采用硅单晶作载体制样,对从几种高速钢中提取的微量粉末进行了X射线定量测定。结果表明,仅用5毫克左右的VC微量粉末,混入等量参考物质ZnO,用上述制样方法与常规制样方法所测得的参比强度K值十分接近。对高速钢M_2、M_2Al和W9Mo3Cr4VAl不同热处理状态下碳化物类型、数量进行了研究,发现它们之间有着不同的溶解规律。 Using silicon single crystal as carrier sample preparation, X-ray quantitative determination of the trace amount of powder extracted from several high-speed steel. The results show that only about 5 mg of VC trace powder mixed with the same amount of reference material ZnO, with the sample preparation method and the conventional method of determination of the reference intensity K value is very close. The types and quantities of carbides under different heat treatment conditions of high-speed steel M_2, M_2Al and W9Mo3Cr4VAl were studied and found to have different dissolution rules.