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合成钻石研磨膏是以人造金钢石为主要原料的磨料,经过破碎和严格筛分后,按不同的粒度,用弱碱性膏体水溶性基质混合而成。由于它具有锋锐和快速磨削作用,所以早已作为量、刀具等的研磨磨料。但将其作为金相试样的抛光磨料,目前还不普及。目前试样的抛光材料一般都采用氧化铬。由于抛光时间长,试样中的夹杂物,石墨等往往容易被拉掉,特别是制备有色合金试样,不易得到光洁无痕的抛光表面。
Synthetic diamond abrasive is artificial diamond as the main raw material of abrasive, after crushing and strict screening, according to different particle size, with a weak alkaline paste water-soluble matrix mixture. Because of its sharp and rapid grinding, it has long been used as abrasive, abrasive tools such as the amount. However, it is not yet widely used as a polishing abrasive of a metallographic sample. The current sample of the polishing material are generally used chromium oxide. Due to the long polishing time, inclusions in the sample, graphite, etc. are often easily pulled off, especially the preparation of non-ferrous alloy samples, not easy to get bright and clean polished surface.