Dab tsi yog qhov zoo thiab qhov tsis zoo ntawm silicon carbide piv nrog silicon nitride, aluminium oxide thiab zirconia?

Qhov loj tshaj qhov tsis zoo ntawmsilicon carbideyog tias nws nyuaj rau sinter!
Silicon nitride yog kim dua!

Cov theem hloov pauv thiab cov nyhuv toughening ntawm zirconia tsis ruaj khov thiab qee zaum siv tau. Thaum qhov teeb meem no tau kov yeej, tsis yog zirconia nkaus xwb, tag nrho cov ceramics tuaj yeem muaj kev tawg! .

Alumina ntau dua thiab pheej yig dua, thiab muaj qhov kub thiab txias.
Zirconia muaj kev tiv thaiv zoo dua li alumina thiab kub dua, tab sis nws cov thermal shock kuj yog qhov phem dua li alumina.
Silicon nitride muaj cov khoom zoo xws li hnav tsis kam thiab thermal poob siab, tab sis kev siv kub qis dua li ob. Qhov kim tshaj plaws.
Alumina ceramics yog cov khoom siv ua ntej tshaj plaws. Tus nqi pheej yig, kev ua haujlwm ruaj khov thiab cov khoom sib txawv. Kev ua lag luam yog qhov loj tshaj plaws thiab loj tshaj plaws alumina, vim li cas? Muab piv ob tom kawg thiab koj yuav nkag siab.

Nws yog feem ntau piv rau kev ua tau zoo thiab tus nqi. Tom qab ntawd nws yog tus nqi-zoo los ntawm kev lag luam pom.
Nyob rau hauv cov nqe lus ntawm tus nqi, alumina yog qhov pheej yig tshaj, thiab cov hmoov raw khoom npaj txheej txheem kuj paub tab heev. Ob lub tom kawg muaj qhov tsis zoo ntawm qhov no, uas kuj yog ib qho ntawm cov kev txwv tsis pub muaj kev loj hlob ntawm ob lub tom kawg.
Hais txog kev ua tau zoo, cov khoom siv kho tshuab xws li lub zog thiab tawv ntawm silicon nitride thiab zirconia zoo dua li cov alumina. Nws zoo nkaus li tias tus nqi ua tau zoo yog qhov tsim nyog, tab sis qhov tseeb muaj ntau yam teeb meem.
Los ntawm qhov kev xav ntawm zirconia, nws muaj zog toughness vim muaj cov stabilizers, tab sis nws lub siab toughness yog lub sij hawm-rhiab heev. Piv txwv li, tom qab lub zirconia ntaus ntawv tso rau hauv cov huab cua rau ib lub sij hawm ntawm lub sij hawm, nws yuav poob stability thiab kev ua tau zoo yuav hnyav poob los yog txawm tawg! !! !! Ntxiv mus, tsis muaj metastable theem ntawm qhov kub thiab txias, yog li tsis muaj siab toughness. Yog li ntawd, kev siv qhov kub thiab txias hauv chav tsev tuaj yeem txwv txoj kev loj hlob ntawm zirconia. Nws yuav tsum tau hais tias nws yog qhov tsawg tshaj plaws ntawm peb lub khw.
Hais txog silicon nitride, nws kuj yog ib tug nrov ceramic nyob rau hauv ob lub xyoo dhau los, tab sis nws tiav lawm txheej txheem kev npaj cov khoom kuj nyuab dua alumina, uas yog zoo dua li zirconia, tab sis nws tseem tsis zoo li alumina.