![\"Rekry\u0161talizovan\u00fd](\"http:\/\/siliconcarbideceramic.net\/wp-content\/uploads\/2024\/03\/Recrystallized-Silicon-Carbide.jpg\")
<\/p>","protected":false},"excerpt":{"rendered":"Karbid krem\u00edka je extr\u00e9mne tvrd\u00e1 keramika, ktor\u00e1 m\u00e1 vynikaj\u00facu teplotn\u00fa stabilitu a odolnos\u0165 proti kor\u00f3zii, v\u010faka \u010domu sa \u0161iroko vyu\u017e\u00edva v chemickom, metalurgickom a opotrebovate\u013enom priemysle.<\/p>\n
RSiC sa vyr\u00e1ba procesom odparovania a koagul\u00e1cie pri vysokej teplote a vyzna\u010duje sa otvorenou p\u00f3rovitos\u0165ou v rozsahu 11-15%, ve\u013ekou ve\u013ekos\u0165ou z\u0155n a \u017eiadnym zmr\u0161\u0165ovan\u00edm po\u010das procesu v\u00fdpalu.<\/p>\n
Rekry\u0161talizovan\u00fd karbid krem\u00edka sa od mnoh\u00fdch p\u00f3rovit\u00fdch keram\u00edk l\u00ed\u0161i t\u00fdm, \u017ee sa po\u010das v\u00fdpalu nezmen\u0161uje, \u010do umo\u017e\u0148uje vytv\u00e1ra\u0165 v\u00e4\u010d\u0161ie diely pri ni\u017e\u0161\u00edch energetick\u00fdch n\u00e1kladoch a v krat\u0161\u00edch v\u00fdrobn\u00fdch cykloch. Okrem toho tento materi\u00e1l odol\u00e1va tepeln\u00fdm \u0161okom, ako aj vysok\u00fdm teplot\u00e1m bez po\u0161kodenia jeho \u0161trukt\u00fary.<\/p>\n
Ve\u013ekos\u0165 p\u00f3rov a mikro\u0161trukt\u00fara zohr\u00e1vaj\u00fa neoddelite\u013en\u00fa \u00falohu pri ur\u010dovan\u00ed elektrick\u00e9ho odporu por\u00e9zneho karbidu krem\u00edka. Zmenou teploty spekania a nastavenia tlaku CIP mo\u017eno prisp\u00f4sobi\u0165 ve\u013ekos\u0165 p\u00f3rov \u0161peci\u00e1lne pre ur\u010dit\u00e9 aplik\u00e1cie, zatia\u013e \u010do \u00fapravy chemick\u00e9ho zlo\u017eenia umo\u017e\u0148uj\u00fa zodpovedaj\u00facim sp\u00f4sobom zmeni\u0165 jeho p\u00f3rovitos\u0165.<\/p>\n
Ve\u013ekos\u0165 p\u00f3rov mo\u017eno regulova\u0165 aj pomocou pr\u00edsad druhej f\u00e1zy, ako s\u00fa oxidy alebo silicidy. Manipul\u00e1ciou s faktormi, ktor\u00e9 ovplyv\u0148uj\u00fa elektrick\u00fd odpor v por\u00e9znom karbide krem\u00edka, sa m\u00f4\u017eu objavi\u0165 nov\u00e9 a zauj\u00edmav\u00e9 aplik\u00e1cie v mnoh\u00fdch oblastiach.<\/p>\n
Rekry\u0161talizovan\u00e1 keramika z karbidu krem\u00edka sa vyzna\u010duje pokro\u010dilou mikro\u0161trukt\u00farou, v\u010faka ktorej m\u00e1 v\u00fdnimo\u010dn\u00e9 mechanick\u00e9, tepeln\u00e9 a elektrick\u00e9 vlastnosti pri v\u0161etk\u00fdch teplot\u00e1ch vr\u00e1tane rozmerovej stability, odolnosti proti kor\u00f3zii a pevnosti aj pri extr\u00e9mnych teplot\u00e1ch. V\u010faka t\u00fdmto vlastnostiam je keramika RSiC vynikaj\u00facou vo\u013ebou na pou\u017eitie ako n\u00e1bytok pec\u00ed (ako s\u00fa tunelov\u00e9, raketopl\u00e1nov\u00e9 a dvojvalcov\u00e9 pece) alebo dokonca pancierov\u00e9 dosky proti \u00fatokom balistick\u00fdch striel.<\/p>\n
Karbid krem\u00edka (SiC) viazan\u00fd silik\u00e1tom, vyroben\u00fd z hrub\u00e9ho a stredne zrnit\u00e9ho SiC pr\u00e1\u0161ku spekan\u00e9ho s aluminosilik\u00e1tov\u00fdm spojivom 5-15%, m\u00e1 homog\u00e9nnu \u0161trukt\u00faru a vynikaj\u00facu pevnos\u0165 v ohybe; okrem toho vykazuje vynikaj\u00facu odolnos\u0165 proti oxid\u00e1cii. V porovnan\u00ed s t\u00fdm sa RSiC vyzna\u010duje homog\u00e9nnej\u0161ou \u0161trukt\u00farou s vy\u0161\u0161ou pevnos\u0165ou v ohybe, ako aj zv\u00fd\u0161enou odolnos\u0165ou vo\u010di oxid\u00e1cii.<\/p>\n
RSiC sa vyr\u00e1ba procesom odparovania a kondenz\u00e1cie, ktor\u00fd vytv\u00e1ra \u010distej\u0161\u00ed a hustej\u0161\u00ed materi\u00e1l ako \u0161tandardn\u00e9 procesy spekania pr\u00e1\u0161ku, \u010do znamen\u00e1, \u017ee na vyplnenie jeho p\u00f3rov je potrebn\u00e9 menej kovov\u00e9ho krem\u00edka, \u010d\u00edm sa zni\u017euje riziko praskania po\u010das spekania a z\u00e1rove\u0148 sa zabezpe\u010duje presnej\u0161ia geometria dielov v\u010faka tomu, \u017ee nedoch\u00e1dza k ich zmr\u0161\u0165ovaniu po\u010das infiltr\u00e1cie.<\/p>\n
Karbid krem\u00edka sa m\u00f4\u017ee pochv\u00e1li\u0165 vynikaj\u00facou chemickou stabilitou a odolnos\u0165ou vo\u010di tepeln\u00fdm \u0161okom s n\u00edzkym koeficientom roz\u0165a\u017enosti. Odol\u00e1va teplot\u00e1m a\u017e do 2 200 \u00b0C. V\u010faka tejto vysokej teplotnej stabilite je karbid krem\u00edka vynikaj\u00facou vo\u013ebou materi\u00e1lu pre energetick\u00e9 aplik\u00e1cie, ako s\u00fa jadrov\u00e9 reaktory alebo sol\u00e1rne elektr\u00e1rne.<\/p>\n
Reak\u010dn\u00e9 spekanie je jednou z najpou\u017e\u00edvanej\u0161\u00edch met\u00f3d v\u00fdroby keramiky, pri ktorej sa do pr\u00e1\u0161kov\u00e9ho oxidu kremi\u010dit\u00e9ho zmie\u0161avaj\u00fa at\u00f3my krem\u00edka a uhl\u00edka a vytv\u00e1ra sa keramick\u00fd materi\u00e1l s diamantovo tvrd\u00fdmi vlastnos\u0165ami a kompaktnou \u0161trukt\u00farou, z ktor\u00e9ho sa vyr\u00e1baj\u00fa r\u00f4zne tvarovan\u00e9 diely.<\/p>\n
Spolo\u010dnosti CoorsTek, Saint-Gobain Ceramic Materials, ESK-SIC GmbH a Fiven patria k l\u00eddrom na trhu v\u00fdroby rekry\u0161talizovan\u00e9ho karbidu krem\u00edka, pri\u010dom ka\u017ed\u00e1 z nich m\u00e1 vo svojom odvetv\u00ed dlh\u00fa hist\u00f3riu a zameriava sa na inov\u00e1cie. Hoci presn\u00e9 \u00fadaje o ich predaji nemusia by\u0165 verejne dostupn\u00e9, tieto firmy si udr\u017eiavaj\u00fa v\u00fdznamn\u00e9 postavenie na trhu a zdaj\u00fa sa ma\u0165 dobr\u00e9 predpoklady na to, aby v bud\u00facnosti pokra\u010dovali v expanzii.<\/p>\n
Karbid krem\u00edka sa m\u00f4\u017ee pochv\u00e1li\u0165 vynikaj\u00facou odolnos\u0165ou proti kor\u00f3zii v\u010faka svojej prirodzenej \u0161trukt\u00fare materi\u00e1lu pozost\u00e1vaj\u00facej zo vz\u00e1jomne sa prel\u00ednaj\u00facich doskovit\u00fdch z\u0155n, ktor\u00e9 prebiehaj\u00fa kolmo pozd\u013a\u017e jeho povrchu. Okrem toho jeho jedine\u010dn\u00e1 mikro\u0161trukt\u00fara poskytuje neprekonate\u013en\u00fa odolnos\u0165 vo\u010di er\u00f3zii\/oderu\/tepeln\u00fdm \u0161okom, ako aj rozmerov\u00fa stabilitu pri vy\u0161\u0161\u00edch teplot\u00e1ch; je to ide\u00e1lny materi\u00e1l na v\u00fdrobu n\u00e1bytku do pec\u00ed a in\u00e9 vysokoteplotn\u00e9 aplik\u00e1cie v priemysle.<\/p>\n
Rekry\u0161talizovan\u00fd karbid krem\u00edka sa m\u00f4\u017ee formova\u0165 pomocou procesov odlievania, vytl\u00e1\u010dania a vstrekovania, aby sa vyrobil materi\u00e1l s vynikaj\u00facou pevnos\u0165ou pri ve\u013emi vysok\u00fdch teplot\u00e1ch. V\u010faka svojej pevnosti je obzvl\u00e1\u0161\u0165 vhodn\u00fd na kon\u0161trukciu r\u00e1mov nosnej kon\u0161trukcie v tunelov\u00fdch peciach, kyvadlov\u00fdch peciach a peciach s ni\u017e\u0161\u00edm v\u00fdpalom, preto\u017ee umo\u017e\u0148uje odol\u00e1va\u0165 ve\u013emi vysok\u00fdm teplot\u00e1m a z\u00e1rove\u0148 zlep\u0161uje odolnos\u0165 v\u00fdmurovky pece vo\u010di oxid\u00e1cii a zni\u017euje spotrebu energie.<\/p>\n
Rekry\u0161talizovan\u00fd karbid krem\u00edka m\u00e1 tie\u017e ve\u013ek\u00fd potenci\u00e1l na v\u00fdrobu keramiky vystu\u017eenej kovmi, \u010do predstavuje \u00fa\u010dinn\u00fd sp\u00f4sob kombin\u00e1cie kovov a keramiky v modern\u00fdch technick\u00fdch komponentoch pou\u017e\u00edvan\u00fdch v sol\u00e1rnych elektr\u00e1r\u0148ach.<\/p>\n
<\/p>","protected":false},"excerpt":{"rendered":"
Silicon carbide is an extremely hard ceramic that possesses superior temperature stability and corrosion resistance, making it widely utilized across […]<\/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":"default","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":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","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-70","post","type-post","status-publish","format-standard","hentry","category-product-related"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/siliconcarbideceramic.net\/sk\/wp-json\/wp\/v2\/posts\/70","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/siliconcarbideceramic.net\/sk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/siliconcarbideceramic.net\/sk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/siliconcarbideceramic.net\/sk\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/siliconcarbideceramic.net\/sk\/wp-json\/wp\/v2\/comments?post=70"}],"version-history":[{"count":3,"href":"https:\/\/siliconcarbideceramic.net\/sk\/wp-json\/wp\/v2\/posts\/70\/revisions"}],"predecessor-version":[{"id":165,"href":"https:\/\/siliconcarbideceramic.net\/sk\/wp-json\/wp\/v2\/posts\/70\/revisions\/165"}],"wp:attachment":[{"href":"https:\/\/siliconcarbideceramic.net\/sk\/wp-json\/wp\/v2\/media?parent=70"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/siliconcarbideceramic.net\/sk\/wp-json\/wp\/v2\/categories?post=70"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/siliconcarbideceramic.net\/sk\/wp-json\/wp\/v2\/tags?post=70"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}