Keramika z karbidu k\u0159em\u00edku je jedn\u00edm z nejtvrd\u0161\u00edch a nejpevn\u011bj\u0161\u00edch dostupn\u00fdch technick\u00fdch materi\u00e1l\u016f, kter\u00fd nach\u00e1z\u00ed \u0161irok\u00e9 uplatn\u011bn\u00ed v automobilov\u00e9m, stroj\u00edrensk\u00e9m a chemick\u00e9m pr\u016fmyslu.<\/p>\n
Spole\u010dnost Saint-Gobain Performance Ceramics & Refractories nab\u00edz\u00ed rozs\u00e1hl\u00fd v\u00fdb\u011br slinut\u00fdch, reak\u010dn\u011b pojen\u00fdch karbid\u016f k\u0159em\u00edku s kovovou matric\u00ed a karbid\u016f k\u0159em\u00edku s mullitovou vazbou s v\u00fdjime\u010dn\u00fdmi chemick\u00fdmi a mechanick\u00fdmi vlastnostmi p\u0159i teplot\u00e1ch do 1600 \u00b0C pro kone\u010dn\u00e9 pou\u017eit\u00ed. Tyto pln\u011b zhu\u0161t\u011bn\u00e9 v\u00fdrobky se mohou pochlubit vynikaj\u00edc\u00edmi chemick\u00fdmi a mechanick\u00fdmi vlastnostmi p\u0159i teplot\u00e1ch pro kone\u010dn\u00e9 pou\u017eit\u00ed ji\u017e od 150 stup\u0148\u016f Celsia.<\/p>\n
Karbid k\u0159em\u00edku je jedn\u00edm z nejleh\u010d\u00edch, nejtvrd\u0161\u00edch a nejpevn\u011bj\u0161\u00edch pokro\u010dil\u00fdch technick\u00fdch materi\u00e1l\u016f. Je toxikologicky nez\u00e1vadn\u00fd, odoln\u00fd proti ot\u011bru a m\u00e1 vynikaj\u00edc\u00ed mechanick\u00e9 vlastnosti ve srovn\u00e1n\u00ed s kovy, nap\u0159\u00edklad vysok\u00fd Young\u016fv modul a n\u00edzk\u00fd koeficient tepeln\u00e9 rozta\u017enosti.<\/p>\n
SiC je ide\u00e1ln\u00edm materi\u00e1lem, kter\u00fd spl\u0148uje n\u00e1ro\u010dn\u00e9 po\u017eadavky r\u016fzn\u00fdch pr\u016fmyslov\u00fdch odv\u011btv\u00ed a poskytuje tvrdost a modul pru\u017enosti pot\u0159ebn\u00e9 pro balistiku panc\u00ed\u0159e p\u0159i zlomku hmotnosti jin\u00fdch materi\u00e1l\u016f. \u010cerno\u0161ed\u00fd SiC nab\u00edz\u00ed ob\u011b vlastnosti sou\u010dasn\u011b, aby tuto v\u00fdzvu splnil.<\/p>\n
SSiC je vynikaj\u00edc\u00ed materi\u00e1l pro sou\u010d\u00e1sti odoln\u00e9 proti korozi a ot\u011bru, jako jsou t\u011bsn\u011bn\u00ed \u010derpadel a mechanick\u00e1 t\u011bsn\u011bn\u00ed, trysky pro trysk\u00e1n\u00ed a cyklony. Krom\u011b toho se tento tuh\u00fd materi\u00e1l s n\u00edzk\u00fdm koeficientem rozta\u017enosti osv\u011bd\u010dil jako optick\u00e1 zrcadla v teleskopech d\u00edky sv\u00e9 odolnosti v\u016f\u010di chemik\u00e1li\u00edm, opot\u0159eben\u00ed, oxidaci a pevnosti p\u0159i vysok\u00fdch teplot\u00e1ch.<\/p>\n
Karbid k\u0159em\u00edku je jedn\u00edm z nejleh\u010d\u00edch a nejtvrd\u0161\u00edch keramick\u00fdch materi\u00e1l\u016f. Je odoln\u00fd proti korozi a kyselin\u00e1m a louh\u016fm. Krom\u011b toho m\u00e1 vynikaj\u00edc\u00ed tepelnou vodivost a n\u00edzkou tepelnou rozta\u017enost, tak\u017ee je vhodn\u00fd pro vysok\u00e9 teploty i drsn\u00e9 prost\u0159ed\u00ed. D\u00edky sv\u00fdm pevnostn\u00edm vlastnostem je vynikaj\u00edc\u00ed volbou materi\u00e1lu pro trysky, lo\u017eiska, nepr\u016fst\u0159eln\u00e9 desky a podobn\u00e9 aplikace.<\/p>\n
Odolnost SiC proti korozi vypl\u00fdv\u00e1 z jeho tenk\u00e9 ochrann\u00e9 vrstvy, kter\u00e1 se vytv\u00e1\u0159\u00ed na jeho povrchu a vytv\u00e1\u0159\u00ed oxidovou bari\u00e9ru, kter\u00e1 br\u00e1n\u00ed p\u0159\u00edm\u00e9 interakci substr\u00e1tu s \u00fato\u010d\u00edc\u00edmi druhy, co\u017e vede k parabolick\u00e9 kinetice koroze. Obnoven\u00ed t\u00e9to oxidov\u00e9 bari\u00e9ry z\u00e1vis\u00ed na faktorech, jako jsou chemick\u00e9 druhy p\u0159\u00edtomn\u00e9 v \u00fato\u010d\u00edc\u00edm prost\u0159ed\u00ed a tak\u00e9 ne\u010distoty, pomocn\u00e9 l\u00e1tky p\u0159i sp\u00e9k\u00e1n\u00ed a f\u00e1ze na hranic\u00edch zrn p\u0159\u00edtomn\u00e9 v materi\u00e1lu substr\u00e1tu.<\/p>\n
P\u011bnov\u00e1 keramika se vyzna\u010duje rovnom\u011brn\u00fdm rozlo\u017een\u00edm p\u00f3r\u016f, vysokou p\u00f3rovitost\u00ed a specifick\u00fdm povrchem, selektivn\u00ed propustnost\u00ed pro kapaln\u00e1 a plynn\u00e1 m\u00e9dia, vynikaj\u00edc\u00edmi chemick\u00fdmi, elektrick\u00fdmi, magnetick\u00fdmi a optick\u00fdmi funkcemi, jako\u017e i vynikaj\u00edc\u00edmi chemick\u00fdmi, fyzik\u00e1ln\u00edmi, magnetick\u00fdmi a optick\u00fdmi funkcemi - vlastnostmi, kter\u00e9 z n\u00ed \u010din\u00ed ide\u00e1ln\u00ed materi\u00e1l pro v\u00fdrobky pracuj\u00edc\u00ed p\u0159i vysok\u00fdch teplot\u00e1ch, vysok\u00e9m tlaku nebo v extr\u00e9mn\u00edch prost\u0159ed\u00edch.<\/p>\n
Keramika z p\u011bnov\u00e9ho karbidu k\u0159em\u00edku se vyzna\u010duje vynikaj\u00edc\u00ed odolnost\u00ed proti oxidaci, tak\u017ee je vhodn\u00e1 pro pou\u017eit\u00ed ve stavebnictv\u00ed a v oboru polovodi\u010d\u016f ke konstrukci v\u00fdm\u011bn\u00edk\u016f tepla v\u0161eho druhu. Jejich speci\u00e1ln\u00ed prostorov\u00e1 s\u00ed\u0165ov\u00e1 struktura zlep\u0161uje tepelnou vodivost pro lep\u0161\u00ed p\u0159enos tepla.<\/p>\n
Karbid k\u0159em\u00edku je d\u00edky kombinaci mechanick\u00fdch vlastnost\u00ed a chemick\u00e9 odolnosti vyhled\u00e1van\u00fdm technick\u00fdm materi\u00e1lem. Odol\u00e1v\u00e1 korozi, ot\u011bru a erozi, zat\u00edmco jeho vysok\u00fd modul pru\u017enosti zaji\u0161\u0165uje rozm\u011brovou st\u00e1lost. Karbid k\u0159em\u00edku vynik\u00e1 tak\u00e9 jako adhezn\u00ed materi\u00e1l v \u010derpadlech, mechanick\u00fdch ucp\u00e1vk\u00e1ch a lo\u017eisc\u00edch, p\u0159i\u010dem\u017e z hlediska tribologick\u00fdch vlastnost\u00ed je na druh\u00e9m m\u00edst\u011b za diamantem a kubick\u00fdm nitridem b\u00f3ru.<\/p>\n
Keramika z karbidu k\u0159em\u00edku je tvrd\u00fd a teplotn\u011b odoln\u00fd materi\u00e1l, kter\u00fd je ide\u00e1ln\u00ed volbou pro pr\u016fmyslov\u00e9 aplikace. Jejich pevnost z\u016fst\u00e1v\u00e1 konstantn\u00ed i p\u0159i extr\u00e9mn\u011b vysok\u00fdch teplot\u00e1ch, proto\u017ee odol\u00e1vaj\u00ed n\u00e1ro\u010dn\u00fdm podm\u00ednk\u00e1m d\u00edky sn\u00ed\u017een\u00fdm koeficient\u016fm t\u0159en\u00ed, odolnosti proti korozi kyselinami a z\u00e1sadami a vynikaj\u00edc\u00ed chemick\u00e9 odolnosti.<\/p>\n
Opot\u0159eben\u00ed keramiky z karbidu k\u0159em\u00edku je d\u00e1no n\u011bkolika faktory, v\u010detn\u011b po\u010d\u00e1te\u010dn\u00ed drsnosti povrchu a chemick\u00fdch a mechanick\u00fdch vlastnost\u00ed materi\u00e1lu. Po\u010d\u00e1te\u010dn\u00ed drsnost povrchu ovliv\u0148uje tribologicky p\u0159em\u011bn\u011bn\u00e9 vytvo\u0159en\u00e9 strukturn\u00ed vrstvy, kter\u00e9 sni\u017euj\u00ed energii pot\u0159ebnou k aktivaci opot\u0159eben\u00ed a z\u00e1rove\u0148 sni\u017euj\u00ed produkci opot\u0159eben\u00fdch \u00falomk\u016f.<\/p>\n
P\u011bnov\u00e1 keramika m\u00e1 p\u0159irozen\u011b jednotnou trojrozm\u011brnou s\u00ed\u0165ovou strukturu a vyzna\u010duje se velk\u00fdm specifick\u00fdm povrchem, selektivn\u00ed propustnost\u00ed pro kapaln\u00e1 a plynn\u00e1 m\u00e9dia, vynikaj\u00edc\u00edmi tepeln\u00fdmi, elektrick\u00fdmi, magnetick\u00fdmi a optick\u00fdmi funkcemi a tepeln\u011b regula\u010dn\u00edmi vlastnostmi. Proto nach\u00e1zej\u00ed \u0161irok\u00e9 uplatn\u011bn\u00ed v nejr\u016fzn\u011bj\u0161\u00edch oblastech, jako je metalurgie, stroj\u00edrenstv\u00ed, dopravn\u00ed technika, n\u00e1rodn\u00ed obrana a ochrana \u017eivotn\u00edho prost\u0159ed\u00ed.<\/p>\n
Pokro\u010dil\u00e1 keramika m\u00e1 jedine\u010dn\u00e9 atomov\u00e9 slo\u017een\u00ed, kter\u00e9 j\u00ed umo\u017e\u0148uje z\u016fstat stabiln\u00ed p\u0159i vysok\u00fdch teplot\u00e1ch, zat\u00edmco jin\u00e9 materi\u00e1ly se p\u0159i zvy\u0161uj\u00edc\u00edch se teplot\u00e1ch rozp\u00ednaj\u00ed, jako nap\u0159\u00edklad nerezov\u00e1 ocel. Karbid k\u0159em\u00edku m\u00e1 m\u00e9n\u011b ne\u017e polovi\u010dn\u00ed koeficient tepeln\u00e9 rozta\u017enosti ne\u017e nerezov\u00e1 ocel.<\/p>\n
Jako takov\u00fd je ide\u00e1ln\u00edm materi\u00e1lem pro plynov\u00e9 t\u011bsnic\u00ed krou\u017eky, mechanick\u00e9 ucp\u00e1vky a lo\u017eiskov\u00e9 d\u00edly v petrochemick\u00fdch a leteck\u00fdch aplikac\u00edch, kde poskytuje odolnost proti korozi, oxidaci, chemick\u00e9mu opot\u0159eben\u00ed a tepeln\u00fdm \u0161ok\u016fm.<\/p>\n
Slinut\u00fd karbid k\u0159em\u00edku (SSiC) se vyzna\u010duje extr\u00e9mn\u00ed tvrdost\u00ed a vysok\u00fdm modulem pru\u017enosti, d\u00edky \u010demu\u017e je schopen spolehliv\u011b absorbovat energii n\u00e1razu a nab\u00edz\u00ed balistickou ochranu p\u0159i zna\u010dn\u00e9 \u00faspo\u0159e hmotnosti ve srovn\u00e1n\u00ed s kovov\u00fdmi sou\u010d\u00e1stmi.<\/p>","protected":false},"excerpt":{"rendered":"
Silicon carbide ceramic is one of the hardest and strongest engineering materials available, finding widespread application across automotive, mechanical 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":[5],"tags":[],"class_list":["post-78","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\/78","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=78"}],"version-history":[{"count":1,"href":"https:\/\/siliconcarbideceramic.net\/cs\/wp-json\/wp\/v2\/posts\/78\/revisions"}],"predecessor-version":[{"id":79,"href":"https:\/\/siliconcarbideceramic.net\/cs\/wp-json\/wp\/v2\/posts\/78\/revisions\/79"}],"wp:attachment":[{"href":"https:\/\/siliconcarbideceramic.net\/cs\/wp-json\/wp\/v2\/media?parent=78"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/siliconcarbideceramic.net\/cs\/wp-json\/wp\/v2\/categories?post=78"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/siliconcarbideceramic.net\/cs\/wp-json\/wp\/v2\/tags?post=78"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}