Zirconia thiab alumina yog cov thawj coj zoo tshaj plaws hauv cov khoom siv tshiab ceramic uas muaj ntau cov kev ua yeeb yam zoo, yog li lawv tau thov nyob rau hauv ntau ntawm kev lag luam. Tom qab ntawd koj yuav tsum xaiv cov khoom siv twg? Ntawm no yog qhov sib txawv ntawm zirconia thiab alumina.
Zirconia ceramics yog hom tshiab ntawm ceramics, thiab nws feem ntau muab faib ua peb hom: magnesium stabilized zirconia ceramics, cerium stabilized zirconia thiab yttrium stabilized zirconia. Lub zirconia ceramic tsis yog tsuas yog tau dhau los ua kev tshawb fawb hauv kev tshawb fawb hauv kev tshawb fawb, tab sis kuj tau siv dav hauv kev lag luam kev lag luam vim nws zoo heev lub cev thiab tshuaj. Thiab nws yog cov khoom siv tseem ceeb ntawm cov roj refractory, cov cuab yeej kub kub thiab cov khoom siv hluav taws xob. Nyob rau tib lub sijhawm, zirconia ceramic yog cov khoom tsim nyog tshaj plaws los ua ceramic txheej thiab kub kub refractory cov khoom ntawm ntau cov hlau oxide ceramic khoom.
Alumina ceramic yog hom khoom siv ceramic nrog Al2O3 yog cov siv lead ua lub ntsiab. Alumina ceramics muaj cov cwj pwm zoo, kev siv lub zog thiab qhov kub thiab qhov siab tsis kam, thiab tuaj yeem siv cov outick zaj duab xis sib xyaw ua ke. Qhov tseem ceeb tshaj plaws nco ntsoov ntawm no yog tias nws yuav tsum tau ntxuav los ntawm ultrasonic. Alumina ceramic tau siv ntau dua thiab dav siv hauv zej zog niaj hnub vim tias nws ua tau zoo tshaj.
Qhov txawv ntawm zirconia thiab alumina:
1, volumetric ntom ntawm zirconia yog 6.05g / cm3, thaum uas ntawm alumina tsuas yog 3.7g / cm3.
2, Lub thermal conductivity ntawm zirconia ceramic yam ntxwv ntu yog 2W / mk (chav kub), thiab lub thermal conductivity ntawm alumina yog 20W / m • K (20 ℃). Yog li feem ntau, zirconia yog cov khoom siv rwb thaiv tsev thermal thiab alumina yog cov khoom siv thermal conductivity.
3, Zirconia muaj zog ntau dua li alumina nyob rau hauv cov yam ntawm toughness, khoov kuj thiab compressive kuj.
