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

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概要

• 論文の詳細を見る

• 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).

• 一般社団法人 日本機械学会の論文

著者

• Ohki Motofumi

  Department Of Materials Science And Technology Faculty Of Engineering Niigata University

• ISHIBASHI Tatsuya

  Graduate School of Natural Science and Technology, Niigata University

関連論文

• Collaborative Research on Adhesion Strength of Thermal Barrier Coatings in JSMS
• Influence of Load Dependency and Coating Anisotropy on Calculated Young's Modulus of TBCs by Indentation Test
• Influence of Load Dependency and Coating Anisotropy on Calculated Young's Modulus of TBCs by Indentation Test
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• Practical Nanoindentation Theory and Experiments of the Pyramidal Indenter(7th)AFM profiles of Microvickers indenter tip and elastic indentation equations between the hyperboloid of revolution indenter and plane specimen
• Proposal for ISO 14577 : Metallic materials : Instrumented Indentation Test for Hardness and Materials Parameters (Part 1) Test Method (3rd. Influence on Computed Young's Modulus by Different Indenter's Tip Profile and Material Property (小特集 微小部および微小部材の評価
• Correction Method of Young's Modulus Measurement for Top Coat of Thermal Barrier Coatings by Instrumented Indentation Test with Spherical Indenter

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