钛合金表面激光熔覆技术的研究及展望

本文基于钛合金表面激光熔覆技术,综述了具有良好耐磨性、耐蚀性、抗高温氧化和生物活性等功能性涂层的研究进展,分析了熔覆层的选材规律与强化机理,以及激光熔覆仿生耦合单元与多功能涂层的优势与必要性。针对熔覆层裂纹和气孔等主要缺陷产生的原因,提出了预热基体、后处理、调整工艺参数和制备梯度涂层等改进措施,并对钛合金表面激光熔覆技术未来的应用和发展趋势进行了展望,旨在推进这一表面涂层技术的创新发展,为制备高质量、高效率、低成本的新型熔覆涂层的研究提供新思路。

Research and Prospect of Laser Cladding Technology on Titanium Alloy Surface

Based on laser cladding technology of titanium alloy surface, the research progress of functional coatings with good wear resistance, corrosion resistance, high temperature oxidation resistance and biological activity is reviewed. And analyzes the law of material selection and strengthening mechanism of cladding layer. The advantages and necessity of laser cladding biomimetic coupling unit and multifunctional coating are discussed. Aiming at the causes of major defects such as cracks and pores in the cladding layer, improvement measures such as preheating the substrate, post-treatment, adjusting process parameters and preparing gradient coatings are proposed. Meanwhile, the future application and development trend of laser cladding technology on titanium alloy surface are prospected in order to promote the innovation and development of this surface coating technology and provide new ideas for the preparation of high quality, high efficiency and low cost new cladding coating.