Corrosion behavior of AlPO4 as environmental barrier coating in water vapor enviroment

Xian Hong Chen, Lai Fei Cheng, Yi Guang Wang*, Li Tong Zhang, Zhi Liang Hong, Ya Hui Wu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

AlPO4 was synthesized by a Sol-Gel method. Its coefficient of thermal expansion (CTE) was measured by dilatometer. Its corrosion behavior was tested in an environment of 50vol%H2O/50vol%O2 with a flow rate of 0.085 cm/s at 1350°C. The phases and composition of the samples were analyzed by X-ray diffraction and Energy Dispersive Spectroscope. The microstructures of AlPO4 were characterized by Scanning Electron Microscope. The results indicate that the CTE of AlPO4 matches with that of C/SiC composites and its corrosion resistance is much better than that of SiC. However, the decomposition of AlPO4 at high temperatures is the main problem in the water vapor enviroment, which will be accelerated in combination with silica.

Original languageEnglish
Pages (from-to)397-401
Number of pages5
JournalWuji Cailiao Xuebao/Journal of Inorganic Materials
Volume24
Issue number2
DOIs
Publication statusPublished - Mar 2009
Externally publishedYes

Keywords

  • AlPO
  • Compatibility
  • Environmental barrier coating
  • Water vapor corrosion

Fingerprint

Dive into the research topics of 'Corrosion behavior of AlPO4 as environmental barrier coating in water vapor enviroment'. Together they form a unique fingerprint.

Cite this