碳化硅砖的各项技术指标
项目
氧化物结合碳化硅转
oxide bond sic brick
刚玉碳化硅砖
cor-silicon carbide brick
莫来石碳化硅砖
mullite-sic brick
硅莫砖
sic%
≥90
≥70
≥65
≥20
al2o3%
-
-
≥20
≥65
体积密度g/cm3
bulk density
≥2.5
≥2.6
≥2.3
≥2.55
显气孔率%
apparent porosity
≤17
≤22
≤20
≤19
常温耐压强度mpa
cold crushing strength
≥100
≥100
≥80
≥80
荷重软化开始温度℃(0.2mpa ,0.6%)
refractoriness under load
≥1650
≥1700
≥1600
≥1600
导热系数(1000℃),w/(m·k)
thermal conductivity
10-15
6
-
-