| WU Yong-fa,WANG Liu-ying,HUA Shao-chun,LIU Gu,ZHAO Rui-xing.Research on the Properties of Thermal Sprayed NiCr/Nanostructured ( ZrO2 +8 %Y203) Gradated Coating[J],37(4):18-20,34 |
| Research on the Properties of Thermal Sprayed NiCr/Nanostructured ( ZrO2 +8 %Y203) Gradated Coating |
| Received:April 07, 2008 Revised:August 10, 2008 |
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| DOI： |
| KeyWord:NiCr alloy Nanostructured ( ZrO2 +8% Y203) ceramic, Gradated coating Mechanical properties |
| Author | Institution |
| WU Yong-fa |
5th Dep. , Second Artillery Engineering University, Xian , China |
| WANG Liu-ying |
5th Dep. , Second Artillery Engineering University, Xian , China |
| HUA Shao-chun |
5th Dep. , Second Artillery Engineering University, Xian , China |
| LIU Gu |
5th Dep. , Second Artillery Engineering University, Xian , China |
| ZHAO Rui-xing |
5th Dep. , Second Artillery Engineering University, Xian , China |
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| Abstract: |
| The high temperature oxidation and wear resistance gradated coating for improving the bonding strength between the ceramic coating and the substrate was designed. The properties of the gradated coating with the surface layer of nanostructured ( ZrO2 +8% Y203 ) and the middle layer of NiCr prepared by thermal spray on the 45 steel, were studied by scanning electronic microscope( SEM) , X-ray diffraction, bonding strength and microhardness measurements. The results show that NiCr/nanostructured ( ZrO2 +8%Y203) gradated coating microstructure is very dense and its mechanical properties are better than that of NiCr alloy coating or nanostructured ZrO2 ceramic coating, the high temperature and wear resistance of the gradated coating can be improved by the surface layer and the high temperature oxidation resistance can be enhanced by the middle layer. |
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