Sic ceramics tsis tsuas yog muaj cov cuab yeej zoo heev ntawm chav tsev kub, xws li lub zog khoov siab, zoo heev oxidation tsis kam, zoo corrosion kuj, siab hnav tsis kam thiab tsis tshua muaj kev sib txhuam coefficient, tab sis kuj muaj qhov zoo tshaj plaws txhua yam khoom ntawm qhov kub thiab txias (lub zog, creep resistance, thiab lwm yam) ntawm cov khoom siv ceramic paub. Kub nias sintering, uas tsis yog-nias sintering, kub isostatic nias sintering cov ntaub ntawv, tus yam ntxwv loj tshaj ntawm silicon carbide yog kub lub zog, zoo tib yam ceramic khoom ntawm 1200 ~ 1400 degrees Celsius lub zog yuav txo qis, thiab silicon carbide ntawm 1400 degrees Celsius dabtsi yog khoov zog. tseem khaws cia ntawm qib siab dua ntawm 500 ~ 600MPa, yog li kev ua haujlwm kub tuaj yeem ncav cuag 1600 ° C; Silicon carbide phaj kev ntxhib los mos thiab nkig, expansion coefficient 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 qhov sib sib zog nqus.
Alumina ceramic yog ib hom alumina (Al2O3) ua lub cev tseem ceeb ntawm cov khoom siv ceramic, siv hauv cov yeeb yaj kiab tuab sib xyaw ua ke. Alumina ceramics muaj zoo conductivity, txhua yam muaj zog thiab kub tsis kam. Nws yuav tsum tau muab sau tseg tias yuav tsum tau ntxuav ultrasonic. Nws hnav tsis kam yog 266 npaug ntawm manganese hlau thiab 171.5 npaug ntawm cov chromium cam khwb cia hlau siab. Alumina ceramic yog ib hom zoo insulating khoom, uas yog feem ntau siv los ua ceramic insulating ntawv, insulating nplhaib thiab lwm yam. Alumina ceramics tuaj yeem tiv taus kub txog 1750 ℃ (alumina cov ntsiab lus ntau dua 99%).
Post lub sij hawm: Feb-14-2023