Evaluation of Coating Properties of Thermal Barrier Coatings by Leeb Hardness Testing
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- OMARU Junya
- Department of Mechanical Engineering, Faculty of Engineering, Tokyo University of Science
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- ARAI Masayuki
- Department of Mechanical Engineering, Faculty of Engineering, Tokyo University of Science
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- TEZUKA Hideshi
- TEPCO Research Institute
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- MURABA Yoshinori
- TEPCO Research Institute
Bibliographic Information
- Other Title
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- リーブ硬さ試験による遮熱コーティングの皮膜特性評価
Abstract
<p>In order to explore the possibility of evaluating mechanical and thermal properties of thermal barrier coatings (TBCs) by Leeb hardness (HL) test, relationship between mechanical properties and HL value was examined on TBC plate-shaped specimen which was exposed to a high temperature atmosphere. A finite element (FE) analysis of the sphere impact process was firstly performed on a double-layered plate model in order to discuss the experimental relations. Obtained results can be summarized as follows: (1) Results of high temperature exposure tests showed a clear correlation between HL value and Young’s modulus and also thermal conductivity. (2) The FE analysis obtained here supported the relationship between the mechanical properties in TC layers and HL value. Consequently, it was confirmed that Leeb hardness test had capability of non-destructive testing method for assessing the Young’s modulus and thermal conductivity of top coat layer in TBCs.</p>
Journal
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- Journal of the Society of Materials Science, Japan
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Journal of the Society of Materials Science, Japan 73 (4), 335-342, 2024-04-15
The Society of Materials Science, Japan
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Details 詳細情報について
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- CRID
- 1390299903955092224
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- ISSN
- 18807488
- 05145163
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
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- Abstract License Flag
- Disallowed