中国激光, 2002, 29 (s1): 519, 网络出版: 2013-02-23  

稀土对激光熔覆镍基金属陶瓷复合层组织及耐蚀性的影响

Effects of RE on Ni-based Metal-ceramic Coatings by Laser Cladding
作者单位
武汉科技大学材料与冶金学院, 武汉 430081
摘要
利用5 kW CO2激光器分别在低碳钢基体表面熔覆含稀土La2O3和CeO2的镍基TiC金属陶瓷复合层,研究 了不同含量的La2O3和CeO2对激光熔覆镍基金属陶瓷复合层组织及性能的影响。研究结果表明,在镍基金属陶 瓷复合层中加入一定量的稀土氧化物La2O3和CeO2均可有效改善熔覆复合层的组织及性能, 减少复合层中的裂纹、孔洞、夹杂;加速复合层中TiC颗粒的溶解和改善TiC颗粒的形状变化,成为较为光滑的表面形状,同时,熔埴复合层的组织及硬度更加均匀。
Abstract
The Ni-based metal-ceramic coatings on the surface of mild steel were cladded by a high power CO2 laser. The effects of rare-earth oxide La2O3 and CeO2 on microstructure and properties of Ni-based metal-ceramic coatings were investigated. The result shows that the microstructure and property of clad coatings with RE-oxide were balanced and better compared with the coatings without RE-oxide, the crackle, hole and entrapment in the coatings were reduced and TiC particles were slippy.

潘应君, 李安敏, 许伯藩. 稀土对激光熔覆镍基金属陶瓷复合层组织及耐蚀性的影响[J]. 中国激光, 2002, 29(s1): 519. PAN Ying-jun, LI An-min, XIU Bo-fan. Effects of RE on Ni-based Metal-ceramic Coatings by Laser Cladding[J]. Chinese Journal of Lasers, 2002, 29(s1): 519.

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