This study explored the effects of Ti₃SiC₂ on the microstructure and properties of laser cladding coatings using X-ray diffractometer, scanning electron microscope, electrochemical workstation, and UMT-2 wear tester analyses. It was found that with the addition of Ti₃SiC₂, the reinforcing phases in the composite coating were TiC, Ti(B,C)₂, honeycomb-like (Cr, Fe)₂₃C₆, and a novel composite ceramic with an “eyeball” structure, which had an inside core of Al₂O₃ and TiC outer surrounding structure. The microhardness, wear, and corrosion resistance of the composite coating were about 1.35, 2, and 4.3 times those of the original coating, respectively. The main wear mechanisms of the original coating were severe fatigue spalling and microcutting, while the main mechanisms of the composite coating were slight microcutting and the formation of the transferred film.

中文翻译：

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Ti3SiC2的添加对激光熔覆复合涂层组织和性能的影响

本研究利用X射线衍射仪，扫描电子显微镜，电化学工作站和UMT-2磨损测试仪分析了Ti ₃ SiC ₂对激光熔覆层组织和性能的影响。结果发现，添加Ti ₃ SiC _2时，复合涂层中的增强相为TiC，Ti（B，C）₂，蜂窝状（Cr，Fe）₂₃ C ₆以及新型的复合陶瓷。 “眼球”结构，内部具有Al ₂ O ₃和TiC外部周围结构。复合涂层的显微硬度，耐磨性和耐腐蚀性分别是原始涂层的约1.35、2和4.3倍。原始涂层的主要磨损机理是严重的疲劳剥落和微切，而复合涂层的主要磨损机理是轻微的微切和转印膜的形成。