Columnar and DVC-structured thermal barrier coatings deposited by suspension plasma spray: high-temperature stability and their corrosion resistance to the molten salt

Xiaolong Chen, Takuma Ohnuki, Seiji Kuroda*, Maciej Gizynski, Hiroshi Araki, Hideyuki Murakami, Makoto Watanabe, Yoshio Sakka

*この研究の対応する著者

研究成果: Article査読

18 被引用数 (Scopus)

抄録

High-temperature stability of SPS YSZ coatings with the columnar and deep vertically cracked (DVC) structures and their corrosion resistance to 56 wt% V2O5+44 wt% Na2SO4 molten salt mixture were investigated. Both the columnar and DVC-structured YSZ coatings were sintered at 1000 °C, but a significant increase in porosity in combination with significant reductions in Vickers’ hardness and Young's modulus were observed at the temperatures from 1200 °C to 1400 °C. The DVC-structured YSZ coating exhibited superior corrosion resistance against the molten salt mixture attack to the columnar-structured one due to its higher density behaving as a sealing protective top layer at 950 °C.

本文言語English
ページ(範囲)16822-16832
ページ数11
ジャーナルCeramics International
42
15
DOI
出版ステータスPublished - 2016 11月 15
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • セラミックおよび複合材料
  • プロセス化学およびプロセス工学
  • 表面、皮膜および薄膜
  • 材料化学

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