| WANG Xin-heng,QIAN Shu-kun,LIU An-min,ZHU Hang-sheng.Interface Microstructure and High Temperature Corrosion of Nano-Al2O3 Particle Reinforced Ni-based Alloy Powder Laser Cladding[J],42(6):23-26,47 |
| Interface Microstructure and High Temperature Corrosion of Nano-Al2O3 Particle Reinforced Ni-based Alloy Powder Laser Cladding |
| Received:July 08, 2013 Revised:August 18, 2013 |
| View Full Text View/Add Comment Download reader |
| DOI： |
| KeyWord:laser cladding nano-Al2O3 particle NiCoCrAlY alloy powder interface microstructure interface crack high temperature corrosion |
| Author | Institution |
| WANG Xin-heng |
Hunan Science and Technology Economy Trade Vocation College, Hengyang , China |
| QIAN Shu-kun |
Hunan Science and Technology Economy Trade Vocation College, Hengyang , China |
| LIU An-min |
Advanced Manufacturing Technology Research Institute, Hunan Institute of Technology, Hengyang , China |
| ZHU Hang-sheng |
Products Division of Hengyang Fengshun Automobile Axle Co. , Ltd, Hengyang , China |
|
| Hits: |
| Download times: |
| Abstract: |
| Objective In order to study the effects of nanoparticles on the hot corrosion resistance of Ni-based alloys cladding. Methods Nano-Al2O3 particles reinforced NiCoCrAlY alloy cladding was prepared using the tabletting preset laser cladding process. The microstructure and interface cracks of cladding layer were analyzed, and high temperature corrosion was performed in the 1000 益 molten salt . Results The results showed that the laser cladding interface region prepared with addition of Al2O3 particles did not show obvious flaws, compared to the layer prepared without addition of nanoparticles, its hot corrosion weight loss rate was much lower, its corrosion surface did not show serious uplift and flake, and its corrosion depth was low. Conclusion Addition of appropriate amount of nano-Al2O3 particles had an inhibitory effect on the formation of cracks in the NiCoCrAlY alloy laser cladding interface region. And the high temperature corrosion resistance of the laser cladding layer was significantly improved. |
| Close |
|
|
|