Thermal cycle behavior of plasma sprayed La2O3, Y2O3 stabilized ZrO2 coatings

Mineaki Matsumoto, Hiroshi Takayama, Daisaku Yokoe, Kazuo Mukai, Hideaki Matsubara, Yukio Kagiya, Yuuji Sugita

Research output: Contribution to journalArticlepeer-review

55 Citations (Scopus)

Abstract

The effects of La2O3 addition on thermal conductivity, phase stability and thermal cycle life of Y2O3 stabilized ZrO2 plasma sprayed coatings were investigated. Although low thermal conductivity as well as high resistance to sintering was achieved by La2O3 addition, it tended to also result in lower phase stability and thermal cycle life of the coatings. Optimization of the composition and structure of the coatings improved these properties, and the optimized coatings showed prolonged thermal cycle life.

Original languageEnglish
Pages (from-to)2035-2039
Number of pages5
JournalScripta Materialia
Volume54
Issue number12
DOIs
Publication statusPublished - 2006 Jun 1

Keywords

  • LaO
  • Phase stability
  • Sintering
  • Thermal barrier coating (TBC)
  • Thermal conductivity
  • Thermal cycle life

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

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