High-aluminaalumina ceramic sib tsoo pobyog cov khoom siv ua los ntawm cov khoom siv ceramic engineering uas feem ntau yog ua los ntawm txhuas oxide (Al₂O₃), feem ntau muaj cov ntsiab lus tshaj 90%. Lawv qhia tau tias muaj kev tawv siab, tiv taus kev hnav zoo, ruaj khov tshuaj lom neeg zoo heev, thiab tsis muaj kuab paug, ua rau lawv siv tau dav hauv cov txheej txheem sib tsoo ntub lossis qhuav rau kev lag luam xws li ceramics, xim, tshuaj lom neeg, kev khawb av, thiab cov khoom siv hluav taws xob. Nrog rau qhov ceev feem ntau siab dua 3.6 g / cm³ thiab Vickers hardness txog li HV1500 lossis siab dua, lawv txhim kho kev sib tsoo zoo thaum txo kev siv xov xwm.
Lawv cov txiaj ntsig tseem ceeb yog kev txhim kho kev sib tsoo zoo thiab kev lag luam zoo. Kev tawv siab (Mohs hardness qib 9) ua kom cov khoom tawv tawg sai; lub microstructure sib xws muab cov nqi hnav tsis tu ncua thiab ntev lub neej kev pabcuam. Kev tsis muaj tshuaj lom neeg zoo heev tso cai rau kev tiv taus cov kua qaub thiab alkalis muaj zog, tiv thaiv kev ua qias tuaj ntawm cov khoom hauv av. Cov hlau seem tsawg heev (feem ntau qis dua 0.01%) ua rau lawv tsim nyog rau cov ntawv thov purity-sensitive, xws li cov khoom siv roj teeb lithium, cov iav zoo, thiab cov khoom siv hluav taws xob ceramic.
Cov txheej txheem tsim khoom suav nrog kev npaj hmoov uas tswj hwm nruj, kev nias isostatic, thiab kev sintering kub siab kom ua tiav qhov ntom ntom siab, xyuas kom meej tias muaj porosity tsawg thiab muaj zog tawg. Kev tshuaj xyuas zoo suav nrog qhov tseeb ntawm qhov ntev, qhov sib npaug, qhov nyuaj, thiab kev tiv thaiv kev cuam tshuam kom ua tau raws li qhov xav tau ntawm ntau yam khoom siv sib tsoo thiab cov txheej txheem. Kev xaiv cov lus qhia kom raug (piv txwv li, txoj kab uas hla ntawm 1 hli txog 50 hli) thiab cov piv ntawm kev sau tuaj yeem ua kom zoo dua qhov sib tsoo zoo thiab kev siv hluav taws xob zoo.
Nrog rau kev thov kom muaj qhov loj me me thiab qhov huv dua hauv kev txhim kho kev lag luam, cov pob zeb sib tsoo ceramic alumina siab tau dhau los ua cov khoom siv sib tsoo tseem ceeb hauv cov tshuaj niaj hnub thiab cov khoom siv tshiab. Los ntawm kev txhim kho cov khoom zoo thiab txo cov nqi tag nrho, lawv muab cov kev daws teeb meem txhim khu kev qha rau kev lag luam ua tiav. Yav tom ntej, kev ua kom zoo dua ntawm cov qauv khoom siv thiab kev nce qib hauv kev siv tshuab hloov kho qhov chaw yuav nthuav dav lawv daim ntawv thov.
Lub sijhawm tshaj tawm: Lub Ob Hlis-11-2026