红刚玉颜色紫红色，硬度较强，适合制作切割类的磨具。红刚玉现多为人造制品。
苏北某地超基性岩中，首次发现了红刚玉，少量已达宝石级。
In an ultrabasic rocks in North Jiangsu, corundum was first discovered and some was up to gem grade.
首先，研究了红柱石的粒度和加入量对莫来石-刚玉材料性能的影响。
At first, the effect of particle size and additions of andalusite on mullite-corundum materials were studied.
陶瓷结合剂白刚玉磨具会出现白里显红、红黄、青灰色调，严重影响产品的外观质量。
The white alumina abrasives made with vitrified bond may show red in white, red -yellow or celadon-gray. This will influence on the appearance quality of the products seriously.
应用推荐