| HUANG Lin-bin,YU Sheng-fu,DENG Yu,DAI Ming-hui,XU Hui-zi.Study on Pretreatment Process and Microstructure and Properties of 4Cr13 Arc Spraying Coatings[J],39(6):26-28,70 |
| Study on Pretreatment Process and Microstructure and Properties of 4Cr13 Arc Spraying Coatings |
| Received:July 26, 2010 Revised:December 10, 2010 |
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| DOI： |
| KeyWord:arc spraying pretreatment process 4Cr13 coatings microstructure bonding strength |
| Author | Institution |
| HUANG Lin-bin |
College of Materials Science and Engineering,Huazhong University of Science and Technology, Wuhan , China |
| YU Sheng-fu |
College of Materials Science and Engineering,Huazhong University of Science and Technology, Wuhan , China |
| DENG Yu |
College of Materials Science and Engineering,Huazhong University of Science and Technology, Wuhan , China |
| DAI Ming-hui |
College of Materials Science and Engineering,Huazhong University of Science and Technology, Wuhan , China |
| XU Hui-zi |
College of Materials Science and Engineering,Huazhong University of Science and Technology, Wuhan , China |
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| Abstract: |
| 4Cr13 arc spraying coatings were prepared on QSTE420TM steel which was preprocessed by three surface pretreatment processes, such as sandblasting, sandblasting and spraying base coating, sandblasting and electrospark roughening. Microstructure and fracture morphology of coatings were investigated, microhardness and bonding strength were also tested. And the effects of the three pretreatment processes on microstructure and properties were compared. The results show that 4Cr13 coatings display the typical layer structure. Different surface pretreatment processes have significant effect on bonding strength of the coatings. Spraying base coating after sandblasting can make 4Cr13 coatings have the best comprehensive performance. |
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