The molybdenum alloy reinforced by lanthana particles with the sizes of nanometer and micron was prepared by powder metallurgy.

采用粉末冶金法制备了微寸和准寸的氧化镧粒子增强合金。

Although PM has solved the problem of carbide segregation and crassitude fundamentally, it has complicated technics and extortionate cost, so restricts its application.

粉末冶金虽然从解决了碳化物偏析和粗大的问题，但其工艺复杂，成过高，应用受到限制。