2Cr13钢表面激光熔覆Co基合金组织及其性能

稀有金属材料与工程, 2001, 30(3): 220-223.

2Cr13钢表面激光熔覆Co基合金组织及其性能

张松 ^1, , 张春华 ^2, , 文忠 ^3, , 吴维 ^4, , 王茂才 ^5,

1.沈阳工业大学,

2.沈阳工业大学,

3.香港理工大学香港

4.中国科学院

5.中国科学院

关键词：激光熔覆 , 钴基合金 , 磨损 , 硫酸盐热腐蚀

Microstructure and Performance of a Laser Clad Co-Based Alloy

采用横流连续波2KW CO2激光在2Cr13不锈钢表面进行激光熔覆处理,对熔覆层的组织结构、磨损及高温PbSO4盐热腐蚀性能进行了系统研究.试验结果表明,表面激光熔覆Co基合金后,其耐磨粒磨损性能、高温PbSO4盐热腐蚀性能均提高了2.5倍以上.熔覆层的热腐蚀机制是沿晶腐蚀及硫化-氧化循环进行造成的剥落型腐蚀破坏.

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