Zirconia cib yog cov khoom lag luam refractory uas tsim los ntawm kev siv zirconia ua cov khoom siv tseem ceeb. Cov txheej txheem tsim tawm mas suav nrog ob txoj kev tua hluav taws thiab yaj. Muaj peb cov qauv siv lead ua ntawm zirconia: monoclinic, tetragonal, thiab nyhav. Thaum zirconia yog rhuab mus txog 1100 ° C, kev hloov pauv siv lead ua tshwm sim, uas hloov los ntawm hom monoclinic hloov mus rau hom tetragonal, nrog lub ntim ntim tsawg ntawm 7%, thiab hloov mus rau lwm tus. Lub tetragonal zirconia yuav muaj cov ntawv sau lo lus teb saum toj no 2300 ° C. Cov qhov ntom ntawm peb cov qauv siv lead ua yog 5.68 g / cm3 (monoclinic), 6.10 g / cm3 (quaternary), thiab 6.27 g / cm3 (cubic), feem.
Zirconium oxide muaj lub siab tawg, qhov kub siab cov yam ntxwv lub zog, acid thiab alkali corrosion tsis kam.
1 : ntom zirconia cib
Nws yog tsim los ntawm isostatic nias, thiab nws cov ntawv qhia kev ntsuas yog ZrO2> 65%, qhov pom pom qhov siab yog <2.0%, qhov="" ntom="" ntom="" qhov="" loj="" yog="" li="" 4.25g="" cm3,="" thiab="" qhov="" ntsuas="" kub="" hauv="" e="" iav="" tshaj="" 1370="">2.0%,>° C. Nws yog siv hauv E chav tsev iav qhov cub hu rau hauv qab ntawm sab melting qhov twg qhov ntsuas kub ntawm lub khob yog me ntsis qis dua, qhov hloov pauv, hauv qab ntawm txoj kev sib sau, thiab txoj kev sib kis txaus siab tank thiab lub pob dej ntws ua lub cib. Tsis tas li ntawd, ntom ntom zirconium cib kuj tseem siv los ua thim cov cib rau ntom ntom chrome cib.
Xyoo tsis ntev los no, Tuam Tshoj txoj kev lag luam refractory tau tshaj tawm cov cuab yeej technology thiab khoom siv txawv teb chaws, thiab kuj tau tsim sintered compact zirconium cib ua los ntawm isostatic nias, uas tau siv rau cov iav hauv tsev thiab iav fiber ntau cov chav ua noj.
2 : txheem zirconium cib
Cib muaj cov ntsiab lus ZrO2 li ntawm 66% thiab feem ntau ntom ntom ntawm 3.7 g / cm3, thiab muaj zoo thermal stability thiab tshwv tsis kam. Phab ntsa lub hauv siab thiab phab ntsa rov qab ntawm qhov chaw nres nkoj noj qhov chaw uas cov hmoov txhuam yog qhov loj heev, thiab lub hauv siab phab ntsa thiab sab saum toj npog cib thiab cov nplaim hluav taws kub ntawm lub qhov cib thiab cov nplaim ntu qhov chaw tau pom nyob hauv cov khoom siv hluav taws xob melting.
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