Hauv kev ua lag luam, peb paub ntau dua nrog cov ntaub ntawv tshwj xeeb ceramic: silicon carbide, alumina, zirconia, silicon nitride.Kev lag luam kev xav tau, txheeb xyuas qhov zoo ntawm cov khoom siv ntau yam no.
Silicon carbide muaj qhov zoo ntawm tus nqi pheej yig, kev yaig zoo, lub zog siab, qhov tsis zoo tshaj plaws yog yooj yim rau oxidize, nws nyuaj rau sintering.Alumina yog qhov pheej yig tshaj plaws, thiab cov txheej txheem ntawm cov hmoov raw cov ntaub ntawv yog cov paub tab, thaum zirconia thiab silicon nitrous oxide muaj qhov tsis zoo ntawm qhov kev hwm no, uas kuj yog ib qho ntawm cov kev txwv tsis pub muaj kev loj hlob ntawm ob lub tom kawg.Silicon nitride, tshwj xeeb, yog qhov kim tshaj plaws.
Hais txog kev ua tau zoo, txawm hais tias lub zog, tawv thiab lwm yam khoom siv ntawm silicon nitride thiab zirconia zoo dua li alumina, nws zoo li cov nqi kev ua tau zoo, tab sis qhov tseeb muaj ntau yam teeb meem.Ua ntej los ntawm zirconia, nws muaj zog toughness, yog vim li cas yog lub hav zoov ntawm stabilizer, tab sis nws lub siab toughness yog lub sij hawm-rhiab heev, tsis tuaj yeem siv rau ntawm qhov kub thiab txias hauv chav sov lub sij hawm-rhiab heev txwv qhov tsis ncaj ncees lawm txoj kev loj hlob ntawm oxidation, nws yuav tsum tau. hais tias nws yog qhov tsawg tshaj plaws ntawm peb lub khw.Thiab silicon nitride, kuj yog ib tug nrov ceramic nyob rau hauv nees nkaum xyoo dhau los, hnav-resistant thermal poob siab lub zog thiab lwm yam kev ua tau zoo, tab sis kev siv ntawm qhov kub thiab txias yog tsawg tshaj li ob;Kev npaj cov txheej txheem ntawm silicon nitride kuj tseem nyuaj dua alumina, txawm hais tias daim ntawv thov ntawm silicon nitride theem zoo dua zirconia, tab sis tag nrho kev sib piv tseem tsis zoo li alumina.
Tus nqi pheej yig, kev ua haujlwm ruaj khov, cov khoom lag luam sib txawv ntawm alumina ceramics tau dhau los ua kev siv ntxov tshaj plaws, thiab tau siv rau tam sim no tshwj xeeb ceramics.
Post lub sij hawm: Jan-22-2022