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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热循环性能研究
作者单位:

1.华南理工大学;2.广东省新材料研究所

基金项目:

国家重点研发计划(2017YFB0306100),广东省科学院项目(2018GDASCX-0402,2017GDASCX-0202,2017GDASCX-0111),广东省科技项目(2017090916002,2017A070701027),广东省自然科学基金(2016A030312015,2017A030310315),广州市科技项目(No.201605131008557,201707010385).


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

South China University of Technology

Fund Project:

National Key Research Program (2017YFB0306100), Guangdong Academy of Sciences Program (No. 2018GDASCX-0402, 2017GDASCX-0202, 2017GDASCX-0111), Guangdong Technical Research Program (No. 2017B090916002, 2017A070701027), Guangdong Natural Science Foundation (No. 2016A030312015, 2017A030310315), and Guangzhou Technical Research Program (No. 201605131008557, 201707010385).

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    摘要:

    在SiC/SiC陶瓷基复合材料(CMC)上制备了具有三层结构(Si/Mulltite/Yb2SiO5)的环境障涂(EBCs)。提出了一种新的等离子喷涂-物理气相沉积(PS-PVD)制备EBCs的方法来减少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,还测试了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。

    Abstract:

    Environmental barrier coatings (EBCs) consisting of a tri-layer structure (Si/Mulltite/ Yb<sub>2</sub>SiO<sub>5</sub>) were prepared on SiC/SiC ceramic matrix composite (CMC). For decreasing degradation of water-oxygen corrosion for SiC/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 Yb<sub>2</sub>SiO<sub>5</sub> powders were fabricated by spray dryer. After that dense EBCs were fabricated by PS-PVD technique, where the Yb<sub>2</sub>SiO<sub>5</sub> 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 water. No apparent spallation appeared after 30 cycles, which showed the EBCs had a good thermal shock performance.

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引用本文

王超,张小锋,周克崧,刘敏,邓畅光,邓春明,牛少鹏,许世鸣,陈志坤,曾威.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热循环性能研究[J].稀有金属材料与工程,2019,48(11):3455~3462.[Wang Chao, Zhang Xiaofeng, Zhou Kesong, Liu Min, Deng Changguang, Deng Chunming, Niu Shaopeng, Xu Shiming, Chen Zhikun, Zeng Wei. Nano-composite Structured Environmental Barrier Coatings Prepared by Plasma Spray-Physical Vapor Deposition and Its Thermal Cycle Performance[J]. Rare Metal Materials and Engineering,2019,48(11):3455~3462.]
DOI:10.12442/j. issn.1002-185X.20180768

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  • 收稿日期:2018-07-17
  • 最后修改日期:2019-10-18
  • 录用日期:2018-10-08
  • 在线发布日期: 2019-12-10