Abstract: Titanium alloy is widely used in military and civil fields because of its high strength, corrosion resistance and high specific strength. However, high temperature oxidation reaction will occur when it is used in a high temperature environment, which reduces its performance and limits its application range.Ceramic coatings are prepared in situ on the surface of titanium alloy by means of Micro⁃arc oxidation(MAO) technique. The combining capability of ceramic layer and metal substrate is very strong, has good wear resistance, corrosion resistance and resistance to high temperature and other characteristics, the technological process is simple and efficient, low cost and is friendly to the environment, can greatly improves the oxidation resistance of titanium alloy, prolong its service at high temperatures.This paper reviews the research status of micro⁃arc oxidation technology in the field of high temperature oxidation resistance of titanium alloys.The influences of reaction parameters, electrolyte, reaction time and power mode on the structure and high temperature oxidation resistance of micro⁃arc oxide ceramic coatings are summarized.

Key words: Titanium alloy, Micro?arc oxidation, Ceramic coating, High?temperature oxidation, Research status

摘要： 钛合金因具备高强度、耐蚀性及比强度高等特点被广泛应用于军用及民用等各个领域。但是，其在高温环境使用时会发生高温氧化反应，导致其性能降低，限制了它的使用。微弧氧化（MAO）技术可使钛合金表面原位生长一层致密的氧化膜，膜层与金属基体结合能力强，拥有一定的耐磨、耐蚀及抗高温等特性，且其工艺流程简单高效、成本低而环保，可明显提高钛合金的抗氧化性，延长其在高温条件下的服役时间。综述了MAO技术在钛合金抗高温氧化领域的研究现状，总结了反应参数、电解液、微弧氧化反应时间及电源模式等条件对微弧氧化陶瓷膜层结构和抗高温氧化性能的影响。

关键词: 钛合金, 微弧氧化, 陶瓷膜层, 高温氧化, 研究现状