Silicon Carbide, yomwe imadziwikanso kuti carborundum, ndi pawiri ya silicon-carbon. Mankhwalawa amapangidwa ndi mineral moissanite. Silicon Carbide yopezeka mwachilengedwe imatchedwa Dr Ferdinand Henri Moissan, wazamankhwala waku France. Moissanite imapezeka pang'onopang'ono mu meteorites, kimberlite, ndi corundum. Umu ndi momwe malonda ambiri a Silicon Carbide amapangidwira. Ngakhale kuti Silicon Carbide yochitika mwachilengedwe ndiyovuta kuyipeza Padziko Lapansi, imakhala yochuluka mumlengalenga.
Kusiyanasiyana kwa Silicon Carbide
Zogulitsa za Silicon Carbide zimapangidwa m'njira zinayi kuti zigwiritsidwe ntchito popanga uinjiniya wamalonda. Izi zikuphatikizapo
Sintered Silicon Carbide (SSiC)
Reaction Bonded Silicon Carbide (RBSiC kapena SiSiC)
Nitride yomangidwa ndi Silicon Carbide (NSiC)
Recrystallized Silicon Carbide (RSiC)
Kusiyana kwina kwa chomangira kumaphatikizapo SIALON yomangidwa ndi Silicon Carbide. Palinso CVD Silicon Carbide (CVD-SiC), yomwe ndi mawonekedwe oyera kwambiri a pawiri opangidwa ndi kuyika kwa nthunzi wamankhwala.
Kuti sinter Silicon Carbide, ndikofunikira kuwonjezera zothandizira zomwe zimathandizira kupanga gawo lamadzimadzi pa kutentha kwa sintering, kulola mbewu za Silicon Carbide kuti zigwirizane.
Zofunikira za Silicon Carbide
High matenthedwe madutsidwe ndi otsika coefficient wa kukulitsa matenthedwe. Kuphatikizika kwazinthuku kumapereka kukana kwamphamvu kwamafuta, kupangitsa kuti zoumba za Silicon Carbide zikhale zothandiza m'mafakitale osiyanasiyana. Komanso ndi semiconductor ndipo mphamvu zake zamagetsi zimapangitsa kuti zikhale zoyenera pa ntchito zosiyanasiyana. Amadziwikanso chifukwa cha kuuma kwake kwambiri komanso kukana dzimbiri.
Kugwiritsa ntchito Silicon Carbide
Silicon Carbide itha kugwiritsidwa ntchito m'mafakitale osiyanasiyana.
Kulimba kwake kwakuthupi kumapangitsa kuti ikhale yoyenera pakupanga makina abrasive monga kugaya, honing, sandblasting, ndi waterjet kudula.
Kutha kwa Silicon Carbide kupirira kutentha kwambiri popanda kusweka kapena kupunduka kumagwiritsidwa ntchito popanga ma brake discs a ceramic pamagalimoto amasewera. Amagwiritsidwanso ntchito ngati zida zankhondo muzovala zoteteza zipolopolo komanso ngati mphete yosindikizira zosindikizira shaft shaft, komwe nthawi zambiri imathamanga kwambiri polumikizana ndi Silicon Carbide seal. Kutentha kwapamwamba kwa Silicon Carbide, komwe kumatha kuwononga kutentha komwe kumapangidwa ndi mawonekedwe opaka, ndikothandiza kwambiri pamagwiritsidwe awa.
Chifukwa cha kuuma kwapamwamba kwa zinthuzo, zimagwiritsidwa ntchito pazinthu zambiri zaumisiri komwe kumafunika kukana kutsetsereka, kuwononga komanso kuvala zowononga. Nthawi zambiri, izi zimagwiranso ntchito pazigawo zomwe zimagwiritsidwa ntchito pamapampu kapena mavavu pakugwiritsa ntchito malo opangira mafuta, pomwe zida zachitsulo zodziwika bwino zimatha kuwonetsa kuchuluka kwa mavalidwe komwe kumabweretsa kulephera mwachangu.
Mphamvu zapadera zamagetsi zomwe zimapangidwira ngati semiconductor zimapangitsa kuti zikhale zoyenera kupanga ma diode opepuka kwambiri komanso okwera kwambiri, ma MOSFET, ndi ma thyristors pakusintha kwamphamvu kwambiri.
Kutsika kwake kocheperako pakukulitsa kwamafuta, kuuma, kuuma, komanso kusinthasintha kwamafuta kumapangitsa kuti ikhale yabwino kwa magalasi owonera zakuthambo. Thin filament pyrometry ndi njira yowunikira yomwe imagwiritsa ntchito filaments ya Silicon Carbide kuyesa kutentha kwa mpweya.
Amagwiritsidwanso ntchito potenthetsa zinthu zomwe zimayenera kupirira kutentha kwambiri. Amagwiritsidwanso ntchito popereka chithandizo chamankhwala pamanyukiliya anyukiliya omwe amatha kutentha kwambiri ndi gasi.
