留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码
数据统计

分享

计量
  • 文章访问数:  199
  • HTML全文浏览量:  95
  • PDF下载量:  21
  • 被引次数: 0
Yao Yao, Di Wu, Xiaofeng Zhao, and Fan Yang, Premature failure induced by non-equilibrium grain-boundary tantalum segregation in air-plasma sprayed ZrO2-YO1.5-TaO2.5 thermal barrier coatings, Int. J. Miner. Metall. Mater.,(2021). https://doi.org/10.1007/s12613-021-2394-z
Cite this article as:
Yao Yao, Di Wu, Xiaofeng Zhao, and Fan Yang, Premature failure induced by non-equilibrium grain-boundary tantalum segregation in air-plasma sprayed ZrO2-YO1.5-TaO2.5 thermal barrier coatings, Int. J. Miner. Metall. Mater.,(2021). https://doi.org/10.1007/s12613-021-2394-z
引用本文 PDF XML SpringerLink
  • Research Article

    Premature failure induced by non-equilibrium grain-boundary tantalum segregation in air-plasma sprayed ZrO2-YO1.5-TaO2.5 thermal barrier coatings

    + Author Affiliations
    • ZrO2-YO1.5-TaO2.5 (ZYTO) is a promising top coat material for thermal barrier coatings (TBCs). The bulk properties of ZYTO have been reported by several studies, but its performances as TBCs are less-well understood. Here we prepare ZYTO TBCs by air plasma spraying (APS) and investigate their thermal cycling performances at 1150 ºC. Despite of the good bulk properties, APS ZYTO TBCs present an extremely short thermal fatigue life. This is attributed to the non-equilibrium grain-boundary segregation of TaO2.5 induced by limited solubility and rapid quenching during APS process, resulting in a tetragonal (t) to cubic (c) and metastable-tetragonal (tm) phase transformation in ZYTO TBCs. The volume shrinkage (~0.74%) associated with the phase transformation generates many cracks at the c/tm phase boundaries after deposition. On the other hand, formation of cubic phase with massive grain-boundary Ta segregation induces a large intergranular embrittlement and a weak bonding strength (~5.3 MPa), resulting in the premature failure of the ZYTO TBCs.

    • loading

    Catalog

      通讯作者: 陈斌, bchen63@163.com
      • 1. 

        沈阳化工大学材料科学与工程学院 沈阳 110142

      1. 本站搜索
      2. 百度学术搜索
      3. 万方数据库搜索
      4. CNKI搜索

    • /

      返回文章
      返回