Cov khoom siv ceramic Sic tsis yog tsuas muaj cov khoom siv zoo heev ntawm chav tsev kub, xws li lub zog khoov siab, tiv taus oxidation zoo heev, tiv taus corrosion zoo, tiv taus hnav siab thiab coefficient qis, tab sis kuj muaj cov khoom siv zoo tshaj plaws ntawm qhov kub siab (lub zog, tiv taus creep, thiab lwm yam) ntawm cov ntaub ntawv ceramic paub. Kub nias sintering, tsis nias sintering, kub isostatic nias sintering cov ntaub ntawv, qhov tseem ceeb tshaj plaws ntawm silicon carbide yog lub zog kub siab, cov khoom siv ceramic ib txwm ntawm 1200 ~ 1400 degrees Celsius lub zog yuav raug txo qis, thiab silicon carbide ntawm 1400 degrees Celsius lub zog khoov tseem khaws cia ntawm qib siab dua ntawm 500 ~ 600MPa, yog li qhov kub ua haujlwm tuaj yeem ncav cuag 1600 degrees Celsius; Silicon carbide phaj qauv tawv thiab brittle, coefficient nthuav dav yog me me, txias thiab kub tsis kam, tsis yooj yim rau deformation. Silicon carbide yog qhov tsawg tshaj plaws, yog li cov khoom siv ceramic ua los ntawm silicon carbide yog lub teeb tshaj plaws.
Alumina ceramic yog ib hom alumina (Al2O3) ua lub cev tseem ceeb ntawm cov khoom siv ceramic, siv rau hauv cov voj voog tuab. Alumina ceramics muaj kev coj ua zoo, lub zog kho tshuab thiab tiv taus kub siab. Nws yuav tsum tau sau tseg tias yuav tsum tau ntxuav ultrasonic. Nws qhov kev tiv taus hnav yog 266 npaug ntawm cov hlau manganese thiab 171.5 npaug ntawm cov hlau cam khwb cia chromium siab. Alumina ceramic yog ib hom khoom siv rwb thaiv tsev zoo, uas feem ntau siv los ua cov ntawv rwb thaiv tsev ceramic, lub nplhaib rwb thaiv tsev thiab lwm yam khoom. Alumina ceramics tuaj yeem tiv taus kub siab txog li 1750 ℃ (alumina cov ntsiab lus ntau dua 99%).
Lub sijhawm tshaj tawm: Lub Ob Hlis-14-2023