Muaj ntau txoj hauv kev tseem ceeb los txhim kho qhov tawv ntawm alumina ceramics:
1. Zirconia toughening: Qhov no yog txoj kev toughening uas siv ntau tshaj plaws. Thaum ntxiv zirconia (ZrO2) rau hauv alumina, nws qhov toughness tuaj yeem txhim kho tau zoo heev. Qhov toughening effect feem ntau yog los ntawm cov txheej txheem xws li kev ua kom zoo ntawm alumina grain matrix, qhov kev hloov pauv theem toughening ntawm zirconia, microcrack toughening, thiab kev tsav tsheb tawg thiab bifurcation.
2. Cov plaub hau thiab cov fiber toughening: Cov plaub hau yog cov siv lead ua los ntawm cov av nplaum uas muaj qhov sib piv siab, thiab qhov ntev ntawm cov fiber ntev dua li cov plaub hau ceramic ntau zaus. Lawv txhua tus tuaj yeem ntxiv rau alumina ceramics ua cov khoom txhawb nqa. Kev ntxiv cov plaub hau lossis cov fiber tuaj yeem ua rau qhov tawg ntawm qhov chaw, uas yog, ua rau qhov tawg ntawm qhov sib kis. Thaum qhov tawg txuas mus rau cov fibers (whiskers), rub tawm, tshem tawm, thiab tawg ntawm cov fibers (whiskers) yuav tshwm sim, yog li siv lub zog tawg thiab txhim kho qhov tawv ntawm cov av nplaum.
3. Kev ua kom cov khoom me me tawv: Ntxiv cov khoom me me uas muaj cov qauv siab elastic (xws li SiC, TiC, TiN, thiab lwm yam) rau cov khoom siv alumina tuaj yeem ua rau cov kab nrib pleb tig thiab sib cais thaum cov khoom tawg, siv lub zog tawg, yog li txhim kho kev tawv. Txawm hais tias qhov cuam tshuam ntawm cov khoom me me tsis zoo li cov whiskers thiab fibers, kev sib xyaw ua ke ntawm cov khoom siv raw thiab sintering densification yooj yim dua thiab yooj yim dua li cov fiber thiab whisker composites.
4. Alumina nws tus kheej tawv: Cov khoom siv ua los ntawm cov hmoov alumina nanoscale qhia tau tias muaj superplasticity zoo heev ntawm qhov kub qis. Cov khoom siv nano no tuaj yeem txhim kho cov duab thiab cov ciam teb ntawm cov noob ceramic, yog li ua rau nws tawv dua.
5. Qhia txog theem ob: Qhia txog theem ob rau hauv lub matrix ntawm alumina ceramics kom nws puv cov ciam teb ntawm alumina, uas yog qhov zoo rau kev thaiv kev nthuav dav ntawm cov kab nrib pleb thiab yog li txhim kho qhov tawg ntawm cov ceramics. Piv txwv li, zirconia-toughened alumina siv txoj kev no.
6. Ntxiv cov alumina noob siv lead ua: Kev ntxiv cov alumina noob siv lead ua tuaj yeem txhawb kev loj hlob anisotropic ntawm cov noob siv lead ua thiab tsim cov flaky lossis columnar siv lead ua noob, zoo li whiskers, uas tuaj yeem ua rau tawg deflection, noob rub tawm, thiab kev sib txuas hardening ntawm ceramics. lub luag haujlwm.
Cov txheej txheem no siv tau ib leeg lossis ua ke los txhim kho qhov tawv ntawm alumina ceramics. Qhov kev xaiv tshwj xeeb nyob ntawm qhov kev ua tau zoo, tus nqi thiab cov xwm txheej ntawm daim ntawv thov. Tam sim noZTA toughed alumina ceramicslos ntawm Chemshun Ceramics chaw tsim khoom tuaj yeem ua tau raws li koj qhov kev xav tau siab dua
Lub sijhawm tshaj tawm: Tsib Hlis-10-2024