化学成分ω/% | Al2O3>72 | MgO>11 | SiO2<9.5 |
热处理条件 | 110℃,24h | 1000℃,3h | 1550℃,3h |
体积密度/g·cm3 | >2.90 | >2.88 | >2.80 |
显气孔率/% | <16 | 19 | 12 |
耐压强度/MPa | >60 | >70 | >60 |
抗折强度/MPa | >9.0 | >8.0 | >8.0 |
永久线变化率/% | 0~0.1 | 0~+0.2 | +0.8~+1.7 |
荷重软化温度/℃(0.2MPa,0.6%) | >1410 | ||
抗爆裂温度/℃ | >450 | ||
加水量/% | 5~6 |
材质 | 烧结白刚玉 | 电熔白刚玉 | 电熔棕刚玉 | |
ω(Al2O3)/% | 91~92 | 91~92 | 89~90 | |
ω(MgO)/% | 6~7 | 6~7 | 6~7 | |
烧后线变化率/% | 110℃,24h | -0.03 | -0.00 | -0.00 |
1000℃,3h | -0.03 | -0.03 | -0.03 | |
1500℃,3h | +0.06 | +0.05 | +0.25 | |
抗折强度/MPa | 110℃,24h | 8.0 | 6.0 | 7.0 |
1000℃,3h | 11.0 | 8.0 | 8.0 | |
1500℃,3h | 24.0 | 20.0 | 13.0 | |
显气孔率/% | 110℃,24h | 16.0 | 17.0 | 16.0 |
1000℃,3h | 21.0 | 21.0 | 21.0 | |
1500℃,3h | 23.5 | 24.0 | 21.5 | |
体积密度/g·cm3 | 110℃,24h | 2.90 | 3.00 | 2.99 |
1000℃,3h | 2.85 | 2.90 | 2.97 | |
1500℃,3h | 2.83 | 2.85 | 2.92 | |
加水量/% | 6.5~7 | 6.5~7 | 6~6.5 |