Alumina ceramics siv dav hauv ntau qhov chaw vim lawv qhov zoo xws li kev tawv siab thiab kev ruaj khov tshuaj lom neeg muaj zog. Txawm li cas los xij, lawv qhov brittleness txwv lawv qhov kev siv. Toughened alumina ceramics tau tshwm sim thiab daws qhov teeb meem no tau zoo.
Cov khoom siv alumina ceramic uas ruaj khovtuaj yeem ua kom tawv dua ntau txoj kev. Cov feem ntau suav nrog zirconia toughening, uas ua rau kom tawv dua los ntawm kev ntxiv ZrO₂ rau alumina thiab siv nws qhov kev hloov pauv theem thiab lwm yam txheej txheem; whisker thiab fiber toughening, ntxiv SiC, Si₃N₄ whiskers lossis C, SiC fibers kom nce cov channel kis kab thiab siv lub zog tawg; particle toughening yog ntxiv cov khoom me me elastic modulus xws li SiC thiab TiC los tiv thaiv thiab bifurcate kab nrib pleb.
Lub zog flexural thiab lub zog cuam tshuam ntawm cov khoom siv alumina uas tawv tau zoo dua qub heev. Piv txwv li, lub zog flexural ntawm zirconia toughened alumina ceramics tuaj yeem ncav cuag 480MPa, thiab lub zog cuam tshuam yog 7MPam1 / 2.
Hais txog daim ntawv thov, hauv kev kho mob, nws yog siv los tsim cov hniav cog thiab cov pob qij txha cuav vim nws qhov biocompatibility zoo thiab qhov nyuaj siab, uas tuaj yeem txo qhov teeb meem; hauv thaj chaw semiconductor, ua lub hauv paus ntim khoom siv, nws yog siv rau hauv tsheb fais fab IGBTs, thiab lwm yam vim nws cov cua sov zoo heev, rwb thaiv tsev thiab lub zog kho tshuab; hauv cov cuab yeej txiav, nws tuaj yeem ruaj khov ntawm qhov kub siab thiab paub txog kev ua cov hlau cam khwb cia thiab cov hlau sib xyaw. Cov khoom siv alumina tawv tau ci ntsa iab hauv ntau thaj chaw nrog lawv cov kev ua tau zoo heev. Chemshun ceramics muab cov khoom siv alumina tawv nrog kev tiv thaiv kev sib txhuam thiab kev cuam tshuam rau cov khoom siv ntau.
Lub sijhawm tshaj tawm: Lub Ob Hlis-28-2025