单晶高温合金NiCoCrAlYTa涂层高温氧化行为研究  

Oxidation Behavior of NiCoCrAlYTa Coating in High Temperature Oxidation

作　　者：李佩 云海涛 姜嫄嫄 刘建明 Pei Li;Haitao Yun;Yuanyuan Jiang;Jianming Liu(Aecc South Industry Co.,Ltd.,Zhuzhou 412002;BGRIMM Technology Group,Beijing 100160)

机构地区：[1]中国航发南方工业有限公司,株洲412002 [2]矿冶科技集团有限公司,北京100160

出　　处：《热喷涂技术》2020年第2期36-40,16,共6页Thermal Spray Technology

基　　金：国家科技重大专项(2017-VII-0012-0109)。

摘　　要：飞机发动机及燃气轮机的发展要求更高的燃气进口温度,从而获得更高的推重比或功率输出,抗氧化MCrAlY涂层在其中发挥至关重要的作用。本文采用含有Ta元素的Amdry997粉末进行超音速火焰喷涂,研究涂层的高温氧化行为,并重点关注Al和Ta元素在涂层内不同相中的分布,及其对涂层与基体元素互扩散行为的影响。研究表明,Ta元素对提高γ'-Ni3(Al,Ta)相稳定性起到重要作用。The development of air engines and gas turbines requires higher combustion and turbine temperatures for higher propulsion force or power generation.More durable and oxidation resistant MCrAlY coatings are then needed.In this study,Amdry997 powders containing Ta was used for HVOF spray.The high-temperature oxidation behavior of the coatings was studied by focusing on how Al and Ta elements were distributed in different phases of the coating and their influence on the interdiffusion behavior of elements between the coating and substrate.The results showed that the addition of Ta in the coatings increased the stability ofγ'-Ni3(Al,Ta)phase.

关 键 词：MCRALY 高温氧化 互扩散 

分 类 号：TG174.4[金属学及工艺—金属表面处理]