TC4表面超音速等离子喷涂热障涂层的研究  

Ultrasonic Plasma Sprayed Thermal Barrier Coating on TC4 Alloy Surface

作　　者：周海[1] 陈飞[1] 张建军[1] 万汉城[1] 吕晓静[1] 

机构地区：[1]北京石油化工学院,北京102617

出　　处：《稀有金属材料与工程》2008年第A01期771-773,共3页Rare Metal Materials and Engineering

基　　金：北京市优秀人才培养资助项目(20061D0500500151)

摘　　要：利用超音速等离子喷涂技术在TC4合金基体表面喷涂由CoNiCrAlY过渡层和ZrO_2陶瓷面层组成的梯度热障涂层,并进行800℃静态高温氧化试验。采用SEM,XRD分析了涂层的组织、形貌及结构,并研究了涂层表面硬度的变化。结果表明:TC4合金经等离子喷涂处理后表面形成陶瓷热障涂层且与基体结合紧密,表面高温抗氧化能力提高。The gradated coating of the CoNiCrAlY under layers and the ZrO2 top layer was plasma sprayed onto the TC4 alloy surface. The phase microstructure and morphology of the coating were analyzed by X-ray diffraction （XRD） and scanning electron microscopy （SEM）. The high temperature oxidation resistance of the plasma sprayed samples at 800℃ was investigated. The plasma generated coating improved the high temperature oxidation resistance of the TC4 alloys by retarding their oxidation rate.

关 键 词：钛合金 等离子喷涂 CoNiCrAlY+ZrO2涂层 高温氧化 

分 类 号：TG174.45[金属学及工艺—金属表面处理]