em\u00edku se dod\u00e1v\u00e1 v r\u016fzn\u00fdch zrnitostech a je dostate\u010dn\u011b univerz\u00e1ln\u00ed pro mnoho r\u016fzn\u00fdch v\u00fdrobn\u00edch proces\u016f, v\u010detn\u011b le\u0161t\u011bn\u00ed, brou\u0161en\u00ed a tvarov\u00e1n\u00ed keramiky a sklen\u011bn\u00fdch materi\u00e1l\u016f pou\u017e\u00edvan\u00fdch v pec\u00edch, pec\u00edch a \u017e\u00e1ruvzdorn\u00fdch materi\u00e1lech - stejn\u011b jako kov\u016f, jako je hlin\u00edk a titan - v pec\u00edch, pec\u00edch a \u017e\u00e1ruvzdorn\u00fdch materi\u00e1lech, stejn\u011b jako pro p\u0159esn\u00e9 lapov\u00e1n\u00ed a le\u0161t\u011bn\u00ed. Krom\u011b toho se p\u0159i jeho v\u00fdrob\u011b hojn\u011b pou\u017e\u00edv\u00e1 jako sou\u010d\u00e1st pojivov\u00fdch a povlakovan\u00fdch brusiv; nav\u00edc se hojn\u011b vyskytuje v pr\u016fmyslov\u00fdch procesech p\u0159i p\u0159esn\u00e9m lapov\u00e1n\u00ed a le\u0161t\u011bn\u00ed jako sou\u010d\u00e1st p\u0159esn\u00e9ho lapov\u00e1n\u00ed a le\u0161t\u011bn\u00ed.<\/p>\n
D\u00edky sv\u00e9 chemick\u00e9 stabilit\u011b a vysok\u00e9 \u017e\u00e1ruvzdornosti se karbid k\u0159em\u00edku ji\u017e dlouho pou\u017e\u00edv\u00e1 jako pr\u016fmyslov\u00fd materi\u00e1l p\u0159i v\u00fdrob\u011b abraziv a vysoce v\u00fdkonn\u00e9 keramiky. D\u00edky sv\u00e9 pevnosti p\u0159i vysok\u00fdch teplot\u00e1ch a p\u016fsobiv\u00e9 elektrick\u00e9 vodivosti nach\u00e1z\u00ed karbid k\u0159em\u00edku uplatn\u011bn\u00ed tak\u00e9 jako podp\u011bry pro z\u00e1sobn\u00edky desti\u010dek a lopatky v pec\u00edch na v\u00fdrobu polovodi\u010d\u016f - nemluv\u011b o odporov\u00fdch topn\u00fdch prvc\u00edch a teplotn\u011b prom\u011bnn\u00fdch rezistorech (termistorech).<\/p>\n
Karbid k\u0159em\u00edku v pr\u00e1\u0161ku se vyr\u00e1b\u00ed energeticky n\u00e1ro\u010dn\u00fdm Achesonov\u00fdm procesem, p\u0159i kter\u00e9m se k\u0159emi\u010dit\u00fd p\u00edsek a zdroje uhl\u00edku zah\u0159\u00edvaj\u00ed p\u0159i vysok\u00fdch teplot\u00e1ch, \u010d\u00edm\u017e doch\u00e1z\u00ed k jejich chemick\u00e9 reakci a vzniku krystalick\u00fdch krystal\u016f karbidu k\u0159em\u00edku, bu\u010f zelen\u00e9ho, nebo \u010dern\u00e9ho SiC (p\u0159i\u010dem\u017e \u010dern\u00fd SiC m\u00e1 obvykle ni\u017e\u0161\u00ed stupe\u0148 \u010distoty).<\/p>\n
Dal\u0161\u00edm \u00fa\u010dinn\u00fdm zp\u016fsobem p\u011bstov\u00e1n\u00ed kubick\u00e9ho SiC je chemick\u00e9 napa\u0159ov\u00e1n\u00ed, kter\u00e9 pou\u017e\u00edvaj\u00ed jak v\u00fdrobci, tak polovodi\u010dov\u00fd pr\u016fmysl. Touto technikou se z\u00edsk\u00e1vaj\u00ed vysoce kvalitn\u00ed monokrystaly 6H-SiC, kter\u00e9 maj\u00ed v\u00fdjime\u010dnou l\u00e1mavost i chemickou stabilitu.<\/p>\n
Karbid k\u0159em\u00edku (SiC) se ve srovn\u00e1n\u00ed s kovy vyzna\u010duje v\u00fdjime\u010dnou tepelnou vodivost\u00ed, d\u00edky n\u00ed\u017e si zachov\u00e1v\u00e1 pevnost, stabilitu a chemickou odolnost i za vysok\u00fdch teplot. Krom\u011b toho SiC poskytuje vynikaj\u00edc\u00ed odolnost proti opot\u0159eben\u00ed.<\/p>\n
V\u00fdroba SiC vy\u017eaduje zna\u010dn\u00e9 mno\u017estv\u00ed energie. Acheson\u016fv proces, kter\u00fd se obvykle pou\u017e\u00edv\u00e1 p\u0159i jeho v\u00fdrob\u011b, je energeticky n\u00e1ro\u010dn\u00fd. Sm\u00edch\u00e1n\u00edm oxidu k\u0159emi\u010dit\u00e9ho a koksu p\u0159ed jejich zah\u0159\u00e1t\u00edm na vysok\u00e9 teploty za \u00fa\u010delem chemick\u00e9 reakce vzniknou krystaly karbidu k\u0159em\u00edku, kter\u00e9 lze n\u00e1sledn\u011b rozeml\u00edt do r\u016fzn\u00fdch tvar\u016f a velikost\u00ed, aby spl\u0148ovaly po\u017eadavky pr\u016fmyslu.<\/p>\n
Pr\u00e1\u0161ek zelen\u00e9ho karbidu k\u0159em\u00edku je \u0161iroce vyu\u017e\u00edv\u00e1n v brusn\u00e9m pr\u016fmyslu pro \u0159ezn\u00e9 a brusn\u00e9 n\u00e1stroje, kter\u00e9 mus\u00ed b\u00fdt tvrd\u00e9 a z\u00e1rove\u0148 hou\u017eevnat\u00e9, a d\u00edky sv\u00fdm vlastnostem je obl\u00edben\u00fd jako p\u0159\u00edsada do vysoce v\u00fdkonn\u00e9 keramiky, kter\u00e9 dod\u00e1v\u00e1 pevnost, \u017e\u00e1ruvzdornost a podp\u011bry a lopatky pro desti\u010dky v pec\u00edch polovodi\u010dov\u00e9ho pr\u016fmyslu. Krom\u011b toho je d\u00edky sv\u00fdm vlastnostem elektrick\u00e9 vodivosti ide\u00e1ln\u00ed pro pou\u017eit\u00ed jako termistory a varistory, a to d\u00edky relativn\u011b \u010dist\u00fdm hranic\u00edm zrn v pevn\u00e9 f\u00e1zi slinut\u00e9ho SiC, kter\u00e9 se p\u0159i vysok\u00fdch teplot\u00e1ch snadno nedeformuj\u00ed.<\/p>\n
Karbid k\u0159em\u00edku (SiC), b\u011b\u017en\u011b ozna\u010dovan\u00fd jako karborundum, je brusn\u00fd materi\u00e1l b\u011b\u017en\u011b pou\u017e\u00edvan\u00fd k \u0159ez\u00e1n\u00ed a brou\u0161en\u00ed tvrd\u00fdch materi\u00e1l\u016f. Jako z\u00e1kladn\u00ed surovina p\u0159i v\u00fdrob\u011b \u017e\u00e1ruvzdorn\u00fdch materi\u00e1l\u016f pro pece, pece, kel\u00edmky i nepr\u016fst\u0159eln\u00e9 vestov\u00e9 keramick\u00e9 desky slou\u017e\u00ed jako brusn\u00e1 hlava i brusn\u00fd kotou\u010d.<\/p>\n
Vysok\u00e1 tvrdost podle Mohse 13 zaru\u010duje, \u017ee dob\u0159e odol\u00e1v\u00e1 n\u00e1raz\u016fm a vibrac\u00edm, tak\u017ee je vhodn\u00fd pro pou\u017eit\u00ed v prost\u0159ed\u00ed n\u00e1chyln\u00e9m k od\u011bru a po\u0161kozen\u00ed. Diamant a karbid b\u00f3ru z\u016fst\u00e1vaj\u00ed vynikaj\u00edc\u00edmi materi\u00e1ly, pokud jde o odolnost proti n\u00e1raz\u016fm, a poskytuj\u00ed v\u00e1m spolehlivou slu\u017ebu i v prost\u0159ed\u00ed s vysok\u00fdm tlakem, kde je pravd\u011bpodobn\u00e9 opot\u0159eben\u00ed.<\/p>\n
\u010cern\u00fd SiC je ide\u00e1ln\u00edm materi\u00e1lem pro p\u0159esn\u00e9 lapov\u00e1n\u00ed a le\u0161t\u011bn\u00ed a nab\u00edz\u00ed \u0159adu zrnitost\u00ed vhodn\u00fdch pro p\u0159esn\u00e9 aplikace. D\u00edky vysok\u00e9 \u010distot\u011b a p\u0159\u00edsn\u011b kontrolovan\u00e9mu rozlo\u017een\u00ed velikosti \u010d\u00e1stic poskytuje v\u017edy konzistentn\u00ed povrchovou \u00fapravu. Po nalepen\u00ed na potahovan\u00e9 brusn\u00e9 podklady, jako je brusn\u00fd pap\u00edr nebo tkanina, se z n\u011bj st\u00e1v\u00e1 \u00fa\u010dinn\u00fd brusn\u00fd blok, list nebo houba.<\/p>","protected":false},"excerpt":{"rendered":"
Pr\u00e1\u0161ky karbidu k\u0159em\u00edku Revolu\u010dn\u00ed vysokoteplotn\u00ed v\u00fdrobn\u00ed procesy Uvoln\u011bn\u00ed \u00fa\u017easn\u00fdch vlastnost\u00ed karbidu k\u0159em\u00edku (SiC). Suroviny pou\u017e\u00edvan\u00e9 k v\u00fdrob\u011b SiC proch\u00e1zej\u00ed p\u0159\u00edsn\u00fdmi procesy \u010di\u0161t\u011bn\u00ed a pot\u00e9 jsou rozemlety na jemn\u00e9 pr\u00e1\u0161ky pro dal\u0161\u00ed zpracov\u00e1n\u00ed. \u010cern\u00fd SiC je \u0161iroce vyu\u017e\u00edv\u00e1n pro pou\u017eit\u00ed v brusn\u00fdch aplikac\u00edch, jako jsou brusn\u00e9 kotou\u010de a \u0159ezn\u00e9 kotou\u010de, kter\u00e9 poskytuj\u00ed vysokou ... \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":[5],"tags":[],"class_list":["post-78","post","type-post","status-publish","format-standard","hentry","category-product"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/siliconcarbidepowders.com\/cs\/wp-json\/wp\/v2\/posts\/78","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=78"}],"version-history":[{"count":1,"href":"https:\/\/siliconcarbidepowders.com\/cs\/wp-json\/wp\/v2\/posts\/78\/revisions"}],"predecessor-version":[{"id":79,"href":"https:\/\/siliconcarbidepowders.com\/cs\/wp-json\/wp\/v2\/posts\/78\/revisions\/79"}],"wp:attachment":[{"href":"https:\/\/siliconcarbidepowders.com\/cs\/wp-json\/wp\/v2\/media?parent=78"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/siliconcarbidepowders.com\/cs\/wp-json\/wp\/v2\/categories?post=78"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/siliconcarbidepowders.com\/cs\/wp-json\/wp\/v2\/tags?post=78"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}