Hauv kev ua lag luam, peb paub ntau ntxiv txog cov khoom siv ceramic tshwj xeeb: silicon carbide, alumina, zirconia, silicon nitride. Kev thov ua lag luam dav dav, tshuaj xyuas qhov zoo ntawm ntau hom khoom siv no.
Silicon carbide muaj qhov zoo ntawm tus nqi pheej yig, tiv taus kev yaig zoo, muaj zog siab, qhov tsis zoo tshaj plaws yog yooj yim oxidized, nyuaj rau sintering. Alumina yog qhov pheej yig tshaj plaws, thiab cov txheej txheem npaj cov hmoov raw yog qhov paub tab heev, thaum zirconia thiab silicon nitrous oxide muaj qhov tsis zoo pom tseeb hauv qhov no, uas kuj yog ib qho ntawm cov teeb meem txwv tsis pub txoj kev loj hlob ntawm ob qho kawg. Silicon nitride, tshwj xeeb, yog qhov kim tshaj plaws.
Hais txog kev ua tau zoo, txawm hais tias lub zog, toughness thiab lwm yam khoom siv kho tshuab ntawm silicon nitride thiab zirconia zoo dua li alumina, nws zoo li qhov kev ua tau zoo ntawm tus nqi yog qhov tsim nyog, tab sis qhov tseeb muaj ntau yam teeb meem. Ua ntej los ntawm zirconia, nws muaj toughness siab, qhov laj thawj yog qhov muaj stabilizer, tab sis nws qhov toughness siab yog lub sijhawm-sensitive, tsis tuaj yeem siv ntawm qhov kub siab thiab chav tsev kub lub sijhawm-sensitive tiag tiag txwv tsis pub txoj kev loj hlob tsis raug ntawm oxidation, nws yuav tsum tau hais tias nws yog qhov tsawg tshaj plaws ntawm peb hauv kev ua lag luam. Thiab silicon nitride, kuj yog ib qho ceramic nrov hauv nees nkaum xyoo dhau los, hnav-resistant thermal shock lub zog thiab lwm yam kev ua tau zoo yog qhov zoo, tab sis kev siv kub qis dua ob lwm tus; Cov txheej txheem npaj ntawm silicon nitride kuj nyuaj dua li alumina, txawm hais tias daim ntawv thov ntawm silicon nitride theem zoo dua li zirconia, tab sis kev sib piv tag nrho tseem tsis zoo li alumina.
Pheej yig, ruaj khov, thiab muaj ntau yam khoom siv alumina ceramics tau dhau los ua qhov siv thawj zaug, thiab tau siv rau cov khoom siv ceramics tshwj xeeb tam sim no.
Lub sijhawm tshaj tawm: Lub Ib Hlis-22-2022