Measurements of stress distribution in top coat and TGO layers processed by EB-PVD

Toru Tomimatsu, Shijie Zhu, Yutaka Kagawa

Research output: Contribution to journalConference article

2 Citations (Scopus)

Abstract

Measurements of stress distributions in top coat and TGO layers of EB-PVD TBC have been carried out. It is found that the stress in the top coat layer in as deposited state is ∼3.5 GPa and it reduces to ∼1 GPa after isothermal heat exposure in air. The stress in the TGO layer is an order of ∼1 GPa. The stress in the top coat layer decreases with the increase of heat exposure time and that in the TGO layer vice versa. This change originates from the release of residual stress during deposition process and change in force-balance, which originates from the growth of TGO layer.

Original languageEnglish
Pages (from-to)391-396
Number of pages6
JournalCeramic Engineering and Science Proceedings
Volume23
Issue number4
Publication statusPublished - 2002 Jan 1
Event26th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B - Cocoa Beach, FL, United States
Duration: 2002 Jan 132002 Jan 18

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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