铝合金中Al_2O_3的快速分析可以用金相法来进行,分析时采用铍盐、镁盐及其它元素的盐类水溶液来作试制,这些盐水溶液中的氧化物与Al_2O_3形成尖晶石型化合物。往盐中添加盐重量10～15%的水就可制成铍盐、镁盐等过饱和溶液等试剂。配制好的溶液倒入瓷皿中,预热到150～250℃(350℃),硝酸铍预热到100℃,因为 The rapid analysis of Al_2O_3 in aluminum alloy can be carried out by the metallographic method. The analysis uses beryllium salts, magnesium salts and other elements of salt aqueous solution for trial production. The oxides in these brine solutions form spinel-type compounds with Al 2 O 3. Adding salts such as beryllium salts, supersaturated solutions such as magnesium salts, and other reagents by adding 10 to 15% by weight of salt to the salt. Prepared a good solution into the porcelain, preheated to 150 ~ 250 ℃ (350 ℃), beryllium nitrate preheated to 100 ℃, because