偏压梯度TiAlN涂层高温氧化与抗高温粒子冲蚀性能  

High temperature oxidation and high temperature particleerosion resistance of bias-graded TiAlN coating

作　　者：曹鑫 熊能 李聪健 王静静 张鑫 孙小川 CAO Xin;XIONG Neng;LI Congjian;WANG Jingjing;ZHANG Xin;SUN Xiaochuan(High Speed Aerodynamics Institute,China Aerodynamics Research and Development Center,Mianyang 621000,China;Graduate School,Army Engineering University,Nanjing 210007,China)

机构地区：[1]中国空气动力研究与发展中心高速空气动力研究所,四川绵阳621000 [2]陆军工程大学研究生院,南京210007

出　　处：《功能材料》2023年第12期12163-12168,共6页Journal of Functional Materials

基　　金：国家自然科学基金(52205214)。

摘　　要：采用连续偏压的沉积工艺与磁过滤阴极真空弧技术在TC4钛合金表面成功制备偏压梯度TiAlN涂层,对涂层的高温氧化性能与抗高温粒子冲蚀性能分别进行了考核,并对考核前后涂层的表面形貌、成分、相结构变化,以及冲蚀损伤特征进行了测试与表征。结果表明,400℃高温氧化后偏压梯度TiAlN涂层表面颜色加深,且保持完整平滑,无明显损伤;偏压涂层表面氧原子分数为20.9%,质量增加为0.81μg/mm^(2),偏压涂层结构更加致密,抑制氧元素向内扩展,抗氧化性能较bias-50 TiAlN涂层更佳。400℃下高温粒子冲蚀条件下,偏压梯度TiAlN涂层在30°与90°冲蚀角度下的冲蚀率分别为0.26 mg/g、0.24 mg/g,低于bias-50 TiAlN涂层,表现出更加优异的抗高温粒子冲蚀性能;在400℃条件下,钛合金基体与TiAlN涂层未发生明显的氧化损伤,高温粒子冲蚀损伤均为冲蚀主导机制。The bias-graded TiAlN coating was successfully deposited on Ti6Al4V alloy substrates using filtered cathodic vacuum arc(FCVA)technology with the bias-graded deposition method.The high-temperature oxidation performance and high-temperature particle erosion resistance of the coating were evaluated.The changes of surface morphology,composition,phase structure,and erosion damage characteristics of the coating before and after the evaluation were tested and characterized.The results showed that after high-temperature oxidation at 400℃,the surface color of the bias-graded TiAlN coating deepened and remained intact and smooth without significant damage.The oxygen atom fraction on the surface of the bias coating is 20.9% and the mass increase is 0.81μg/mm^(2).The structure of the bias-graded coating is more dense,inhibiting the inward expansion of oxygen elements,and has better antioxidant performance than bias-50 TiAlN coating.Under high temperature particle erosion conditions at 400℃,the erosion rates of bias-graded TiAlN coatings at 30°and 90°erosion angles are 0.26 mg/g and 0.24 mg/g,respectively,which are lower than those of bias-50 TiAlN coatings,exhibiting better resistance to high-temperature particle erosion.At 400℃,there is no significant oxidation damage to the titanium alloy substrate and TiAlN coating,and high-temperature particle erosion damage is the dominant mechanism of erosion.

关 键 词：TIALN涂层 偏压梯度结构 TI-6AL-4V合金 高温氧化性能 高温粒子冲蚀性能 

分 类 号：TG156.88[金属学及工艺—热处理] TB114.2[金属学及工艺—金属学]