| Project/Area Number |
23560863
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Material processing/treatments
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| Research Institution | University of Yamanashi |
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Principal Investigator |
SONOYA Keiji 山梨大学, 医学工学総合研究部, 教授 (80550805)
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| Co-Investigator(Kenkyū-buntansha) |
ISHIDA Kazuyoshi 山梨大学, 大学院医学工学総合研究部, 準教授 (70324176)
NAKAMURA Masanobu 山梨大学, 大学院医学工学総合研究部, 助手 (00155855)
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2011: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
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| Keywords | TBC / プラズマ溶射 / ガスタービン / 自己修復 / 熱サイクル特性 / 高温酸化 / 遮熱溶射 / 遮熱効果 / 酸化 / 断熱溶射皮膜 / MoSi2 / TGO / 高温酸化特性 |
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| Research Abstract |
The authors have developed the method of improving the thermal cyclic resistance for the thermal barrier coating system that is deposited on gas turbine components. Conventional thermal barrier coating consists of duplex system, top coating and bond coating. The developed system has a protective intermediate layer of MoSi2 for preventing oxidation of the bond coating, Conventional duplex plasma sprayed coating was delaminated after 20 thermal cycles. On the other hand, the developed triple layered coating system was not delaminated up to 60 cycles. The reason of the enhanced resistance to thermal cycles for the developed triple layered coating system is that the MoSi2 layer existing between the top coating and the bond coating has the self-repairing property. MoSi2 oxidizes to form SiO2 which seals the cracks and pores formed between the top coating and the bond coating.
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