Silicio karbidas yra vis populiaresn\u0117 med\u017eiaga d\u0117l savo puiki\u0173 mechanini\u0173, \u0161ilumini\u0173 ir elektrini\u0173 savybi\u0173. Rekristalizuotas silicio karbidas d\u0117l savo mikrostrukt\u016bros pasi\u017eymi unikaliomis savyb\u0117mis.<\/p>\n
RSiC da\u017enai naudojamas krosni\u0173 baldams ir keramikos gaminiams, pavyzd\u017eiui, ugniai atsparioms med\u017eiagoms, dilimui atsparioms pramon\u0117s \u0161akoms ir pramonin\u0117ms auk\u0161tatemperat\u016br\u0117ms krosnims, nes pasi\u017eymi puikiu atsparumu korozijai ir atsparumu temperat\u016brai.<\/p>\n
Rekristalizuoto silicio karbido i\u0161skirtinis atsparumas auk\u0161toms temperat\u016broms lemia tai, kad jis yra puikus pasirinkimas med\u017eiagoms, kurios turi atlaikyti itin sud\u0117tingas aplinkos s\u0105lygas, kitaip nei keramika, kuri auk\u0161tesn\u0117je temperat\u016broje tampa ma\u017eiau tvirta. Be to, jo mikrostrukt\u016bra padeda atsispirti korozijai. Rekristalizuotas silicio karbidas naudojamas daugelyje pramon\u0117s sri\u010di\u0173, \u012fskaitant krosni\u0173 baldus, ritin\u0117lius \/ pa\u0161i\u016br\u0117s lentas \/ pa\u0161i\u016br\u0117s lentas \/ paklodes, taip pat \u0161arvo plok\u0161tes, naudojamas prie\u0161 dabartines ar kylan\u010dias balistines gr\u0117smes.<\/p>\n
Karborundo spaudos technika - giliaspaud\u0117s spausdinimo metodas, kuriam taip pat naudojamas karborundo sm\u0117lis. Sumai\u0161ius su vandeniu, kad susidaryt\u0173 pasta, ji u\u017etepama ant aliuminio plok\u0161t\u0117s, po to vandeniu nuvaloma nuo bet koki\u0173 neu\u017edengt\u0173 viet\u0173, paliekant galutin\u012f atspausdint\u0105 \u017eenkl\u0105, kuris v\u0117liau valcuojamas, kad b\u016bt\u0173 sukurtas galutinis produktas.<\/p>\n
Palyginti su oksidais suri\u0161tomis silicio karbido ugniai atspariomis med\u017eiagomis, nitridais suri\u0161tos ugniai atsparios med\u017eiagos pasi\u017eymi didesniu \u0161ilumos laidumu, didesniu atsparumu oksidacijai ir \u0161lak\u0173 susidarymui, atsparumu sm\u016bgiams ir sm\u016bgiams ir netgi gali b\u016bti naudojamos greitesnio degimo krosnyse, siekiant padidinti j\u0173 panaudojim\u0105 ir kartu suma\u017einti vieneto energijos s\u0105naudas.<\/p>\n
Silicio karbidas gali b\u016bti gaminamas \u012fvairiais metodais, \u012fskaitant reakcin\u012f sukepinim\u0105, be sl\u0117gio sukepint\u0105 silicio karbid\u0105 ir savaimin\u012f sukepinim\u0105. Reakcinio sukepinimo b\u016bdu gaunamos tankios med\u017eiagos, pasi\u017eymin\u010dios geru grynumu ir atsparumu terminiams sm\u016bgiams, ta\u010diau sunku kontroliuoti daleli\u0173 dyd\u012f. Boro karbidas, kaip anglies \u0161altinis, gali pad\u0117ti i\u0161vengti polimer\u0173 skilimo, kartu pa\u0161alinant poras \u017ealiuosiuose k\u016bnuose; sukepinimas skystoje faz\u0117je taip pat gali pagerinti gamybos greit\u012f.<\/p>\n
Rekristalizuotas silicio karbidas d\u0117l savo tvirtumo ir atsparumo korozijai derinio i\u0161siskiria kaip ideali dilimui atspari med\u017eiaga, tod\u0117l tinka chemini\u0173 siurbli\u0173 sandarikliams ir kitoms reiklioms aplinkoms. Be to, d\u0117l ma\u017eo \u0161iluminio pl\u0117timosi suma\u017e\u0117ja rizika d\u0117l staigi\u0173 au\u0161inimo \/ temperat\u016bros poky\u010di\u0173, o d\u0117l didelio kietumo jis tinka guoli\u0173 sistemose kaip guoli\u0173 komponentai - i\u0161 jo netgi gaminami \u012fvairi\u0173 form\u0173 purk\u0161tukai, pavyzd\u017eiui, sm\u0117liavimo sm\u0117liasrovei naudojami purk\u0161tukai, automobili\u0173 vandens siurbli\u0173 sandarikliai ir guoli\u0173 komponentai.<\/p>\n
RSiC yra puikus elektros izoliatorius, atlaikantis auk\u0161t\u0105 temperat\u016br\u0105, tod\u0117l tai puiki med\u017eiaga didel\u0117ms auk\u0161takrosn\u0117ms i\u0161kloti. Be to, d\u0117l atsparumo dilimui jis tinka vamzdynams, sparnuot\u0117ms ir ciklonams; \u0161iose srityse ketaus liejinys paprastai greitai d\u0117visi, o kalnakasyboje jis gerai atlaiko sm\u016bgius ir vibracijas.<\/p>\n
Su nitridais suri\u0161tas silicio karbidas pasi\u017eym\u0117jo i\u0161skirtiniu atsparumu dilimui lengvame dirvo\u017eemyje, kuriame yra biraus sm\u0117lio, ir penkis kartus pranoko plieno tipus, paprastai naudojamus dirvo\u017eemio darbin\u0117ms dalims. Nitridais suri\u0161tas silicio karbidas taip pat buvo daugiau nei \u0161e\u0161is kartus atsparesnis dilimui vidutinio sunkumo ir sunkiame dirvo\u017eemyje, tod\u0117l jis buvo geresn\u0117 med\u017eiaga suvirinimo sluoksniams dengti; jo atsparumas dilimui skyr\u0117si priklausomai nuo dirvo\u017eemio s\u0105lyg\u0173.<\/p>\n
RSiC pasi\u017eymi dideliu \u0161iluminiu laidumu, tod\u0117l yra puiki med\u017eiaga, tinkama naudoti auk\u0161toje temperat\u016broje. \u0160i\u0105 med\u017eiag\u0105, kuri gali atlaikyti iki 1600 laipsni\u0173 C temperat\u016br\u0105, o jos stiprumas i\u0161lieka pastovus, taip pat galima lengvai formuoti \u012f \u012fvairias formas, kad ji atitikt\u0173 konkre\u010dius poreikius - dirbant su \u0161ia med\u017eiaga galima naudoti tokius gamybos metodus kaip slydimo liejimas, i\u0161spaudimas ir \u012fpur\u0161kimas.<\/p>\n
RSiC pasi\u017eymi puikiu \u0161ilumos laidumu d\u0117l ma\u017eo tankio ir akytos strukt\u016bros, kuri leid\u017eia sulaikyti duj\u0173 faz\u0117s molekules, kad b\u016bt\u0173 i\u0161saugota \u0161iluma, ir kartu yra atspari tokiems korozijos procesams kaip oksidacija ar kiti korozijos procesai. Be to, \u0161i med\u017eiaga turi \u017eemesn\u0119 lydymosi temperat\u016br\u0105 nei dauguma technin\u0117s keramikos r\u016b\u0161i\u0173, tod\u0117l su ja saugiau dirbti.<\/p>\n
Tai puiki med\u017eiaga, kuri\u0105 galima formuoti pagal konkre\u010dius reikalavimus, tod\u0117l ji puikiai tinka naudoti tunelin\u0117se krosnyse, \"shuttle\" krosnyse, dvigub\u0173 ritini\u0173 krosnyse ir porceliano izoliatori\u0173 gamybos linijose. D\u0117l nedidelio svorio ir atsparumo auk\u0161toms temperat\u016broms ji yra puiki med\u017eiaga \u0161i\u0173 krosni\u0173 konstrukcij\u0173 r\u0117mams ne\u0161ti, be to, pasi\u017eymi puikiomis izoliacin\u0117mis savyb\u0117mis ir energijos taupymo galimyb\u0117mis.<\/p>\n
RSiC sukepinimo procesai skiriasi priklausomai nuo pasirinkto formavimo metodo. \u0160is procesas paprastai apima SiC milteli\u0173 ir ri\u0161amosios med\u017eiagos mi\u0161inio patalpinim\u0105 \u012f presform\u0105, po to karbotermin\u0119 redukcij\u0105, kad b\u016bt\u0173 gautas sukepintas k\u016bnas. Reakcinio suri\u0161imo b\u016bdu gaunami tank\u016bs gaminiai, o rekristalizacinio sukepinimo b\u016bdu - por\u0117ti gaminiai, tinkami naudoti auk\u0161toje temperat\u016broje.<\/p>\n
Silicio karbidas yra vis populiaresn\u0117 med\u017eiaga pramon\u0117je d\u0117l savo puiki\u0173 mechanini\u0173 ir elektrini\u0173 savybi\u0173, tod\u0117l puikiai tinka auk\u0161tos temperat\u016bros krosnims ir keramikos reikm\u0117ms. Rekristalizuoto silicio karbido ma\u017eas \u0161iluminio pl\u0117timosi koeficientas taip pat leid\u017eia j\u012f naudoti tokiose ekstremaliose temperat\u016brose, taip pat konstrukciniams komponentams, pavyzd\u017eiui, baldams ir ritin\u0117liams auk\u0161tos temperat\u016bros krosnyse.<\/p>\n
RSiC termin\u012f pl\u0117tim\u0105si lemia jo mikrostrukt\u016bra, sukepinimo procesas ir temperat\u016bra; temperat\u016bra ir med\u017eiagos tipas taip pat turi \u012ftakos. Formavimo metodai taip pat atlieka lemiam\u0105 vaidmen\u012f formuojant jo mikrostrukt\u016br\u0105 - nuo j\u0173 priklauso, kaip tarpusavyje susijungia med\u017eiagos gr\u016bdeliai, taip pat jos atsparumas terminiams sm\u016bgiams.<\/p>\n
Vienas geriausi\u0173 b\u016bd\u0173 \u012fvertinti RSiC \u0161ilumin\u012f pl\u0117tim\u0105si yra stereoskopinis mikroskopas, kurio rezultatai naudojami t\u016briniam pl\u0117timosi dyd\u017eiui apskai\u010diuoti, atsi\u017evelgiant \u012f konkre\u010dias s\u0105lygas, pagal tokias formules kaip \"av = Cv3BV\", kur Cv yra pastovus t\u016brio savitasis \u0161ilumingumas, Gruneisano parametras yra \"g\", o Vm - t\u016brinis modulis.<\/p>\n
RSiC pasi\u017eymi ne\u012fprasta mikrostrukt\u016bra, kuri\u0105 sudaro statmenos plok\u0161tel\u0117s, tarpusavyje sujungtos, kad b\u016bt\u0173 u\u017etikrintas did\u017eiausias mechaninis stiprumas, tvirtumas ir atsparumas korozijai. Be to, d\u0117l ma\u017eo \u0161iluminio pl\u0117timosi koeficiento ir ypatingo atsparumo \u0161iluminiam sm\u016bgiui RSiC yra patraukli med\u017eiaga auk\u0161tos temperat\u016bros aplinkoje.<\/p>","protected":false},"excerpt":{"rendered":"
Silicon carbide is an increasingly popular material due to its great mechanical, thermal and electrical properties. Recrystallized silicon carbide has unique properties due to its microstructure. RSiC is often utilized in kiln furniture and ceramic products such as refractories, wear-resistant industries and industrial high temperature kilns due to its excellent corrosion resistance and temperature resistance […]<\/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-80","post","type-post","status-publish","format-standard","hentry","category-knowledge"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/ceramicatijolart.com\/lt\/wp-json\/wp\/v2\/posts\/80","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ceramicatijolart.com\/lt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ceramicatijolart.com\/lt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ceramicatijolart.com\/lt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ceramicatijolart.com\/lt\/wp-json\/wp\/v2\/comments?post=80"}],"version-history":[{"count":1,"href":"https:\/\/ceramicatijolart.com\/lt\/wp-json\/wp\/v2\/posts\/80\/revisions"}],"predecessor-version":[{"id":81,"href":"https:\/\/ceramicatijolart.com\/lt\/wp-json\/wp\/v2\/posts\/80\/revisions\/81"}],"wp:attachment":[{"href":"https:\/\/ceramicatijolart.com\/lt\/wp-json\/wp\/v2\/media?parent=80"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ceramicatijolart.com\/lt\/wp-json\/wp\/v2\/categories?post=80"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ceramicatijolart.com\/lt\/wp-json\/wp\/v2\/tags?post=80"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}