Pamsika, timadziwa bwino zida zapadera za ceramic: silicon carbide, alumina, zirconia, silicon nitride.Kufuna kwamsika kwathunthu, pendani ubwino wa mitundu ingapo yazinthu izi.
Silicon carbide ili ndi zabwino zamtengo wotchipa, kukana kukokoloka kwabwino, mphamvu yayikulu, choyipa chachikulu ndichosavuta kuyimitsa oxidize, ndizovuta kuti sintering.Alumina ndi yotsika mtengo kwambiri, ndipo njira yokonzekera ufa ndi yokhwima kwambiri, pamene zirconia ndi silicon nitrous oxide zili ndi zovuta zoonekeratu pankhaniyi, zomwenso ndi chimodzi mwazomwe zimalepheretsa kukula kwa awiri omaliza.Silicon nitride, makamaka, ndiyo yokwera mtengo kwambiri.
Pankhani ya magwiridwe antchito, ngakhale mphamvu, kulimba ndi zina zamakina za silicon nitride ndi zirconia ndizabwino kwambiri kuposa alumina, zikuwoneka kuti mtengo wake ndi woyenera, koma kwenikweni pali mavuto ambiri.Choyamba kuchokera ku zirconia, ali ndi kulimba kwakukulu, chifukwa chake ndi kukhalapo kwa stabilizer, koma kulimba kwake kumakhala kosasunthika nthawi, sikungagwiritsidwe ntchito pa kutentha kwakukulu ndi kutentha kwa chipinda nthawi yotentha kwambiri kuletsa kukula kolakwika kwa okosijeni, ziyenera kukhala. adanena kuti ndi yaying'ono kwambiri mwa atatu omwe ali pamsika.Ndipo silicon nitride, nawonso ndi ceramic wotchuka m'zaka makumi awiri zapitazi, mphamvu yovala yosagwira kutentha ndi ntchito zina zonse ndi zabwino, koma kugwiritsa ntchito kutentha kumakhala kochepa kuposa ziwiri zina;Kukonzekera kwa silicon nitride kumakhala kovuta kwambiri kuposa alumina, ngakhale kugwiritsa ntchito silicon nitride gawo kuli bwino kwambiri kuposa zirconia, koma kuyerekezera kwakukulu sikuli bwino ngati alumina.
Kuchita kotsika mtengo, kosasunthika, kusiyanasiyana kwazinthu zazitsulo za aluminiyamu kunakhala kugwiritsidwa ntchito koyambirira, ndipo kwagwiritsidwa ntchito popanga zida zapadera zamakono.
Nthawi yotumiza: Jan-22-2022