氮化物涂层对钛合金抗循环氧化性能的影响

中国腐蚀与防护学报, 2012, 32(1): 7-12.

氮化物涂层对钛合金抗循环氧化性能的影响

1.1. 沈阳航空航天大学航空宇航工程学院沈阳 1101362. 中国科学院金属研究所金属腐蚀与防护国家重点实验室沈阳 110016>

1.1. Shenyang Aerospace University, School of Aerospace Engineering, Shenyang 1101362. State Key Laboratory for Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016>

关键词：多弧离子镀 , Ti_0.5Al_0.5N/Ti_0.7Al_0.3N double-layered film , TiAlSiN film , Ti6Al4V alloy , cyclic oxidation

EFFECT OF NITRIDE COATINGS ON THE CYCLIC OXIDATION BEHAVIOR OF TI6AL4V ALLOY

CHEN Qian , XIN Li , TENG Yingyuan , ZHU Shenglong , WANG Fuhui

Keywords： arc ion plating(AIP) , Ti_0.5Al_0.5N/Ti_0.7Al_0.3N复合涂层 , TiAlSiN涂层 , Ti6Al4V , 循环氧化

用多弧离子镀技术在Ti6Al4V钛合金表面沉积Ti_0.5Al_0.5N/Ti_0.7Al_0.3N复合涂层和Ti_0.6Al_0.3Si_0.1N涂层，研究其在550℃~750℃下的抗循环氧化性能。结果表明，TiAlSiN涂层以及Ti_0.5Al_0.5N/Ti_0.7Al_0.3N复合涂层在550℃和650℃氧化后表面形成薄而连续的保护性富铝氧化膜，显著提高了Ti6Al4V的抗氧化性能。在750℃下，TiAlSiN涂层涂敷的Ti6Al4V依然保持着优异的抗循环氧化性能，而Ti_0.5Al_0.5N/Ti_0.7Al_0.3N复合涂层却不能为钛合金提供有效的防护。

Ti_0.5Al_0.5N/Ti_0.7Al_0.3N double-layered film and Ti_0.6Al_0.3Si_0.1N film were deposited on Ti6Al4V alloy by the arc ion plating (AIP) method. It was found that the deposition of the films of the two types significantly improved cyclic oxidation resistance of the Ti6Al4V alloy at 550℃ and 650℃, due to the formation of a thin and continuous Al₂O₃-rich scale. At 750℃, a good cyclic oxidation resistance still remained for the Ti_0.6Al_0.3Si_0.1N-coated Ti6Al4V but not for the Ti_0.5Al_0.5N/Ti_0.7Al_0.3N-coated alloy.

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