{"id":154,"date":"2022-10-24T18:46:27","date_gmt":"2022-10-24T10:46:27","guid":{"rendered":"https:\/\/advance-ceramics.com\/?p=154"},"modified":"2023-08-18T12:50:29","modified_gmt":"2023-08-18T04:50:29","slug":"reakcne-vazany-karbid-kremiku","status":"publish","type":"post","link":"https:\/\/advance-ceramics.com\/cs\/reaction-bonded-silicon-carbide\/","title":{"rendered":"Reak\u010dn\u011b v\u00e1zan\u00fd karbid k\u0159em\u00edku"},"content":{"rendered":"

Reak\u010dn\u011b v\u00e1zan\u00fd karbid k\u0159em\u00edku (sisic) je typ karbidov\u00e9 keramiky, kter\u00e1 se vyr\u00e1b\u00ed chemickou reakc\u00ed mezi por\u00e9zn\u00edm uhl\u00edkem a roztaven\u00fdm k\u0159em\u00edkem. Jedn\u00e1 se o pevn\u00fd, odoln\u00fd a lehk\u00fd materi\u00e1l, kter\u00fd se pou\u017e\u00edv\u00e1 pro r\u016fzn\u00e9 aplikace. Tento materi\u00e1l se b\u011b\u017en\u011b pou\u017e\u00edv\u00e1 v elektronick\u00fdch za\u0159\u00edzen\u00edch, pec\u00edch, d\u016fln\u00edm pr\u016fmyslu atd. Chcete-li se o RBSiC dozv\u011bd\u011bt v\u00edce, v tomto \u010dl\u00e1nku naleznete p\u0159ehled procesu pou\u017e\u00edvan\u00e9ho k v\u00fdrob\u011b tohoto materi\u00e1lu a jeho pou\u017eit\u00ed.<\/p>\n

sisic je alternativou krystalick\u00e9ho k\u0159em\u00edku a lze jej pou\u017e\u00edt pro \u0159adu aplikac\u00ed. Mezi jeho vlastnosti pat\u0159\u00ed vysok\u00e1 tvrdost, vysok\u00e1 odolnost proti opot\u0159eben\u00ed a n\u00edzk\u00fd koeficient t\u0159en\u00ed. Je vhodn\u00fd i pro b\u011b\u017en\u00e9 pracovn\u00ed podm\u00ednky, i kdy\u017e nen\u00ed vhodn\u00fd do prost\u0159ed\u00ed s v\u00fdskytem siln\u00fdch alk\u00e1li\u00ed nebo fluorovod\u00edkov\u00fdch kyselin. Materi\u00e1l se vyr\u00e1b\u00ed reakc\u00ed k\u0159em\u00edku a uhl\u00edku ve vakuov\u00e9 sp\u00e9kac\u00ed peci p\u0159i teplot\u011b 1500 stup\u0148\u016f Fahrenheita. reakc\u00ed v\u00e1zan\u00fd sik reaguje s pojivem za vzniku slitiny, kter\u00e1 m\u00e1 vynikaj\u00edc\u00ed keramick\u00e9 vlastnosti. Slo\u017een\u00ed keramick\u00fdch \u010dlen\u016f z karbidu k\u0159em\u00edku se m\u016f\u017ee li\u0161it podle obsahu pojiva a k\u0159em\u00edku. V\u00fdhodn\u00e1 je sm\u011bs \u010d\u00e1stic karbidu k\u0159em\u00edku a pojiva v pom\u011bru p\u0159ibli\u017en\u011b 100:3. Reak\u010dn\u011b v\u00e1zan\u00fd karbid k\u0159em\u00edku je vysoce univerz\u00e1ln\u00ed materi\u00e1l, kter\u00fd m\u00e1 jedine\u010dn\u00e9 mechanick\u00e9 a tepeln\u00e9 vlastnosti. Je ide\u00e1ln\u00ed pro \u0161irokou \u0161k\u00e1lu aplikac\u00ed, od vysokonap\u011b\u0165ov\u00fdch nap\u00e1jec\u00edch zdroj\u016f pro elektrick\u00e1 vozidla, st\u0159\u00edda\u010de pro zelenou energii, pr\u016fmyslov\u00e9 pohony motor\u016f a inteligentn\u00ed s\u00edt\u011b.<\/p>\n

Studie rovn\u011b\u017e zkoumala vliv mikro a nano uhl\u00edkat\u00fdch pr\u00e1\u0161k\u016f na rychlost \u00fab\u011bru materi\u00e1lu, jisk\u0159i\u0161t\u011b a drsnost povrchu. Tyto t\u0159i faktory jsou hlavn\u00edmi faktory, kter\u00e9 ovliv\u0148uj\u00ed drsnost povrchu reak\u010dn\u011b v\u00e1zan\u00e9ho karbidu k\u0159em\u00edku. Krom\u011b velikosti hraje d\u016fle\u017eitou roli v rychlosti \u00fab\u011bru materi\u00e1lu tak\u00e9 koncentrace uhl\u00edkov\u00fdch pr\u00e1\u0161k\u016f. keramika z karbidu k\u0159em\u00edku je velmi pevn\u00fd a odoln\u00fd materi\u00e1l, kter\u00fd nab\u00edz\u00ed vynikaj\u00edc\u00ed odolnost proti opot\u0159eben\u00ed a vysokou pevnost. Krom\u011b toho je rbsic lehk\u00fd materi\u00e1l a je velmi cenov\u011b v\u00fdhodn\u00fd. D\u00edky sv\u00fdm vynikaj\u00edc\u00edm mechanick\u00fdm vlastnostem je ide\u00e1ln\u00ed pro pr\u016fmyslov\u00e9 aplikace. Krom\u011b pevnosti m\u00e1 reak\u010dn\u011b v\u00e1zan\u00fd karbid k\u0159em\u00edku tak\u00e9 vynikaj\u00edc\u00ed tepelnou a korozn\u00ed odolnost. velikost \u010d\u00e1stic pojiva pou\u017eit\u00e9ho v tomto vyn\u00e1lezu je s v\u00fdhodou v rozmez\u00ed 5 mm a\u017e 50 mm, co\u017e zabra\u0148uje \u0161patn\u00e9mu prom\u00edch\u00e1n\u00ed s \u010d\u00e1sticemi karbidu k\u0159em\u00edku. Pr\u016fm\u011br \u010d\u00e1stic se m\u011b\u0159\u00ed pomoc\u00ed laserov\u00e9ho difrak\u010dn\u00edho rozptylu. V\u00fdsledn\u00fd produkt m\u00e1 granul\u00e1rn\u00ed strukturu, kter\u00e1 je vhodn\u00e1 pro pln\u011bn\u00ed v r\u016fzn\u00fdch aplikac\u00edch. reak\u010dn\u00ed pojivo sic bylo studov\u00e1no pomoc\u00ed SEM a dal\u0161\u00edch metod. Vzorek byl p\u0159ipraven vytvo\u0159en\u00edm t\u0159\u00ed vzork\u016f, ka\u017ed\u00fd za t\u0159\u00ed podm\u00ednek p\u00e1jen\u00ed. N\u00e1sledn\u011b byl charakterizov\u00e1n lomov\u00fd povrch pomoc\u00ed rastrovac\u00edho elektronov\u00e9ho mikroskopu (SEM). anal\u00fdza SEM p\u00e1jen\u00e9ho spoje SiC\/Zr4 uk\u00e1zala, \u017ee amorfn\u00ed plnivo TiZrNiCu je schopno spojovat slitinu SiC a Zr4. P\u00e1jen\u00fd spoj vykazoval f\u00e1zi b-Ti, kter\u00e1 je pravd\u011bpodobn\u011b zp\u016fsobena p\u0159\u00edtomnost\u00ed Ni a Cu ve slou\u010denin\u011b.<\/p>\n

D\u00edky sv\u00fdm jedine\u010dn\u00fdm mechanick\u00fdm a tepeln\u00fdm vlastnostem je sisic \u017e\u00e1dan\u00fdm materi\u00e1lem pro celou \u0159adu aplikac\u00ed, od vysokonap\u011b\u0165ov\u00fdch nap\u00e1jec\u00edch zdroj\u016f a\u017e po elektromobily, st\u0159\u00edda\u010de pro zelenou energii, pr\u016fmyslov\u00e9 motorov\u00e9 pohony a inteligentn\u00ed s\u00edt\u011b. Tento materi\u00e1l se osv\u011bd\u010dil v nejn\u00e1ro\u010dn\u011bj\u0161\u00edch prost\u0159ed\u00edch. chemick\u00e9 slo\u017een\u00ed reak\u010dn\u011b v\u00e1zan\u00e9ho karbidu k\u0159em\u00edku reaguje s mal\u00fdm mno\u017estv\u00edm karbidu k\u0159em\u00edku za vzniku pevn\u00e9ho keramick\u00e9ho materi\u00e1lu. Tento materi\u00e1l je pevn\u00fd a je schopen absorbovat vysok\u00e9 mno\u017estv\u00ed tepla. Vysok\u00e1 tepeln\u00e1 a oxida\u010dn\u00ed odolnost tohoto materi\u00e1lu z n\u011bj \u010din\u00ed slibn\u00fd termostrukturn\u00ed materi\u00e1l pro pou\u017eit\u00ed ve vysokoteplotn\u00edch sou\u010d\u00e1stk\u00e1ch. Pokud se v\u0161ak maj\u00ed vyr\u00e1b\u011bt velk\u00e9 sou\u010d\u00e1sti, je k tomu nutn\u00e9 pou\u017e\u00edt spojovac\u00ed technologie. Techniky dif\u00fazn\u00edho spojov\u00e1n\u00ed obecn\u011b vyu\u017e\u00edvaj\u00ed ke spojov\u00e1n\u00ed sou\u010d\u00e1st\u00ed kovov\u00e9 mezivrstvy. Tyto metody v\u0161ak neumo\u017e\u0148uj\u00ed detailn\u00ed pozorov\u00e1n\u00ed mikrostruktury lepen\u00e9 oblasti. Abychom tento probl\u00e9m vy\u0159e\u0161ili, pou\u017eili jsme k p\u0159\u00edprav\u011b TEM vzork\u016f z lepen\u00fdch oblast\u00ed syst\u00e9m fokusovan\u00e9ho iontov\u00e9ho svazku. reak\u010dn\u00ed lepen\u00ed RB-SiC je vysoce univerz\u00e1ln\u00ed technologie, kter\u00e1 dok\u00e1\u017ee vytvo\u0159it por\u00e9zn\u00ed vrstvy keramiky z karbidu k\u0159em\u00edku na hust\u00e9m substr\u00e1tu. D\u00edky procesu lept\u00e1n\u00ed vykazuje tento materi\u00e1l vysokou selektivitu dopantu. Pro v\u00edcevrstv\u00e9 vrstvy karbidu k\u0159em\u00edku se nav\u00edc pou\u017e\u00edv\u00e1 dvoustup\u0148ov\u00fd postup lept\u00e1n\u00ed. sisick\u00fd proces zahrnuje reakci dvou nebo v\u00edce kus\u016f karbidu k\u0159em\u00edku s tenkou mezivrstvou TiC\/Si p\u00e1sky. Tyto materi\u00e1ly se pot\u00e9 zah\u0159ej\u00ed mikrovlnami na teplotu, p\u0159i n\u00ed\u017e prob\u00edhaj\u00ed vyt\u011bs\u0148ovac\u00ed reakce v pevn\u00e9m stavu.<\/p>\n

\"Reak\u010dn\u011b<\/a><\/p>","protected":false},"excerpt":{"rendered":"

Reaction bonded silicon carbide, or sisic, is a type of silicon carbide ceramic that is manufactured through a chemical reaction between porous carbon and molten silicon. It is a strong, durable, and lightweight material that is used for a variety of applications. This material is commonly used in electronic equipment,kiln,mining and so on. To learn… \u010c\u00edst d\u00e1le »Reak\u010dn\u011b v\u00e1zan\u00fd karbid k\u0159em\u00edku<\/span><\/a><\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"off","neve_meta_content_width":70,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","footnotes":""},"categories":[14],"tags":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/advance-ceramics.com\/cs\/wp-json\/wp\/v2\/posts\/154"}],"collection":[{"href":"https:\/\/advance-ceramics.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/advance-ceramics.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/advance-ceramics.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/advance-ceramics.com\/cs\/wp-json\/wp\/v2\/comments?post=154"}],"version-history":[{"count":7,"href":"https:\/\/advance-ceramics.com\/cs\/wp-json\/wp\/v2\/posts\/154\/revisions"}],"predecessor-version":[{"id":207,"href":"https:\/\/advance-ceramics.com\/cs\/wp-json\/wp\/v2\/posts\/154\/revisions\/207"}],"wp:attachment":[{"href":"https:\/\/advance-ceramics.com\/cs\/wp-json\/wp\/v2\/media?parent=154"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/advance-ceramics.com\/cs\/wp-json\/wp\/v2\/categories?post=154"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/advance-ceramics.com\/cs\/wp-json\/wp\/v2\/tags?post=154"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}