碳化物在高速钢中占有很大的比例,对性能有重要的影响,因此,对碳化物的研究十分重要。本文用扫描电镜研究了不同状态高速钢中的碳化物。扫描电镜的优点是分辨率高,放大倍数高,能方便地用来研究碳化物的类型、形状、尺寸以及碳化物上的缺陷和细节等,并且,制样简单。扫描电镜是研究碳化物的有力工具,对改进高速钢的质量能起重要的作用。 Carbides in high-speed steel occupy a large proportion of the performance has a significant impact, therefore, the study of carbide is very important. In this paper, the scanning electron microscopy of different states of high-speed steel carbides. Scanning electron microscopy has the advantages of high resolution, high magnification, can be easily used to study the type of carbide, shape, size and carbide defects and details, and the sample preparation is simple. SEM is a powerful tool for studying carbides and plays an important role in improving the quality of HSS.