☆ 4.7 Article

Local accumulation of thermally grown oxide in plasma-sprayed thermal barrier coatings with rough top-coat/bond-coat interfaces

SCRIPTA MATERIALIA (2005)

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Journal

SCRIPTA MATERIALIA
Volume 52, Issue 9, Pages 905-909

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2004.12.032

Keywords

thermal barrier coatings; plasma spraying; oxidation; thermally grown oxide

Categories

Nanoscience & Nanotechnology Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering

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After thermal cycle exposure, multilayered accumulation of thermally grown oxide (TGO) was observed locally on the tops of the roughness protrusions of the bond coat in thermal barrier coatings. This phenomenon is attributed to the repeated separation and growth of the TGO. The TGO accumulation caused cracking in the top coat. (C) 2005 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

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