Effect of laser-cracking method of ZrO2/Ni thermal barrier coating for regeneratively cooled thrust chamber evaluated by combustion gases of NTO/MMH propellant
航空宇宙技術研究所 角田宇宙推進技術研究センター
航空宇宙技術研究所 角田宇宙推進技術研究センター
航空宇宙技術研究所 角田宇宙推進技術研究センター
航空宇宙技術研究所 角田宇宙推進技術研究センター
航空宇宙技術研究所 角田宇宙推進技術研究センター
航空宇宙技術研究所 構造力学部
宇宙開発事業団
石川島播磨重工業
新日本製鐵
Wuhan University of Technology
著者所属（英）
National Aerospace Laboratory Kakuda Research Center
National Aerospace Laboratory Kakuda Research Center
National Aerospace Laboratory Kakuda Research Center
National Aerospace Laboratory Kakuda Research Center
National Aerospace Laboratory Kakuda Research Center
National Aerospace Laboratory Structural Mechanics Division
National Space Development Agency of Japan
Ishikawajima-Harima Heavy Industries Co Ltd
Nippon Steel Corporation
Wuhan University of Technology
An evaluation test of laser cracking specimens applied to ZrO2/Ni Functionally Graded Materials (FGM) and non-FGM is described. In this test, 30-mm disk specimens of these materials were exposed to the combustion gas of Nitrogen Tetraoxide (NTO) and Monomethyl Hydrazine (MMH) propellant. Delamination and vertical crack formation of the ZrO2 thermal barrier coating were observed during the heating test. It was found that the laser cracking method seemed to be effective at preventing delamination in the coating layer of the test specimens. The crack and the delamination formation mechanisms for ZrO2/Ni FGM test specimens are also discussed with a thermal stress analysis by using a finite element method.
再生冷却式燃焼器用ZrO2/Ni系遮熱コーティング材料のNTO/MMH燃焼ガス加熱場におけるレーザー改質効果
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