首页|热障涂层与单晶高温合金互扩散控制方法研究进展

热障涂层与单晶高温合金互扩散控制方法研究进展

扫码查看
原文链接
  • 万方数据
  • 维普
目前,二代及更高级单晶涡轮叶片的表面服役温度已达到1050℃以上,因此涂层与基体间的元素互扩散十分严重.互扩散不仅会消耗涂层中的有益元素,降低涂层服役寿命,而且会在单晶基体中形成二次反应区,严重损害单晶基体的力学性能.扩散障和低互扩散性涂层是控制热障涂层与单晶基体间元素互扩散的有效方法.结合国内外最新研究进展,本文首先对扩散障的设计原理、基本特性以及分类作简要介绍,并具体分析了金属扩散障、陶瓷扩散障和活性扩散障存在的主要问题以及针对这些问题开展的相关研究工作;其次,对低互扩散性涂层在热障涂层领域中的应用与最新发展动态进行综述,详细讨论了纳米晶涂层、相平衡涂层和γ'基涂层的高温防护性能和阻扩散机制.在此基础上,指出了扩散障和低互扩散性涂层的未来发展方向.
Research progress in methods for inhibiting interdiffusion between single crystal superalloys and thermal barrier coatings
Currently,the surface working temperature of second-generation or more advanced single crystal superalloy blade is above 1050 ℃,resulting in serious interdiffusion between coating and substrate.The interdiffusion not only consumes the beneficial elements of the coating and then reduces its service life,but also leads to the formation of secondary reaction zone in the substrate,which will seriously damage the high-temperature mechanical performance of the single crystal superalloy.Preparing diffusion barriers and designing the low inter-diffusivity coatings are effective ways to control the interdiffusion between thermal barrier coatings and single crystal superalloy substrates.Firstly,based on the latest international and domestic research progresses,the design principles,characteristics and classification of diffusion barriers were introduced briefly,and then the main problems and related research studies of metal diffusion barriers,ceramic diffusion barriers and active diffusion barriers were analyzed.Secondly,the application and latest progress of low inter-diffusivity coatings were reviewed,and the high-temperature protection properties and anti-diffusion mechanisms of nanocrystalline coatings,equilibrium coatings and γ'-based coatings were discussed in detail.Finally,the future development directions of different diffusion barriers and low inter-diffusivity coatings were pointed out.

single crystal superalloythermal barrier coatinginterdiffusionsecondary reaction zonediffusion barrier

李崎顺、姚红蕊、王娜、鲍泽斌、朱圣龙、王福会

展开 >

沈阳化工大学辽宁省特种功能材料合成与制备重点实验室,沈阳 110142

中国科学院金属所师昌绪先进材料研究中心,沈阳 110016

东北大学沈阳材料科学国家实验室,沈阳 110819

单晶高温合金 热障涂层 互扩散 二次反应区 扩散障

辽宁省教育厅2021年度科学研究经费项目-面上项目辽宁省博士科研启动基金计划项目2021年辽宁省"揭榜挂帅"科技攻关项目辽宁省"兴辽英才计划"项目资助中国-西班牙材料联合实验室

LJKZ04512021-BS-1882021JH1/10400091XLYC20050022022JH2/10700005

2024

10.11868/j.issn.1001-4381.2022.001012

材料工程
中国航发北京航空材料研究院

材料工程

CSTPCD北大核心
影响因子：0.78
ISSN：1001-4381
年,卷(期)：2024.52(9)