Segmented thermal barrier coatings produced by atmospheric plasma spraying hollow powders

H. B. Guo, S. Kuroda, H. Murakami

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

Segmented thermal barrier coatings were produced by plasma spraying hollow and solid ZrO2-8 wt.% Y2O3 powders. The solid powder (SP) had greater capability of producing segmentation cracks in coating compared with the hollow powder (HP). High substrate temperature (T s) gave rise to an increased segmentation crack density (D s). The segmentation crack network was still stable even after sintering at 1300 °C for 15 h. The microcracks that are mainly attributed to delaminations between splats had a negative effect on the origin and propagation of segmentation cracks.

Original languageEnglish
Pages (from-to)136-139
Number of pages4
JournalThin Solid Films
Volume506-507
DOIs
Publication statusPublished - 2006 May 26

Keywords

  • Plasma spraying
  • Segmentation cracks
  • Thermal barrier coatings

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

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