Na zamani C, N, B da sauran wadanda ba oxide high-tech refractory albarkatun kasa, yanayi matsa lamba sintered silicon carbide ne m, tattalin arziki, za a iya ce emery ko refractory yashi. Silikon carbide mai tsafta shine kristal bayyananne mara launi. Don haka menene tsarin kayan abu da halayen silicon carbide?
Sintered silicon carbide karkashin yanayin yanayi
Tsarin abubuwa na matsa lamba na yanayi sintered silicon carbide:
A yanayi matsa lamba sintered silicon carbide amfani a masana'antu ne haske rawaya, kore, blue da kuma baki bisa ga nau'i da abun ciki na ƙazanta, da kuma tsarki ya bambanta da kuma bayyananne dabam. Tsarin crystal carbide na silicon carbide ya kasu kashi shida-kalmomi ko lu'u-lu'u siffar plutonium da cubic plutonium-sic. Plutonium-sic yana haifar da nakasawa iri-iri saboda tsarin tarawa na carbon da silicon atom a cikin tsarin crystal, kuma an sami fiye da nau'ikan nakasar 70. beta-SIC yana canzawa zuwa alpha-SIC sama da 2100. Tsarin masana'antu na silicon carbide an tsabtace shi tare da yashi ma'adini mai inganci da coke mai mai a cikin tanderun juriya. An murƙushe tubalan siliki carbide masu ladabi, tsabtace tushen acid, rabuwar maganadisu, tantancewa ko zaɓin ruwa don samar da samfuran girman girman barbashi iri-iri.
Halayen kayan abu na matsa lamba na yanayi sintered silicon carbide:
Silicon carbide yana da kyakkyawan kwanciyar hankali na sinadarai, halayen thermal, haɓaka haɓakar thermal, juriya, don haka ban da amfani da abrasive, akwai amfani da yawa: Misali, foda na silicon carbide yana da rufin bangon ciki na injin turbine ko silinda block tare da wani tsari na musamman, wanda zai iya inganta juriya na lalacewa kuma ya kara tsawon rayuwar 1 zuwa 2 sau. An yi shi da zafi mai zafi, ƙananan ƙananan, nauyi mai sauƙi, ƙarfin ƙarfin kayan haɓaka mai mahimmanci, ƙarfin makamashi yana da kyau sosai. Low-grade silicon carbide (ciki har da kusan 85% SiC) kyakkyawan deoxidizer ne don haɓaka saurin ƙera ƙarfe da sauƙin sarrafa abubuwan sinadarai don haɓaka ingancin ƙarfe. Bugu da kari, matsi na yanayi sintered silicon carbide kuma ana amfani da ko'ina wajen kera sassan lantarki na sandunan carbon carbon.
Silicon carbide yana da wuyar gaske. Taurin Morse shine 9.5, na biyu kawai zuwa lu'u-lu'u mai wuya a duniya (10), wani semiconductor ne tare da kyawawan halayen thermal, yana iya tsayayya da iskar shaka a yanayin zafi. Silicon carbide yana da aƙalla nau'ikan crystalline 70. Plutonium-silicon carbide shine isomer na kowa wanda ke samuwa a yanayin zafi sama da 2000 kuma yana da tsarin crystalline hexagonal (mai kama da wurtzite). Sintered silicon carbide karkashin yanayin yanayi
Aikace-aikacen silicon carbide a masana'antar semiconductor
Silicon carbide semiconductor masana'antu sarkar yafi hada da silicon carbide high-tsarki foda, guda crystal substrate, epitaxial takardar, ikon aka gyara, module marufi da m aikace-aikace.
1. Single crystal substrate Single crystal substrate ne a semiconductor goyon bayan abu, conductive abu da epitaxial girma substrate. A halin yanzu, hanyoyin haɓakar SiC guda kristal sun haɗa da hanyar canja wurin tururi ta jiki (hanyar PVT), hanyar lokaci na ruwa (Hanyar LPE), da babban zafin jiki na tururi na sinadari (HTCVD hanya). Sintered silicon carbide karkashin yanayin yanayi
2. Epitaxial takardar Silicon carbide epitaxial takardar, silicon carbide takardar, guda crystal film (epitaxial Layer) tare da wannan shugabanci kamar yadda substrate crystal cewa yana da wasu bukatun ga silicon carbide substrate. A cikin aikace-aikacen aikace-aikacen, na'urorin rata mai faɗi mai faɗi kusan duk ana kera su a cikin Layer epitaxial, kuma guntu siliki da kanta ana amfani da ita azaman maɗaukaki ne kawai, gami da madaidaicin GaN epitaxial Layer.
3. High-tsarki silicon carbide foda High-tsarki silicon carbide foda ne albarkatun kasa don girma na silicon carbide guda crystal ta hanyar PVT, da kuma tsarki na samfurin kai tsaye rinjayar girma ingancin da lantarki halaye na silicon carbide guda crystal.
4. Na'urar wutar lantarki shine babban ƙarfin da aka yi da kayan siliki na siliki, wanda ke da halaye na yawan zafin jiki, babban mita da inganci. Dangane da nau'in aiki na na'urar, na'urar samar da wutar lantarki ta SiC galibi ta ƙunshi diode wuta da bututun wutar lantarki.
5. Terminal A aikace-aikacen semiconductor na ƙarni na uku, semiconductor silicon carbide suna da fa'idar kasancewa masu dacewa da gallium nitride semiconductor. Saboda babban ƙarfin juzu'i, ƙananan halaye masu zafi, nauyi mai nauyi da sauran fa'idodin na'urorin SiC, buƙatar masana'antar ƙasa ta ci gaba da ƙaruwa, kuma akwai yanayin maye gurbin na'urorin SiO2.
Lokacin aikawa: Juni-16-2023