Njerwa ya carbide njerwa

1. Zomwe zili mu njerwa za silicon carbide ndi SiC, zomwe zili ndi 72% -99%. Njerwa za silicon carbide zimagwiritsidwa ntchito m’mafakitale osiyanasiyana ndi zida zamafuta chifukwa chamagulu osiyanasiyana. Malinga ndi njira zosiyanasiyana zolumikizira, opanga njerwa za silicon carbide amagawika pakumanga ndi dongo, kulumikiza kwa Sialon, kulumikizana ndi alumina, kudziphatika nokha, kulumikizana kwa aluminium kwambiri, kulumikizana kwa silicon nitride, ndi zina zambiri. Kodi ntchito njerwa za silicon carbide ndi ziti? Kodi ntchito zazikulu ndi ziti?

2. Chifukwa zopangira njerwa za silicon carbide ndi silicon carbide, silicon carbide, yomwe imadziwikanso kuti emery, imapangidwa ndi kutentha kwa zinthu zotentha kwambiri monga mchenga wa quartz, coke, ndi tchipisi tamatabwa. Silicon carbide imagwiritsidwa ntchito popanga zida zapamwamba chifukwa chokhazikika pamankhwala, matenthedwe otentha kwambiri, koyefishienti kakang’ono kofutukula, komanso kukana kwabwino.

3. Njerwa za silicon carbide zimasinthidwa kukhala zotenthetsera moto zotentha kwambiri pogwiritsa ntchito mawonekedwe a silicon carbide monga kukana dzimbiri, kutentha kwambiri, mphamvu yayikulu, matenthedwe abwino amadzimadzi, komanso kukana kwamphamvu, ndipo amagwiritsidwa ntchito pamatenthedwe osiyanasiyana matenthedwe zida.

4. Zida za silicon carbide zimagwiritsa ntchito silicon carbide ngati zopangira, onjezerani dothi, silicon oxide ndi zomangirira zina kuti sinter pa 1350 mpaka 1400 ° C. Silicon carbide ndi ufa wa silicon amathanso kupangidwa kukhala mankhwala a silicon nitride-silicon carbide mumlengalenga wa nayitrogeni mu ng’anjo yamagetsi. Zogulitsa za Carbon zimakhala ndi kukhathamira kocheperako kocheperako, matenthedwe otentha kwambiri, kukana kwamphamvu kwamatenthedwe, komanso kutentha kwapamwamba kwambiri. Sichimafewetsa mutagwiritsa ntchito nthawi yayitali kutentha, sichiwonongeka ndi asidi ndi soda, imakhala ndi mchere wabwino, ndipo sichinyowa ndi zitsulo ndi slag. Ndi yopepuka kulemera ndipo ndipamwamba kwambiri yotentha. Chosavuta ndichakuti ndikosavuta kusungunuka kutentha kwambiri ndipo siyoyenera kugwiritsidwa ntchito mumlengalenga. Zogulitsa zama kaboni zimagwiritsidwa ntchito kwambiri pazitsulo zotentha kwambiri (pansi pamoto, moto, gawo lotsika lamoto, etc.)

5. Zokhudzana zakuthupi ndi zamankhwala zazitsulo za njerwa za silicon carbide: