Rekristalizuotas silicio karbidas (RSiC) yra auk\u0161tos kokyb\u0117s keramin\u0117 med\u017eiaga, pasi\u017eyminti puikiomis mechanin\u0117mis, \u0161ilumin\u0117mis ir elektrin\u0117mis savyb\u0117mis. D\u0117l unikalaus savybi\u0173 derinio tai ideali med\u017eiaga, tinkanti sud\u0117tingoms reikm\u0117ms \u012fvairiose pramon\u0117s \u0161akose, \u012fskaitant aviacijos, puslaidininki\u0173 ir automobili\u0173 pramon\u0119. \u0160iame straipsnyje nagrin\u0117sime RSiC savybes, jos gamybos proces\u0105 ir taikym\u0105 \u012fvairiose pramon\u0117s \u0161akose.<\/p>\n
Rekristalizuoto silicio karbido savyb\u0117s
\nRSiC yra keramin\u0117 med\u017eiaga, sudaryta i\u0161 silicio ir anglies atom\u0173 kristalin\u0117je gardel\u0117je. Ji susidaro rekristalizuojant silicio karbido miltelius auk\u0161toje temperat\u016broje (>2200 \u00b0C) vakuume arba inertin\u0117je atmosferoje. Gautos med\u017eiagos tankis yra 2,6 g\/cm\u00b3, akytumas ma\u017eesnis nei 1%, o grynumas didelis (>99,5%).<\/p>\n
Mechanin\u0117s savyb\u0117s:
\nRSiC pasi\u017eymi puikiomis mechanin\u0117mis savyb\u0117mis, \u012fskaitant didel\u012f stiprum\u0105, tvirtum\u0105 ir kietum\u0105. Jo Jono modulis yra ma\u017edaug 400 GPa, t. y. didesnis u\u017e plieno modul\u012f, o jo atsparumas l\u016b\u017eiams yra ma\u017edaug 4,5 MPa.m^0,5, t. y. geresnis u\u017e daugumos keramini\u0173 med\u017eiag\u0173 atsparum\u0105. Jos kietumas yra apie 2400 Vikerso, tod\u0117l ji yra viena i\u0161 kie\u010diausi\u0173 \u017einom\u0173 keramik\u0173.<\/p>\n
\u0160ilumin\u0117s savyb\u0117s:
\nRSiC pasi\u017eymi i\u0161skirtin\u0117mis \u0161ilumin\u0117mis savyb\u0117mis, \u012fskaitant didel\u012f \u0161ilumos laidum\u0105, ma\u017e\u0105 \u0161ilumin\u012f pl\u0117tim\u0105si ir puik\u0173 atsparum\u0105 \u0161iluminiam sm\u016bgiui. Jo \u0161ilumos laidumas yra apie 100-150 W\/m.K, t. y. didesnis nei daugumos keramikos ir pana\u0161us \u012f metal\u0173. Jo \u0161iluminio pl\u0117timosi koeficientas yra apie 4,5 x 10^-6\/K, t. y. ma\u017eas, palyginti su kita keramika. Atsparum\u0105 terminiam sm\u016bgiui lemia didelis \u0161ilumos laidumas ir ma\u017eas \u0161iluminis pl\u0117timasis.<\/p>\n
Elektrin\u0117s savyb\u0117s:
\nRSiC pasi\u017eymi geromis elektrin\u0117mis savyb\u0117mis, \u012fskaitant didel\u0119 elektrin\u0119 var\u017e\u0105 ir ma\u017eus dielektrinius nuostolius. Jo elektrin\u0117 var\u017ea kambario temperat\u016broje yra apie 5 x 10^6 \u03a9.cm, tod\u0117l jis yra puiki izoliacin\u0117 med\u017eiaga. Jos dielektriniai nuostoliai yra ma\u017eesni nei 0,01, kai da\u017enis nevir\u0161ija 1 MHz, tod\u0117l ji tinka auk\u0161to da\u017enio taikymams.<\/p>\n
Rekristalizuoto silicio karbido gamybos procesas:
\nRSiC gamybos proces\u0105 sudaro keli etapai, \u012fskaitant:<\/p>\n
\u017dalios spalvos korpuso gamyba: Silicio karbido milteliai sumai\u0161omi su ri\u0161am\u0105ja med\u017eiaga ir viena\u0161io arba izostatinio presavimo b\u016bdu suformuojamas \u017ealias k\u016bnas.<\/p>\n
Prie\u0161 sukepinim\u0105: \u017daliasis korpusas i\u0161 anksto sukepinamas ma\u017edaug 1650 \u00b0C temperat\u016broje, kad b\u016bt\u0173 pakankamai tvirtas ir standus.<\/p>\n
Formavimas: I\u0161 anksto sukepintas \u017ealias korpusas apdirbamas iki norimos formos naudojant \u012fvairius metodus, pavyzd\u017eiui, pjovim\u0105, \u0161lifavim\u0105 ir frezavim\u0105.<\/p>\n
Galutinis sukepinimas: Vakuume arba inertin\u0117je atmosferoje apdirbtas \u017ealias korpusas kaitinamas iki > 2200 \u00b0C temperat\u016bros, kad silicio karbido milteliai persikristalizuot\u0173 ir b\u016bt\u0173 gauta tanki ir gryna RSiC med\u017eiaga.<\/p>\n
Rekristalizuoto silicio karbido panaudojimas:
\nRSiC gali b\u016bti pla\u010diai naudojamas \u012fvairiose pramon\u0117s \u0161akose, \u012fskaitant:<\/p>\n
Aviacija ir kosmosas: RSiC naudojama kaip lengva ir didelio stiprumo med\u017eiaga aerokosmin\u0117se konstrukcijose, pavyzd\u017eiui, turbin\u0173 ment\u0117se, raket\u0173 antgaliuose ir \u0161iluminiuose skyduose.<\/p>\n
Puslaidininkis: RSiC naudojamas kaip tiglio med\u017eiaga silicio plok\u0161tel\u0117ms gaminti ir kaip substrato med\u017eiaga galio nitrido (GaN) pl\u0117vel\u0117ms auginti.<\/p>\n
Automobiliai: RSiC naudojama kaip stabd\u017ei\u0173 disk\u0173 med\u017eiaga d\u0117l didelio \u0161ilumos laidumo ir ma\u017eo \u0161iluminio pl\u0117timosi.<\/p>\n
Chemin\u0117s med\u017eiagos: RSiC naudojamas kaip chemijos pramon\u0117s auk\u0161tatemperat\u016bri\u0173 krosni\u0173 ir reaktori\u0173 pamu\u0161alo med\u017eiaga.<\/p>\n
I\u0161vados:
\nRekristalizuotas silicio karbidas yra auk\u0161tos kokyb\u0117s keramin\u0117 med\u017eiaga, pasi\u017eyminti puikiomis mechanin\u0117mis, \u0161ilumin\u0117mis ir elektrin\u0117mis savyb\u0117mis. D\u0117l unikalaus savybi\u0173 derinio jis yra ideali med\u017eiaga, tinkanti sud\u0117tingoms reikm\u0117ms \u012fvairiose pramon\u0117s \u0161akose, \u012fskaitant aviacijos, puslaidininki\u0173 ir automobili\u0173 pramon\u0119. Jos gamybos procesas apima kelis etapus, \u012fskaitant \u017ealio korpuso gamyb\u0105, i\u0161ankstin\u012f sukepinim\u0105, formavim\u0105 ir galutin\u012f sukepinim\u0105. Apskritai RSiC yra universali med\u017eiaga, galinti sukelti revoliucij\u0105 \u012fvairiose pramon\u0117s \u0161akose ir nutiesti keli\u0105 naujoms technologijoms.<\/p>","protected":false},"excerpt":{"rendered":"
Recrystallized Silicon Carbide: A High-Performance Material for Demanding Applications Recrystallized Silicon Carbide (RSiC) is a high-performance ceramic material with excellent mechanical, thermal, and electrical properties. Its unique combination of properties makes it an ideal material for demanding applications in various industries, including aerospace, semiconductor, and automotive. In this article, we will explore the properties of […]<\/p>","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-opacity":"","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-opacity":"","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-opacity":"","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-opacity":"","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-opacity":"","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-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[2],"tags":[],"class_list":["post-30","post","type-post","status-publish","format-standard","hentry","category-product-related"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/mavigard.com\/lt\/wp-json\/wp\/v2\/posts\/30","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mavigard.com\/lt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mavigard.com\/lt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mavigard.com\/lt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mavigard.com\/lt\/wp-json\/wp\/v2\/comments?post=30"}],"version-history":[{"count":1,"href":"https:\/\/mavigard.com\/lt\/wp-json\/wp\/v2\/posts\/30\/revisions"}],"predecessor-version":[{"id":31,"href":"https:\/\/mavigard.com\/lt\/wp-json\/wp\/v2\/posts\/30\/revisions\/31"}],"wp:attachment":[{"href":"https:\/\/mavigard.com\/lt\/wp-json\/wp\/v2\/media?parent=30"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mavigard.com\/lt\/wp-json\/wp\/v2\/categories?post=30"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mavigard.com\/lt\/wp-json\/wp\/v2\/tags?post=30"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}