Rekristalizirani silicijev karbid (RSiC) je visoko zmogljiv kerami\u010dni material z odli\u010dnimi mehanskimi, toplotnimi in elektri\u010dnimi lastnostmi. Zaradi svoje edinstvene kombinacije lastnosti je idealen material za zahtevne aplikacije v razli\u010dnih industrijah, vklju\u010dno z letalsko, polprevodni\u0161ko in avtomobilsko. V tem \u010dlanku bomo raziskali lastnosti RSiC, njegov proizvodni postopek in uporabo v razli\u010dnih industrijah.<\/p>\n
Lastnosti rekristaliziranega silicijevega karbida
\nRSiC je kerami\u010dni material, sestavljen iz atomov silicija in ogljika v kristalni mre\u017ei. Nastane z rekristalizacijo prahu silicijevega karbida pri visokih temperaturah (>2200 \u00b0C) v vakuumu ali inertni atmosferi. Dobljeni material ima gostoto 2,6 g\/cm\u00b3, poroznost manj kot 1% in visoko stopnjo \u010distosti (>99,5%).<\/p>\n
Mehanske lastnosti:
\nRSiC ima odli\u010dne mehanske lastnosti, vklju\u010dno z visoko trdnostjo, \u017eilavostjo in trdoto. Njegov Youngov modul je pribli\u017eno 400 GPa, kar je ve\u010d kot pri jeklu, njegova lomna \u017eilavost pa je pribli\u017eno 4,5 MPa.m^0,5, kar je ve\u010d kot pri ve\u010dini keramike. Njegova trdota je pribli\u017eno 2400 Vickersov, kar ga uvr\u0161\u010da med najtr\u0161e znane keramike.<\/p>\n
Toplotne lastnosti:
\nRSiC ima izjemne toplotne lastnosti, vklju\u010dno z visoko toplotno prevodnostjo, nizkim toplotnim raztezkom in odli\u010dno odpornostjo na toplotne udarce. Njegova toplotna prevodnost je pribli\u017eno 100-150 W\/m.K, kar je ve\u010d kot pri ve\u010dini keramike in primerljivo s kovinami. Njegov koeficient toplotnega raztezanja je pribli\u017eno 4,5 x 10^-6\/K, kar je malo v primerjavi z drugimi kerami\u010dnimi materiali. Odpornost na toplotne udarce je posledica visoke toplotne prevodnosti in majhnega toplotnega raztezanja.<\/p>\n
Elektri\u010dne lastnosti:
\nRSiC ima dobre elektri\u010dne lastnosti, vklju\u010dno z visoko elektri\u010dno upornostjo in nizkimi dielektri\u010dnimi izgubami. Njegova elektri\u010dna upornost pri sobni temperaturi zna\u0161a pribli\u017eno 5 x 10^6 \u03a9.cm, zato je odli\u010den izolacijski material. Njegove dielektri\u010dne izgube so manj\u0161e od 0,01 pri frekvencah do 1 MHz, zato je primeren za visokofrekven\u010dne aplikacije.<\/p>\n
Proizvodni proces rekristaliziranega silicijevega karbida:
\nProizvodni proces RSiC vklju\u010duje ve\u010d korakov, med drugim:<\/p>\n
Izdelava zelenega telesa: Silicijev karbid v prahu se zme\u0161a z vezivom in z enoosnim ali izostati\u010dnim stiskanjem oblikuje v zeleno telo.<\/p>\n
Pred sintranjem: Zeleno telo je predhodno sintrano pri temperaturi pribli\u017eno 1650 \u00b0C, da dobi zadostno trdnost in togost za rokovanje.<\/p>\n
Oblikovanje: Z razli\u010dnimi tehnikami, kot so rezanje, bru\u0161enje in rezkanje, se zeleno telo, ki je predhodno sintrano, obdela v \u017eeleno obliko.<\/p>\n
Kon\u010dno sintranje: Obdelano zeleno telo se v vakuumu ali inertni atmosferi segreje na temperaturo > 2200 \u00b0C, da silicijev karbid v prahu rekristalizira in nastane gost in \u010dist material RSiC.<\/p>\n
Uporaba rekristaliziranega silicijevega karbida:
\nRSiC se uporablja v razli\u010dnih panogah, med drugim v:<\/p>\n
Letalska in vesoljska industrija: RSiC se uporablja kot lahek in visoko trdnostni material v vesoljskih strukturah, kot so lopatice turbin, \u0161obe raket in toplotni \u0161\u010ditniki.<\/p>\n
Polprevodnik: RSiC se uporablja kot lon\u010dek za proizvodnjo silicijevih plo\u0161\u010dic in kot material za podlago za rast plasti galijevega nitrida (GaN).<\/p>\n
Avtomobilska industrija: RSiC se zaradi visoke toplotne prevodnosti in nizke toplotne razteznosti uporablja kot material za zavorne kolute.<\/p>\n
Kemikalije: RSiC se uporablja kot material za obloge v visokotemperaturnih pe\u010deh in reaktorjih v kemi\u010dni industriji.<\/p>\n
Zaklju\u010dek:
\nRekristalizirani silicijev karbid je visoko zmogljiv kerami\u010dni material z odli\u010dnimi mehanskimi, toplotnimi in elektri\u010dnimi lastnostmi. Zaradi edinstvene kombinacije lastnosti je idealen material za zahtevne aplikacije v razli\u010dnih industrijah, vklju\u010dno z letalsko, polprevodni\u0161ko in avtomobilsko. Njegov proizvodni postopek vklju\u010duje ve\u010d korakov, vklju\u010dno z izdelavo zelenega telesa, predhodnim sintranjem, oblikovanjem in kon\u010dnim sintranjem. Na splo\u0161no je RSiC vsestranski material, ki lahko revolucionarno spremeni razli\u010dne industrije in utira pot novim tehnologijam.<\/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\/sl\/wp-json\/wp\/v2\/posts\/30","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mavigard.com\/sl\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mavigard.com\/sl\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mavigard.com\/sl\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mavigard.com\/sl\/wp-json\/wp\/v2\/comments?post=30"}],"version-history":[{"count":1,"href":"https:\/\/mavigard.com\/sl\/wp-json\/wp\/v2\/posts\/30\/revisions"}],"predecessor-version":[{"id":31,"href":"https:\/\/mavigard.com\/sl\/wp-json\/wp\/v2\/posts\/30\/revisions\/31"}],"wp:attachment":[{"href":"https:\/\/mavigard.com\/sl\/wp-json\/wp\/v2\/media?parent=30"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mavigard.com\/sl\/wp-json\/wp\/v2\/categories?post=30"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mavigard.com\/sl\/wp-json\/wp\/v2\/tags?post=30"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}