Silicon carbide (SiC) ndi zinthu za ceramic zomwe zimalimidwa pafupipafupi ngati kristalo imodzi pakugwiritsa ntchito semiconductor. Chifukwa cha zinthu zake zakuthupi komanso kukula kwa kristalo imodzi, ndi chimodzi mwazinthu zolimba kwambiri za semiconductor pamsika. Kulimba uku kumapitilira kupitilira mphamvu zake zamagetsi.
Kukhalitsa Kwathupi
Kulimba kwa thupi kwa SiC kumawonetsedwa bwino poyang'ana ntchito zake zomwe sizili zamagetsi: sandpaper, extrusion dies, mbale za bulletproof vest, ma brake disks ochita bwino kwambiri, ndi zoyatsira moto. SiC idzakanda chinthu m'malo modzikanda yokha. Akagwiritsidwa ntchito mu ma disks apamwamba kwambiri, kukana kwawo kuvala kwa nthawi yaitali m'madera ovuta amayesedwa. Kuti igwiritsidwe ntchito ngati mbale yoteteza zipolopolo, SiC iyenera kukhala ndi mphamvu zonse zakuthupi komanso zamphamvu.
Kukhalitsa kwa Chemical ndi Magetsi
SiC imadziwika chifukwa cha kusakhazikika kwamankhwala; sichimakhudzidwa ngakhale ndi mankhwala owopsa kwambiri, monga alkalis ndi mchere wosungunula, ngakhale pamene akukumana ndi kutentha kwa 800 ° C. Chifukwa cha kukana kwake kumenyana ndi mankhwala, SiC siiwononga ndipo imatha kupirira madera ovuta kuphatikizapo kukhala ndi mpweya wonyowa, madzi amchere, ndi mankhwala osiyanasiyana.
Chifukwa cha bandgap yake yamphamvu kwambiri, SiC imalimbana kwambiri ndi kusokonezeka kwa ma elekitiroma komanso zowononga za radiation. SiC imalimbananso kwambiri ndi kuwonongeka kwamphamvu kwambiri kuposa Si.
Thermal Shock Resistance
Kukaniza kwa SiC ku kugwedezeka kwa kutentha ndi khalidwe lina lofunika. Chinthu chikakumana ndi kutentha kwambiri, kutentha kwa kutentha kumachitika (ie, pamene magawo osiyanasiyana a chinthu ali pa kutentha kosiyana kwambiri). Chifukwa cha kutentha kumeneku, kuchuluka kwa kufalikira kapena kutsika kumasiyana pakati pa magawo osiyanasiyana. Kugwedezeka kwamafuta kumatha kuyambitsa fractures muzinthu zowonongeka, koma SiC imagonjetsedwa kwambiri ndi zotsatirazi. Kutentha kwa kutentha kwa SiC ndi chifukwa cha kutentha kwake kwapamwamba (350 W / m / K kwa kristalo imodzi) ndi kutsika kwa kutentha kwapakati poyerekeza ndi zida zambiri za semiconductor.
Zamagetsi za SiC (mwachitsanzo, ma MOSFET ndi ma Schottky diode) amagwiritsidwa ntchito popanga zinthu zankhanza, monga ma HEV ndi ma EV, chifukwa chokhazikika. Ndi chinthu chabwino kwambiri chomwe chimagwiritsidwa ntchito popanga semiconductor chomwe chimafuna kulimba komanso kudalirika chifukwa chakulimba kwake, mankhwala, komanso mphamvu zamagetsi.
