Njira Zopangira Silicon Carbide Ceramics

Njira Zopangira Silicon Carbide Ceramics: Chidule Chathunthu

Kapangidwe kake ka kristalo ndi makhalidwe ake apadera a silicon carbide ceramics zimathandiza kuti zikhale zabwino kwambiri. Zili ndi mphamvu zabwino kwambiri, kuuma kwambiri, kukana kuwonongeka, kukana dzimbiri, kutentha kwambiri komanso kukana kutentha kwambiri. Zinthu zimenezi zimapangitsa silicon carbide ceramics kukhala yabwino kwambiri pakugwiritsa ntchito ballistic.

Kupanga kwa silicon carbide ceramics nthawi zambiri kumagwiritsa ntchito njira zotsatirazi:

1. Kuumba mokakamiza: Kuumba mokakamiza ndi njira yomwe imagwiritsidwa ntchito kwambiri popanga mapepala oteteza zipolopolo a silicon carbide. Njirayi ndi yosavuta, yosavuta kugwiritsa ntchito, yogwira ntchito bwino kwambiri komanso yoyenera kupanga mosalekeza.

2. Kuumba jakisoni: Kuumba jakisoni kumakhala kosinthasintha bwino ndipo kumatha kupanga mawonekedwe ndi kapangidwe kovuta. Njirayi ndi yothandiza kwambiri popanga zida zapadera za silicon carbide ceramic.

3. Kukanikiza kozizira kosiyana ndi kutentha: Kukanikiza kozizira kosiyana ndi kutentha kumaphatikizapo kugwiritsa ntchito mphamvu yofanana pa thupi lobiriwira, zomwe zimapangitsa kuti kugawika kwamphamvu kukhale kofanana. Ukadaulo uwu umathandiza kwambiri kuti zinthu zigwire bwino ntchito ndipo ndi woyenera kupanga zinthu za silicon carbide zogwiritsidwa ntchito kwambiri.

4. Kuumba jekeseni wa jekeseni: Kuumba jekeseni wa jekeseni ndi njira yatsopano youmba pafupifupi kukula kwake. Thupi lobiriwira lomwe limapangidwa lili ndi kapangidwe kofanana komanso mphamvu zambiri. Zigawo za ceramic zomwe zapezeka zimatha kukonzedwa ndi makina osiyanasiyana, zomwe zimachepetsa mtengo wokonza pambuyo poyatsa. Kuumba jekeseni wa jekeseni wa jekeseni ndikoyenera kwambiri popanga ziwiya za silicon carbide zokhala ndi zomangamanga zovuta.

Pogwiritsa ntchito njira zopangira izi, opanga amatha kupeza zoumba zapamwamba za silicon carbide zokhala ndi mphamvu zabwino kwambiri zamakaniko komanso za ballistic. Kutha kupanga zoumba za silicon carbide kukhala mitundu ndi kapangidwe kosiyanasiyana kumalola kusintha ndi kukonza kuti zikwaniritse zofunikira za ntchito zosiyanasiyana.

Kuphatikiza apo, kugwiritsa ntchito bwino ndalama kwa zinthu za silicon carbide kumawonjezera kukongola kwake ngati chinthu cholimba kwambiri komanso cholimba. Kuphatikiza kwa zinthu zabwinozi komanso mtengo wabwino kumapangitsa kuti zinthu za silicon carbide zikhale zolimba kwambiri m'malo otetezera thupi.

Pomaliza, silicon carbide ceramics ndi zinthu zotsogola kwambiri chifukwa cha makhalidwe awo abwino komanso njira zosiyanasiyana zopangira zinthu. Kapangidwe ka kristalo, mphamvu, kuuma, kukana kukalamba, kukana dzimbiri, kutentha koyendetsa komanso kukana kutentha kwa zinthu za silicon carbide ceramics zimapangitsa kuti zikhale zosangalatsa kwa opanga ndi ofufuza. Ndi njira zosiyanasiyana zopangira, opanga amatha kusintha silicon carbide ceramics kuti ikwaniritse ntchito zinazake, kuonetsetsa kuti ikugwira ntchito bwino komanso chitetezo. Tsogolo la silicon carbide ceramics ndi labwino pamene akupitilizabe kupanga ndikuchita bwino pazinthu za ballistic.

Ponena za chitetezo cha ballistic, kuphatikiza mapepala a polyethylene ndi zoyikapo za ceramic kwakhala kothandiza kwambiri. Pakati pa mitundu yosiyanasiyana ya ceramic yomwe ilipo, silicon carbide yakopa chidwi chachikulu kunyumba ndi kunja. M'zaka zaposachedwa, ofufuza ndi opanga akhala akufufuza kuthekera kwa silicon carbide ceramics ngati chinthu cholimba kwambiri chifukwa cha makhalidwe ake abwino komanso mtengo wake wochepa.

Silicon carbide ndi chinthu chomwe chimapangidwa ndi ma tetrahedrons a Si-C, ndipo chili ndi mitundu iwiri ya makristalo, α ndi β. Pa kutentha kotentha kochepera 1600°C, silicon carbide imakhala mu mawonekedwe a β-SiC, ndipo kutentha kukapitirira 1600°C, silicon carbide imasanduka α-SiC. Chigwirizano cha covalent cha α-silicon carbide ndi champhamvu kwambiri, ndipo chimatha kusunga mgwirizano wamphamvu kwambiri ngakhale kutentha kwambiri.