稀土Ce对Cr2O3/Cu复合材料组织和性能的影响

Effect of Rare Earth Ce on Microstructure and Properties of Cr2O3/Cu Composite

摘要:

采用Cu-Cr-Ce预合金粉末进行内氧化反应研究Ce对Cr2O3/Cu复合材料组织和性能的影响。结果表明：在预合金粉中添加适量的Ce，可提高Cr2O3/Cu复合材料的性能，同时明显改善复合材料中Cr2O3在基体中的分布和细化Cr2O3的颗粒，提高Cr2O3/Cu复合材料中Cr2O3的生成率，促进Cr的内氧化。本实验条件下， Ce的最佳添加量为0.1%（质量分数，下同）。

Abstract:

Effect of rare earth Ce on microstructure and properties of Cr2O3/Cu composite was studied by internal oxidization of Cu-Cr-Ce prealloyed powder. The results show that the appropriate Ce addition into prealloyed powder can increase the properties of Cr2O3/Cu composite, improve Cr2O3 distribution in Cu matrix and refine Cr2O3 particles. Meanwhile, Ce addition can increase the yield rate of Cr2O3 and promote internal oxidization of Cr. Under the condition of this experiment, the optimum Ce addition is 0.1% (mass fraction).