| GU Yi,XIA Chang-qing,QIU Guan-zhou.The Study on Interface Reaction between High-temperature Ceramic Coating Containing Nano-size Nickel Powder and Super Alloy GH202[J],39(1):9-11 |
| The Study on Interface Reaction between High-temperature Ceramic Coating Containing Nano-size Nickel Powder and Super Alloy GH202 |
| Received:October 13, 2009 Revised:February 10, 2010 |
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| DOI： |
| KeyWord:Nano-size nickel powders Ceramic coating Vacuum anneal Microstructure evolvement |
| Author | Institution |
| GU Yi |
Central South University, Changsha , China |
| XIA Chang-qing |
Central South University, Changsha , China |
| QIU Guan-zhou |
Central South University, Changsha , China |
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| Abstract: |
| The failure of coatingsis mainly caused by the behavior of microstructure oninterface of the coating and substrate.The behavior of microstructure on interface of high-temperature ceramic coating containing nano-size nickel powder and super alloy GH202 during vacuum diffusion was studied. The results show that Al2O3oxide layer and Ti, N compound exist respectively in the alloy substrate close to interface.During long time diffusion,nano-size nickel powders gradually congregate and grow up, and the confluent interface appeares, which shows that the nano-size nickel powders have the effect of restraining the coating from failure. |
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