激光与光电子学进展, 2019, 56 (7): 071402, 网络出版: 2019-07-30
TiO2/CeO2对Ni基激光熔覆层组织和性能的影响 下载: 986次
Effect of TiO2/CeO2 on Microstructures and Properties of Ni-Based Laser Cladding Layers
激光光学 激光熔覆 Ni基合金 显微组织 显微硬度 耐腐蚀性 laser optics laser cladding Ni-based alloy microstructure microhardness corrosion resistance
摘要
通过同步送粉方式在Q235钢基材表面制备了添加不同质量分数纳米TiO2和CeO2的Ni基激光熔覆层,分析了熔覆层的表面形貌、显微组织和物相组成,并测定了熔覆层的硬度和耐腐蚀性。结果表明,在Ni基合金粉末中同时加入TiO2和CeO2,可以充分发挥二者的性能,得到组织均匀细密、无裂纹、耐腐蚀性较高的熔覆层,也可改善Ni基激光熔覆层的组织结构并提高其性能。
Abstract
To improve the microstructures and properties of Ni-based laser cladding layers, the Ni-based laser cladding layers with different mass fractions of nano TiO2 and CeO2 are prepared on the Q235 steel substrate surfaces by the synchronous feeding of laser cladding powder. The surface morphologies, microstructures and phase compositions of laser cladding layers are analyzed and the microhardness and corrosion resistance of laser cladding layers are measured as well. The research results show that the simultaneous addition of TiO2 and CeO2 in the Ni-based alloy powder can fully integrate the properties of both and make well-distributed, fine, crack-free and corrosion-resistant laser cladding layers obtained.
任仲贺, 武美萍, 李广阳, 夏思海, 唐又红. TiO2/CeO2对Ni基激光熔覆层组织和性能的影响[J]. 激光与光电子学进展, 2019, 56(7): 071402. Zhonghe Ren, Meiping Wu, Guangyang Li, Sihai Xia, Youhong Tang. Effect of TiO2/CeO2 on Microstructures and Properties of Ni-Based Laser Cladding Layers[J]. Laser & Optoelectronics Progress, 2019, 56(7): 071402.