2013 Fiscal Year Final Research Report
Development of Thermal Barrier Coating System with an intermediate layer containing MoSi2 with Superior Thermal Cyclic Properties
| Project/Area Number |
23560863
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Multi-year Fund |
|---|
| Section | 一般 |
|---|
| Research Field |
Material processing/treatments
|
|---|
| Research Institution | University of Yamanashi |
|---|
Principal Investigator |
SONOYA Keiji 山梨大学, 医学工学総合研究部, 教授 (80550805)
|
|---|
| 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)
|
|---|
| Project Period (FY) |
2011 – 2013
|
| 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 |
|---|
| 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.
|
Research Products
(4 results)
