Yuav ua li cas cov khoom ntawm oxide ceramics cuam tshuam rau lawv cov txheej txheem tsim khoom

Kev xaiv cov khoom siv raw: Oxide ceramics nrog cov khoom sib txawv yuav xav tau kev xaiv cov khoom siv raw. Piv txwv li, alumina ceramics feem ntau siv alumina ua cov khoom tseem ceeb; zirconia ceramics siv zirconia ua cov khoom tseem ceeb. Qhov purity, particle loj thiab lwm yam ntxwv ntawm cov khoom siv raw yuav cuam tshuam rau kev ua haujlwm thiab kev tsim khoom ntawm cov ceramics kawg.
Moulding method: Cov khoom ntawm oxide ceramics yuav cuam tshuam rau txoj kev tsim nyog molding. Piv txwv li, ceramics nrog ntau zog thiab hardness tej zaum yuav haum rau qhuav nias; thaum rau qee cov duab los yog cov khoom uas xav tau siab precision, cov txheej txheem xws li plam casting thiab daim kab xev casting yuav raug siv. Piv txwv li, iav ceramics muaj cov yam ntxwv ntawm ob lub iav thiab ceramics. Nws muaj pes tsawg leeg thiab microstructure yog ob qho tseem ceeb cuam tshuam ntawm cov khoom tsim. Lub ntsiab tseem ceeb yog qhov kev txiav txim siab ntawm nucleation. Rau cov iav ceramics nrog cov khoom siv kho qhov muag thiab kho qhov muag, microstructure yog qhov cuam tshuam tseem ceeb, uas cuam tshuam rau lub ntsiab lus tseem ceeb thiab kev sib sau ntawm microcrystalline theem. Kev kho cua sov sib txawv kuj tseem yuav muaj kev cuam tshuam tseem ceeb ntawm microstructure. Kev tswj cov crystallization ntawm iav yog qhov yuav tsum tau ua ua ntej rau kev tsim cov iav ceramics. Nucleation yog qhov txiav txim siab hauv kev tswj cov crystallization. Kev tsim cov muaju nyob rau hauv niam iav feem ntau yog dhau los ntawm submicroscopic nucleus tsim theem thiab submicroscopic nucleus kev loj hlob theem, uas yog hu ua nucleation thiab crystal kev loj hlob raws li. Nucleation cuam tshuam los ntawm ob yam. Ib qho yog xaiv cov niam iav uas tsim cov tshuaj muaj pes tsawg leeg, feem ntau yog ntxiv ib tus neeg sawv cev nucleating, thiab lwm qhov yog los tswj cov kev kho cua sov, uas yog, qhov kub thiab txias thiab lub sijhawm tuav.
Sintering txheej txheem: Cov tsis xws li sintering kub thiab lub sij hawm tuav ntawm cov ceramic yuav tsum tau kho raws li nws cov kev ua tau zoo. Qee cov oxide ceramics nrog cov ntsiab lus melting siab yuav xav tau ntau dua sintering kub thiab ntev tuav lub sij hawm kom paub meej tias qhov yuav tsum tau ceev thiab kev ua tau zoo. Piv txwv li, magnesium oxide ceramics muaj lub siab melting point, thiab lawv cov txheej txheem sintering yuav tsum muaj qhov kub thiab txias.
Kev siv cov khoom siv ntxiv: txhawm rau txhim kho kev ua haujlwm lossis kev tsim cov txheej txheem ntawm ceramics, qee qhov kev txhawb nqa sintering, hloov cov khoom siv ntxiv, thiab lwm yam. Hom thiab tus nqi ntawm cov tshuaj ntxiv no tseem yuav cuam tshuam los ntawm kev ua haujlwm ntawm cov ceramics. Piv txwv li, txhawm rau txo qhov kub ntawm sintering los yog txhim kho lub toughness ntawm ceramics, tej zaum yuav ntxiv additives.
Kev ua haujlwm nyuaj: Qee cov oxide ceramics yuav muaj siab hardness los yog brittleness, uas yuav ua rau kom qhov nyuaj ntawm kev ua. Cov txheej txheem tshwj xeeb xws li kev sib tsoo, txiav, polishing, thiab lwm yam yuav tsum tau ua thaum lub sijhawm tsim khoom kom tsis txhob tawg lossis puas tsuaj rau cov ceramic. Piv txwv li, beryllium oxide ceramics yog tshuaj lom, tab sis lawv muaj cov thermal conductivity thiab cov khoom siv hluav taws xob zoo heev, thiab siv rau qee qhov tshwj xeeb. Txawm li cas los xij, kev saib xyuas tshwj xeeb yuav tsum tau them rau kev tiv thaiv thiab kev ntsuas kev nyab xeeb thaum ua haujlwm.
Atmosphere tswj: Atmosphere tswj kuj tseem ceeb thaum lub sij hawm sintering. Qee cov oxide ceramics tsuas yog ua tau zoo hauv qhov tshwj xeeb oxidizing lossis txo qhov cua. Piv txwv li, sintering ib co ceramics nyob rau hauv ib tug txo qhov cua yuav zam oxidation ntawm tej yam Cheebtsam, yog li txhim kho lawv cov khoom hluav taws xob.
Cov khoom ntawm oxide ceramics txiav txim siab ntau qhov kev sib txuas hauv cov txheej txheem tsim khoom, suav nrog cov khoom siv raw xaiv, molding txoj kev, sintering tej yam kev mob, additive siv, ua thiab huab cua tswj, thiab lwm yam. tau cov khoom siv ceramic nrog rau qhov kev ua tau zoo thiab zoo.
Yog tias koj xav nkag siab txog qhov cuam tshuam ntawm cov khoom ntawm oxide ceramics ntawm lawv cov txheej txheem tsim khoom, koj tuaj yeem ua raws li www.ceramicstimes.com!