Correction Method of Young's Modulus Measurement for Top Coat of Thermal Barrier Coatings by Instrumented Indentation Test with Spherical Indenter

• OHKI Motofumi

  Department of Materials Science and Technology, Faculty of Engineering, Niigata University

• ISHIBASHI Tatsuya

  Graduate School of Natural Science and Technology, Niigata University

抄録

Understanding of Young’s modulus of Thermal Barrier Coatings (TBCs) top coat is one of the important factors about improvement reliability of TBCs that is key technology of increasing thermal efficiency of gas turbine. Some measurement procedures have been proposed, but not established yet. Indentation test evaluated only hardness value before, but recently it has developed to be able to evaluate other mechanical properties such as yield strength, Young’s modulus, etc. From such background, application of indentation test for measurement of Young’s modulus of TBCs top coat is effective means. Although pyramidal indenter and calculation method regulated by ISO14577 is usually selected for measurement of Young’s modulus of TBCs top coat, author have proposed spherical indenter and calculation method based on elastic contact theory by Hertz. In this study, influence of different correcting specimens on measurement Young's modulus of TBCs top coat was discussed and it was concluded that the results of HMV500 hardness standard specimen show high uniformity on measured Young’s modulus of TBCs top coat (i.e. less load dependency).

収録刊行物

• JSMME

  JSMME 4 (2), 286-293, 2010

  一般社団法人 日本機械学会

キーワード

• Correction Method
• Thermal Barrier Coatings
• Young's Modulus
• Instrumented Indentation Test
• Elastic Contact Theory

詳細情報

• CRID: 1390282680241176576
• NII論文ID: 130000255503
• DOI: 10.1299/jmmp.4.286
• ISSN: 18809871
• Web Site: http://www.jstage.jst.go.jp/article/jmmp/4/2/4_2_286/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可