冷喷涂增材制造钛及钛合金涂层研究进展

Recent Advances in Cold Spray Additive Manufacturing of Titanium and Titanium Alloy Coatings

摘要:

钛及钛合金因具有密度低、比强度高、耐腐蚀性优异等特点，广泛应用于航空航天和海洋工程等领域。增材制造技术的发展为钛及钛合金复杂构件的制备提供了新途径，冷喷涂作为一种固态增材制造技术，凭借其沉积温度低、喷涂速度快、热影响小等优势而备受关注。本文综述了冷喷涂增材制造钛及钛合金涂层的研究现状，介绍了喷涂粉末特性及其对沉积行为的影响，分析了冷喷涂沉积体的组织与性能特点，总结了原位增强和后处理等强化手段的作用机制与效果，为工艺改进和应用拓展提供参考。

Abstract:

Titanium and titanium alloys, owing to their low density, high specific strength, and excellent corrosion resistance, are widely used in aerospace and marine engineering. The development of additive manufacturing has enabled new approaches for fabricating complex titanium and titanium alloy components. As a solid-state additive manufacturing technique, cold spray has attracted considerable attention for its advantages of low deposition temperature, high spraying velocity, and minimal thermal effects. The current research status of cold spray additive manufacturing of titanium and titanium alloy coating was reviewed. The characteristics of feedstock powders and their influence on deposition behavior were introduced. The microstructure and properties of cold-sprayed deposits were analyzed, and the mechanisms and effects of strengthening strategies such as in-situ reinforcement and post-processing were summarized, providing a reference for process improvement and application expansion.