氩弧原位自生TiC复合涂层组织与抗磨性能研究

采用氩弧熔覆技术在16Mn钢基体上制备原位形成的TiC颗粒增强金属基复合涂层。利用OM、SEM、XRD,对熔敷层显微组织和物相进行分析。结果表明,熔覆层与基体呈冶金结合,无裂纹、气孔等缺陷;原位形成的细小TiC颗粒弥散分布于熔敷层内;显微硬度和耐磨性测试结果表明,涂层具有比较高的硬度和耐磨性。

Microstructure and wear resistance of the argon shielded arc clad in-situ composite coatings

Fe-based composite coating reinforced by TiC particle was prepared on the surface of 16Mn steel by means of argon arc cladding technique. The microstructure of coating was investigated by optical microscope, scanning electron microscope, X- ray diffraction meter. The result shows that excellent bonding between the coating and the carbon steel substrate is ensured by the strong metallurgical interface, and the coating is uniform, continuous and almost defect-free;the finer particles by in-situ synthesis are dispersively distributed in the cladded coating. The argon arc clad composite coating has high hardness and excellent wear resistance.