Corrosion behavior of volcanic ash and calcium magnesium aluminosilicate on Yb2SiO5 environmental barrier coatings

Byung Koog Jang, Fan Jie Feng, Keiko Suzuta, Hidehiko Tanaka, Yoshitaka Matsushita, Kee Sung Lee, Shunkichi Ueno

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

High-temperature corrosion behavior of volcanic ash and artificial calcium-magnesium-aluminosilicate (CMAS) on sintered ytterbium monosilicate (Yb2SiO5), and the corrosion resistance of Yb2SiO5 as an environmental barrier coating, are investigated. Dense sintered Yb2SiO5 specimens were prepared using the spark plasma sintering method at 1400°C for 10 min. These specimens were subjected to a hot corrosive environment of molten Iceland volcanic ash and CMAS at 1400°C for 2, 12, and 48 h. Different corrosion phenomena, i.e., continuous reaction with CMAS and weak reaction with the volcanic ash, were observed. From the results of in-situ high temperature X-ray diffraction measurement and scanning electron microscope-energy dispersive X-ray spectrometry studies, Yb2SiO5 exhibits excellent resistance to volcanic ash but lacks resistance to CMAS attack.

Original languageEnglish
Pages (from-to)326-332
Number of pages7
JournalJournal of the Ceramic Society of Japan
Volume125
Issue number4
DOIs
Publication statusPublished - Apr 2017
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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