項目 | 鋁硅質(zhì) | 碳化硅質(zhì) | 鋯鉻剛玉質(zhì) | ||||||
---|---|---|---|---|---|---|---|---|---|
NMJ-1 | NMJ-2 | NMJ-3 | NMJ-4 | NMJ-5 | NMJ-6 | NMJ-7 | NMJ-8 | ||
(Al2O3)/ % > | - | - | 60 | 65 | 70 | - | - | 75 | |
(SiO2)/%> | 60 | 40 | - | - | - | - | - | - | |
(SiC)/%> | - | - | - | - | - | 40 | 80 | - | |
(Cr2O3)/ %> | - | - | - | - | - | - | - | 3 | |
(ZrO2)/%> | - | - | - | - | - | - | - | 2 | |
體積密度/(g/cm3)> | 110℃X24h烘干后 | 1.90 | 2.00 | 2.40 | 2.60 | 2.80 | 2.50 | 2.60 | 2.85 |
常溫耐壓強度/MPa> | 110℃X24h烘干后 | 45 | 60 | 55 | 60 | 65 | 70 | 75 | 75 |
1 000℃X3h燒后 | 60 | 70 | 80 | 90 | 100 | 100 | 110 | 110 | |
常溫抗折強度/MPa> | 110℃X24h烘干后 | 6 | 8 | 7 | 8 | 9 | 9 | 9 | 9 |
1 000℃X 3h燒后 | 8 | 12 | 9 | 11 | 13 | 13 | 14 | 13 | |
加熱永久線變化/% | 1000℃X3h燒后 | -0.3~+0.3 | |||||||
常溫耐磨性/ cm3< | 1 000℃X3h燒后 | 10.0 | 8.0 | 9.0 | 8.0 | 7.0 | 6.0 | 5.0 | 6.0 |
抗熱震性 | (1000℃水冷)/次> | 30 | 20 | 20 | 20 | 25 | 30 | 35 | 25 |
導(dǎo)熱系數(shù)(1000℃時參考值)/[W/(m·K)] | 0.6~ 1.0 | 0.8~ 1.1 | 1.2~ 1.6 | 1.3~ 1.7 | 1.4~ 1.8 | 3~6 | 7~10 | 2~3 | |
推薦最高使用溫度/℃ | 1200 | 1200 | 1400 | 1450 | 1500 | 1450 | 1650 | 1650 |