A szil\u00edciumkarbid (SiC) egy rendk\u00edv\u00fcl kem\u00e9ny, szil\u00edciumb\u00f3l \u00e9s sz\u00e9nb\u0151l \u00e1ll\u00f3 k\u00e9miai vegy\u00fclet, amely f\u00e9lvezet\u0151 eszk\u00f6z\u00f6ket alkot, \u00e9s kem\u00e9ny ker\u00e1miaanyagokk\u00e1 alak\u00edthat\u00f3 olyan alkalmaz\u00e1sokhoz, amelyek nagy tart\u00f3ss\u00e1got ig\u00e9nyelnek, mint p\u00e9ld\u00e1ul az aut\u00f3f\u00e9kek \u00e9s a goly\u00f3\u00e1ll\u00f3 mell\u00e9nyek.<\/p>\n
A SiC sz\u00e9les k\u00f6rben elismert kiv\u00e1l\u00f3 h\u0151vezet\u0151 k\u00e9pess\u00e9ge miatt. Itt a 3C-SiC h\u0151vezet\u0151 k\u00e9pess\u00e9ge, f\u00e1zis\u00f6sszet\u00e9tele \u00e9s mikroszerkezete k\u00f6z\u00f6tti kapcsolatot vizsg\u00e1ljuk.<\/p>\n
A szil\u00edcium-karbid ker\u00e1mia az egyik legkem\u00e9nyebb, leger\u0151sebb \u00e9s h\u0151\u00e1ll\u00f3 ker\u00e1mia a piacon. Ezenk\u00edv\u00fcl korr\u00f3zi\u00f3\u00e1ll\u00f3s\u00e1ga \u00e9s h\u0151vezet\u0151 tulajdons\u00e1gai alkalmass\u00e1 teszik v\u00e1g\u00f3szersz\u00e1mokhoz, k\u00f6sz\u00f6r\u0171korongokhoz \u00e9s csiszol\u00f3anyagokhoz, kop\u00e1s\u00e1ll\u00f3 alkatr\u00e9szekhez, p\u00e9ld\u00e1ul magas h\u0151m\u00e9rs\u00e9klet\u0171 szivatty\u00fak t\u00f6m\u00edt\u0151fel\u00fcleteihez \u00e9s f\u00e9lvezet\u0151 szubsztr\u00e1tumokhoz.<\/p>\n
A nagy tisztas\u00e1g\u00fa SiC rendk\u00edv\u00fcl magas h\u0151vezet\u0151 k\u00e9pess\u00e9ggel rendelkezik - a gy\u00e9m\u00e1nt\u00e9hoz hasonl\u00f3 \u00e9s a r\u00e9z\u00e9n\u00e9l magasabb! Az alacsony h\u0151t\u00e1gul\u00e1s \u00e9s a magas h\u0151vezet\u0151 k\u00e9pess\u00e9g kiv\u00e1l\u00f3 t\u0171z\u00e1ll\u00f3 anyagg\u00e1 teszi.<\/p>\n
A GNP-ket sikeresen integr\u00e1lt\u00e1k s\u0171r\u0171 szil\u00edciumkarbidba folyad\u00e9kf\u00e1zis\u00fa szikraplazma-szinterez\u00e9ssel, Y2O3 \u00e9s Al2O3 szinterez\u00e9si seg\u00e9danyagokat haszn\u00e1lva, \u00e9s be\u00e9p\u00edt\u00e9s\u00fck nagy termikus anizotr\u00f3pi\u00e1t eredm\u00e9nyezett, az ab-s\u00edkbeli termikus diff\u00fazi\u00f3s k\u00e9pess\u00e9g 30%-vel n\u0151tt az SPS pr\u00e9stengelyre mer\u0151legesen, m\u00edg mer\u0151legesen jelent\u0151sen cs\u00f6kkent. Ez a kompozitok er\u0151s p-dot\u00e1l\u00e1s\u00e1val magyar\u00e1zhat\u00f3.<\/p>\n
A szil\u00edcium-karbid (SiC) az egyik legk\u00f6nnyebb, legkem\u00e9nyebb \u00e9s leger\u0151sebb korszer\u0171 ker\u00e1miaanyag. Sz\u00e1mos fejlett tulajdons\u00e1ggal b\u00fcszk\u00e9lkedhet, mint p\u00e9ld\u00e1ul a k\u00e9miai ellen\u00e1ll\u00e1s, a szil\u00e1rds\u00e1g megtart\u00e1sa magas h\u0151m\u00e9rs\u00e9kleten \u00e9s az alacsony h\u0151t\u00e1gul\u00e1si ar\u00e1ny.<\/p>\n
Mivel a tit\u00e1n ellen\u00e1ll a gyors h\u0151m\u00e9rs\u00e9klet-v\u00e1ltoz\u00e1soknak, illetve a h\u0151sokknak, ide\u00e1lis anyag az atomer\u0151m\u0171vekben \u00e9s a rep\u00fcl\u0151g\u00e9p-hajt\u00f3m\u0171vekben haszn\u00e1lt alkatr\u00e9szekhez. Tov\u00e1bb\u00e1 tulajdons\u00e1gai alkalmass\u00e1 teszik arra, hogy sz\u00e1mos csillag\u00e1szati teleszk\u00f3p, p\u00e9ld\u00e1ul a Herschel \u0171rteleszk\u00f3p t\u00fckr\u00e9nek anyagak\u00e9nt haszn\u00e1lj\u00e1k.<\/p>\n
A 3C-SiC alacsony h\u0151t\u00e1gul\u00e1st mutat, ami a k\u00f6b\u00f6s krist\u00e1lyszerkezet\u00e9nek \u00e9s a nagy hat\u00f3t\u00e1vols\u00e1g\u00fa t\u00f6rzsek, p\u00e9ld\u00e1ul a diszlok\u00e1ci\u00f3k hi\u00e1ny\u00e1nak k\u00f6sz\u00f6nhet\u0151. Meg kell azonban jegyezni, hogy a SiC h\u0151vezet\u0151 k\u00e9pess\u00e9ge az elektronkoncentr\u00e1ci\u00f3 n\u00f6veked\u00e9s\u00e9vel n\u0151, ami potenci\u00e1lisan megv\u00e1ltoztatja a t\u00e1gul\u00e1si tulajdons\u00e1gait \u00e9s viselked\u00e9s\u00e9t.<\/p>\n
A BO-TDTR m\u00e9r\u00e9sek olyan s\u00edkbeli k \u00e9rt\u00e9ket mutatnak, amely megfelel a t\u00f6k\u00e9letes 6H-SiC mint\u00e1kra vonatkoz\u00f3 els\u0151 elvi sz\u00e1m\u00edt\u00e1sokb\u00f3l becs\u00fclt 320 W m-1K-1 \u00e9rt\u00e9knek, \u00edgy a kereskedelmi forgalomban kaphat\u00f3 mint\u00e1k kiv\u00e1l\u00f3 min\u0151s\u00e9g\u0171nek min\u0151s\u00fclnek.<\/p>\n
A Young-modulus az anyagok merevs\u00e9g\u00e9t m\u00e9ri, azt, hogy mennyire ellen\u00e1llnak a deform\u00e1ci\u00f3nak. A m\u00e9rn\u00f6k\u00f6k \u00e9s anyagtud\u00f3sok felbecs\u00fclhetetlen \u00e9rt\u00e9k\u0171nek tal\u00e1lj\u00e1k szerkezetek vagy term\u00e9kek tervez\u00e9sekor, mivel lehet\u0151v\u00e9 teszi sz\u00e1mukra annak kisz\u00e1m\u00edt\u00e1s\u00e1t, hogy egy anyag mekkora er\u0151t k\u00e9pes elviselni, miel\u0151tt meghajolna vagy megt\u00f6rne, ha er\u0151t alkalmaznak r\u00e1.<\/p>\n
A Young-modulus a rugalmas tulajdons\u00e1gokat m\u00e9ri, m\u00edg a rugalmatlan vagy merev tulajdons\u00e1gokat. \u00c9rt\u00e9k\u00e9t \u00fagy m\u00e9rheti, hogy ellen\u0151rz\u00f6tt fesz\u00fclts\u00e9get gyakorol r\u00e1, olyan r\u00e9selt t\u00f6megek seg\u00edts\u00e9g\u00e9vel, amelyek az anyagmint\u00e1k ellen\u0151rz\u00f6tt fesz\u00fclts\u00e9g\u00e9t \u00e9s deform\u00e1ci\u00f3j\u00e1t hozz\u00e1k l\u00e9tre.<\/p>\n
A Young-modulus vizsg\u00e1lati eredm\u00e9nyei a mint\u00e1k el\u0151\u00e1ll\u00edt\u00e1s\u00e1hoz haszn\u00e1lt m\u00f3dszert\u0151l f\u00fcgg\u0151en v\u00e1ltoznak, az inert g\u00e1zkondenz\u00e1ci\u00f3val k\u00e9sz\u00fclt mint\u00e1k Young-modulusa jelent\u0151sen alacsonyabb, mint a m\u00e1s elj\u00e1r\u00e1sokkal el\u0151\u00e1ll\u00edtottak\u00e9. Tov\u00e1bb\u00e1, a Ti-Nb bin\u00e1ris \u00f6tv\u00f6zetek C\u2019 (a Hill-k\u00f6zel\u00edt\u00e9ssel sz\u00e1m\u00edtott Young-modul) cs\u00f6kken\u00e9s\u00e9vel diszl\u00e1jkolnak; \u00edgy a rugalmass\u00e1gi \u00e1lland\u00f3 cs\u00f6kken\u00e9s\u00e9vel egy\u00fctt cs\u00f6kken a Young-moduljuk is.<\/p>\n
A szil\u00edciumkarbid (SiC) egy sz\u00e9nb\u0151l \u00e9s szil\u00edciumb\u00f3l \u00e1ll\u00f3 szervetlen f\u00e9lvezet\u0151 vegy\u00fclet, amely nagyszer\u0171 mechanikai \u00e9s termikus tulajdons\u00e1gokkal rendelkezik. A SiC rendk\u00edv\u00fcl h\u0151\u00e1ll\u00f3, ami azt jelenti, hogy a gyors h\u0151m\u00e9rs\u00e9klet-ingadoz\u00e1sok nem k\u00e1ros\u00edtj\u00e1k az anyagszerkezet\u00e9t.<\/p>\n
Az ac\u00e9l ellen\u00e1ll a savak okozta korr\u00f3zi\u00f3nak is, \u00edgy ide\u00e1lis a korr\u00f3zi\u00f3\u00e1ll\u00f3s\u00e1got, valamint a nagy kem\u00e9nys\u00e9get \u00e9s merevs\u00e9get ig\u00e9nyl\u0151 alkalmaz\u00e1sokhoz. Tov\u00e1bb\u00e1 alacsony h\u0151t\u00e1gul\u00e1si sebess\u00e9ge alkalmass\u00e1 teszi ezt az anyagot a gyors h\u0151m\u00e9rs\u00e9klet-v\u00e1ltoz\u00e1sokra.<\/p>\n
A SiC ide\u00e1lis anyag olyan f\u00e9mmegmunk\u00e1l\u00e1si alkalmaz\u00e1sokhoz, amelyek nagyfok\u00fa fizikai kop\u00e1ssal j\u00e1rnak, mint p\u00e9ld\u00e1ul a nikkel-szil\u00edcium-karbiddal vagy volfr\u00e1m-szilicid burkolattal t\u00f6rt\u00e9n\u0151 bevonatol\u00e1s. Tov\u00e1bb\u00e1 a SiC-t a f\u00e9lvezet\u0151 kemenc\u00e9kben a f\u00e9lvezet\u0151 t\u00e1lc\u00e1k al\u00e1t\u00e1maszt\u00e1s\u00e1hoz \u00e9s a lap\u00e1tokhoz is haszn\u00e1lj\u00e1k, ahol a fizikai kop\u00e1s nagy gondot jelent; ennek az anyagnak a b\u00f3rkarbid ker\u00e1mia kompozitokkal val\u00f3 p\u00e1ros\u00edt\u00e1sa maxim\u00e1lis szil\u00e1rds\u00e1g-\u00e1ll\u00f3s\u00e1g ar\u00e1nyt k\u00edn\u00e1l ezekhez a felhaszn\u00e1l\u00e1sokhoz.<\/p>","protected":false},"excerpt":{"rendered":"
Silicon Carbide (SiC) is an extremely hard chemical compound consisting of silicon and carbon that forms semiconductor devices, and can be formed into hard ceramic materials for applications requiring high durability such as car brakes and bulletproof vests. SiC is widely recognized for its superior thermal conductivity. Here we explore the relationship between thermal conductivity, […]<\/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-140","post","type-post","status-publish","format-standard","hentry","category-knowledge"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/ceramicatijolart.com\/hu\/wp-json\/wp\/v2\/posts\/140","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ceramicatijolart.com\/hu\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ceramicatijolart.com\/hu\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ceramicatijolart.com\/hu\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ceramicatijolart.com\/hu\/wp-json\/wp\/v2\/comments?post=140"}],"version-history":[{"count":1,"href":"https:\/\/ceramicatijolart.com\/hu\/wp-json\/wp\/v2\/posts\/140\/revisions"}],"predecessor-version":[{"id":141,"href":"https:\/\/ceramicatijolart.com\/hu\/wp-json\/wp\/v2\/posts\/140\/revisions\/141"}],"wp:attachment":[{"href":"https:\/\/ceramicatijolart.com\/hu\/wp-json\/wp\/v2\/media?parent=140"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ceramicatijolart.com\/hu\/wp-json\/wp\/v2\/categories?post=140"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ceramicatijolart.com\/hu\/wp-json\/wp\/v2\/tags?post=140"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}