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NiCrAlY(YSZ)多层复合涂层高温抗氧化行为研究
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西北有色金属研究院腐蚀与防护研究所

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中图分类号:

TG174.44

基金项目:

国家青年自然(51501155)


The cyclic oxidation resistance behavior of mult-NiCrAlY(YSZ) coatings
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Affiliation:

Department of Corrosion and Protection, Northwest Institute For Non-ferrous Metal Reasearch

Fund Project:

The National Natural Science Foundation of China (51501155)

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    摘要:

    采用EB-PVD技术在镍基合金Rene N5基体表面沉积YSZ/NiCrAlY/( NiCrAlY+YSZ) /NiCrAlY/( NiCrAlY+YSZ)多层复合涂层,并对试样进行1000℃不同时间的循环氧化处理,通过SEM、EDS、XRD等方法,分析了复合涂层微观组织结构的演变规律及界面反应机制。结果表明:在1000℃条件下,YSZ先驱层会形成双层“三明治”结构的活性扩散障,阻挡基体与涂层之间的元素互扩散;同时,最外层的NiCrAlY+YSZ复合层逐渐转变为以NiO为主混合氧化物层。

    Abstract:

    In this article, the N5/YSZ/NiCrAlY/( NiCrAlY+YSZ) /NiCrAlY/( NiCrAlY+YSZ) coatings were prepared on Ni-based single crystal alloy (Rene N5) by electron beam physical vapor deposition (EB-PVD). And the sampes were exposed to isothermal oxidation at 1000℃ for 200h and 500h. The microstructural evolution behavior and the mechanism of interface reaction was investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD) and energy dispersive spectroscopy (EDS). The results suggest that the YSZ layer can form an α-Al2O3 active diffusion barrier layer with a “sandwich” structure to refuse the interdiffusion between substrate and mult-NY coating. And the mult-NY coating was transformed to mixed oxide layers gradually during the prcess of cyclic oxidation.

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刘林涛,李争显,王彦峰,王毅飞. NiCrAlY(YSZ)多层复合涂层高温抗氧化行为研究[J].稀有金属材料与工程,2019,48(11):3657~3663.[Liu Lintao, Li Zhengxian, Wang Yanfeng, Wang Yifei. The cyclic oxidation resistance behavior of mult-NiCrAlY(YSZ) coatings[J]. Rare Metal Materials and Engineering,2019,48(11):3657~3663.]
DOI:10.12442/j. issn.1002-185X.20180527

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历史
  • 收稿日期:2018-05-22
  • 最后修改日期:2018-06-27
  • 录用日期:2018-06-27
  • 在线发布日期: 2019-12-10
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