航空发动机高温TC4钛合金叶片微弧氧化膜层的制备  

Preparation and Making of Micro-arc Oxidation Coating on High Temperature TC4 Titanium Alloy of Aeroengine

作　　者：苗景国[1] 杜娟[1] 陈尧 Miao Jingguo;Du Juan;Chen Yao(Sichuan Lab of Engineering Aeronautical Material Inspection and Die-forging Technology,Sichuan Engineering Technical College,Deyang,Sichuan,618000,China)

机构地区：[1]四川工程职业技术学院四川省航空材料检测与模锻工艺技术工程实验室,四川德阳618000

出　　处：《装备制造与教育》2021年第2期38-41,共4页Equipment Manufacturing and Education

基　　金：2020年大学生创新创业训练计划项目“表面陶瓷化—为复杂苛刻环境下服役的航空发动机钛合金叶片披上坚硬的外衣”(项目编号:S202012763023)。

摘　　要：在Na_(2)SiO_(3)电解液体系下,对TC4钛合金进行微弧氧化处理,研究了Na_(2)SiO_(3)浓度对膜层厚度、显微硬度、表面和截面形貌以及粗糙度的影响。试验结果表明:在电参数和其他电解液参数一定的条件下,膜层的厚度和硬度均随Na_(2)SiO_(3)浓度的延长在不断增长,且Na_(2)SiO_(3)浓度为15g/L时,膜层厚度值最高达42.5um,膜层硬度值最高达905Hv,膜层粗糙度值最大值达3.530um。Applying plasma electrolytic oxidation treatment on TC4 titanium alloy in condition of Na_(2)SiO_(3)electrolytic liquid system.studied the effect of Na_(2)SiO_(3)concentration on coating thickness,micro hardness,surface,cross section morphology and surface roughness.Results showed that the thickness and hardness of the film increased with the increase of Na_(2)SiO_(3)concentration under certain conditions of electric parameters and other electrolyte parameters,under the formula in Na_(2)SiO_(3)concentration of 15 g/L,coating thickness reached 42.5μm,micro hardness reached 905 HV,coating surface roughness reached 3.530μm.

关 键 词：TC4钛合金 微弧氧化处理 膜层 表面性能 

分 类 号：TG166[金属学及工艺—热处理]