Yuav ua li cas los txhim kho cov precision machining txheej txheem ntawm alumina hnav-resistant ceramics?

Tam sim no, alumina ceramic cov ntaub ntawv muaj ntau heev nyob rau hauv kev ua lag luam, uas siv cov tshuaj alumina tab sis tsis muab alumina nrog ceramics. Piv nrog rau lwm cov ntaub ntawv nrog tib txoj kev, cov khoom siv alumina ceramic no muaj qhov zoo ntawm thermal conductivity thiab ductility. Txhawm rau txhim kho qhov ua tau zoo ntawm cov khoom, feem ntau cov khoom siv alumina ceramic yuav tsum tau ua tiav tom qab sintering kom tau txais qhov siab dua qhov du. Tab sis alumina ceramics tsis yog cov ntaub ntawv zoo tib yam tom qab tag nrho, yuav ua li cas nws cov txheej txheem machining zoo dua?
Vim lub siab tawv ntawm alumina ceramic cov ntaub ntawv, nws yog ib qho tsim nyog yuav tsum siv cov khoom sib tsoo nyuaj thiab polishing xws li silicon carbide, B4C, los yog pob zeb diamond laum khoom kom tiav cov txheej txheem. Thaum lub sij hawm ua, qhov saum npoo ntawm lubricity ntawm alumina ceramic cov ntaub ntawv yuav tsum tau txhim kho ua ntej.
Nyob rau hauv precision machining ntawm alumina ceramic cov ntaub ntawv, ib tug ntau txoj kev yog zom los ntawm ntxhib mus rau nplua abrasives kauj ruam yog kauj ruam, thiab ces nyob rau hauv sab nrauv polishing, polishing muaj peev xwm xaiv micron alumina micro hmoov los yog pob zeb diamond laum paste me dua 1 μ rau kev sib tsoo thiab polishing. Tau kawg, laser ua thiab ua ultrasonic kuj tuaj yeem ua tiav lub hom phiaj ntawm kev sib tsoo thiab polishing alumina ceramics.
Qhov no yog txhawm rau txhim kho qhov smoothness ntawm alumina ceramics, yog li txhim kho cov neeg kho tshuab lub zog ntawm alumina ceramics, uas yog, ntxiv dag zog rau cov thev naus laus zis ntawm alumina ceramics. Qhov tseeb, cov tsos ntawm alumina ceramics tau txais cov thev naus laus zis xws li hluav taws xob lub tshuab nqus tsev, lub tshuab nqus tsev, lossis cov tshuaj vapor evaporation txheej, uas ua rau alumina ceramics toughened.
Cov txheej txheem no tuaj yeem pleev xim ib txheej ntawm silicon composite zaj duab xis rau saum npoo ntawm alumina ceramics. Tsuas yog los ntawm cua sov ntawm 1200 degree ~ 1580 degree tuaj yeem ua rau alumina ceramics toughened. Rau lub hauv paus no, lub zog txhua yam ntawm lub zog alumina ceramics tuaj yeem txhim kho tau zoo, thiab ultra-siab zog alumina ceramics tuaj yeem tau txais.