Dab tsi yog zirconia ceramics
Zirconia los yog zirconium dioxide (ZrO2) yog crystalline oxide ntawm zirconium. Nws yog xim dawb los yog xim dub thiab feem ntau tshwm sim hauv cov qauv siv lead ua monoclinic. Zirconia yog ib qho ntawm cov ntaub ntawv tshawb fawb tshaj plaws.
Zirconia yog cov khoom siv ceramic nrog ntau yam khoom siv siab heev uas ua rau nws siv tau rau ntau yam khoom siv kho mob, tab sis kuj rau cov lag luam sib txawv rau cov khoom thiab cov khoom uas yuav tsum tau tsim nrog zirconia.
Cov lus nug tshwm sim seb zirconia puas yog ceramic vim nws muaj hlau atoms hauv nws cov qauv, zoo ib yam li lwm hom khoom siv ceramic. Qhov no tso cai rau lub zirconia los ua ke lub siab innate lub zog ntawm cov hlau nrog biocompatibility ntawm ceramic.
Zirconia ceramics tuaj yeem ua tiav rau hauv cov duab geometry hauv cov ntaub ntawv nyoos lossis biscuit. Txawm li cas los xij, cov txheej txheem sintering yuav tsum tau ua kom tag nrho cov ntaub ntawv ua rau cov ntaub ntawv shrinkage txog 20 feem pua. Qhov kev cog lus no txhais tau hais tias nws tsis tuaj yeem tswj hwm nruj heev thaum ua cov txheej txheem presintering.
Yuav kom ua tiav qhov kev ua siab ntev heev, cov khoom siv sintered tag nrho yuav tsum tau ua tiav / hauv av siv cov cuab yeej pob zeb diamond. Hauv cov txheej txheem no, cov cuab yeej siv pob zeb diamond txheej txheej / sib tsoo lub log yog siv los zom cov khoom kom txog thaum cov duab xav tau tsim. Qhov no tuaj yeem yog lub sijhawm siv sijhawm thiab kim txheej txheem vim yog lub hauv paus toughness thiab hardness ntawm cov khoom.
