Research Progress on Surface Engineering Technology of Aerospace Titanium Alloys
WANG Xin 1, 2 , LUO Xuekun 1, 2 , YU Bo 1, 2 , TANG Zhihui 1, 2
1. Surface Engineering Institution, AECC Beijing Institute of Aeronautical Materials, Beijing 100095, China;
2. Aviation Key Laboratory of Advanced Corrosion and Protection on Aviation Materials, AECC Beijing Institute of Aeronautical Materials, Beijing 100095, China
Titanium alloy is widely used in aerospace parts due to its high specific strength and low density. However, titanium alloys also have weaknesses such as low hardness, poor wear resistance, and poor high-temperature oxidation resistance. Fatigue problems caused by surface stress concentration sensitivity are also prominent. Surface engineering technology needs to be applied to overcome the three major problems of wear, corrosion and fatigue. Here, this article introduces the research progress of wear-resistant coating, anti-oxidation coating and anti-fatigue surface modification technology of titanium alloy in the past ten years, and looks forward to the development trend of technologies, to provide reference for scientific and engineering researches of surface engineering technology.
2022, 
