等离子喷涂-物理气相沉积制备纳米复合结构环境障涂层及其热循环性能（英文）  

Nano-composite Structured Environmental Barrier Coatings Prepared by Plasma Spray-Physical Vapor Deposition and Their Thermal Cycle Performance

作　　者：王超 张小锋[1] 周克崧 刘敏 邓畅光[1] 邓春明 牛少鹏 许世鸣 陈志坤 曾威 Wang Chao;Zhang Xiaofeng;Zhou Kesong;Liu Min;Deng Changguang;Deng Chunming;Niu Shaopeng;Xu Shiming;Chen Zhikun;Zeng Wei(The Key Laboratory of Guangdong for Modern Surface Engineering Technology,National Engineering Laboratory for Modern Materials Surface Engineering Technology,Guangdong Institute of New Materials,Guangzhou 510650,China;South China University of Technology,Guangzhou 510640,China)

机构地区：[1]广东省新材料研究所现代材料表面工程技术国家工程实验室广东省现代表面工程技术重点实验室,广东广州510650 [2]华南理工大学,广东广州510640

出　　处：《稀有金属材料与工程》2019年第11期3455-3462,共8页Rare Metal Materials and Engineering

基　　金：National Key R&D Program of China(2017YFB0306100);Guangdong Academy of Sciences Program(4052018XMZC0001020364,2017GDASCX-0843,2017GDASCX-0202);Guangdong Technical Research Program(2014B070706026);Guangzhou Technical Research Program(201605131008557,201707010385,201510010095);Guangdong Natural Science Foundation(2016A030312015,2017A030310315)

摘　　要：在SiC/SiC陶瓷基复合材料(CMC)上制备了具有3层结构(Si/Mullite/Yb2SiO5)的环境障涂层(EBCs)。提出了一种新的等离子喷涂-物理气相沉积(PS-PVD)方法制备EBCs以减少SiC/SiC CMC在水氧腐蚀下的降解。在制备EBCs之前,用喷雾干燥塔制备了团聚的Yb2SiO5粉末。然后通过PS-PVD技术制备了致密的EBCs,得到了具有层状和柱状复合结构的Yb2SiO5涂层,并给出了这种特殊结构的沉积示意图。此外,测试了PS-PVD制备的EBCs在1300℃到室温水中的热循环性能。在30次热循环实验后未出现明显的散裂现象,表明EBCs具有良好的抗热震性能。Environmental barrier coatings(EBCs)consisting of a tri-layer structure(Si/mullite/Yb2SiO5)were prepared on SiC/Si C ceramic matrix composite(CMC).For decreasing the degradation of water-oxygen corrosion of Si C/SiC CMC,a novel EBCs fabrication method of plasma spray-physical vapor deposition(PS-PVD)was proposed in this work.Prior to EBCs preparation,agglomerated Yb2SiO5 powders was fabricated by spray dryer.After that,dense EBCs were fabricated by PS-PVD technique,where the Yb2SiO5 coating with laminar and columnar composited structure was achieved.And the deposition diagram of this special structure was presented.Besides,the thermal cycle performance of PS-PVD EBCs was tested from 1300℃ to room temperature in water.Results show that no apparent spallation appears after 30 cycles,indicating that the EBCs have a good thermal shock performance.

关 键 词：环境障涂层 等离子喷涂-物理气相沉积 热循环 Yb2SiO5 

分 类 号：TG1[金属学及工艺—金属学]