| WU Gong-yi,ZHANG Zhan-ling,SUN Kai-wei,YU Hua,QIU Ran-feng,SHI Hong-xin,ZHANG Ke-ke.Coating Characters and Interface Behavior between TA2 and Zr / WC Coating Produced by Electro-spark Deposition[J],45(1):96-100 |
| Coating Characters and Interface Behavior between TA2 and Zr / WC Coating Produced by Electro-spark Deposition |
| Received:September 17, 2015 Revised:January 20, 2016 |
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| DOI：10.16490/j.cnki.issn.1001-3660.2016.01.015 |
| KeyWord:TA2 Zr WC ectro-spark deposition duplex coatings interface behaviors |
| Author | Institution |
| WU Gong-yi |
1. Material Science & Engineering College, Henan University of Science and Technology, Luoyang , China;2. Henan Province Collaborative Innovation Center for Nonferrous Metals, Luoyang , China |
| ZHANG Zhan-ling |
1. Material Science & Engineering College, Henan University of Science and Technology, Luoyang , China;2. Henan Province Collaborative Innovation Center for Nonferrous Metals, Luoyang , China |
| SUN Kai-wei |
1. Material Science & Engineering College, Henan University of Science and Technology, Luoyang , China;2. Henan Province Collaborative Innovation Center for Nonferrous Metals, Luoyang , China |
| YU Hua |
1. Material Science & Engineering College, Henan University of Science and Technology, Luoyang , China;2. Henan Province Collaborative Innovation Center for Nonferrous Metals, Luoyang , China |
| QIU Ran-feng |
1. Material Science & Engineering College, Henan University of Science and Technology, Luoyang , China;2. Henan Province Collaborative Innovation Center for Nonferrous Metals, Luoyang , China |
| SHI Hong-xin |
1. Material Science & Engineering College, Henan University of Science and Technology, Luoyang , China;2. Henan Province Collaborative Innovation Center for Nonferrous Metals, Luoyang , China |
| ZHANG Ke-ke |
1. Material Science & Engineering College, Henan University of Science and Technology, Luoyang , China;2. Henan Province Collaborative Innovation Center for Nonferrous Metals, Luoyang , China |
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| Abstract: |
| Objective To study the Zr/ WC coating character and behavior on the surface of TA2 by electro-spark deposition. Methods The microstructure, the chemical composition distribution, the residual stress, the micro-hardness distribution and the relative wear resistance were received by canning electron micro-scopy (SEM), energy dispersion spectrum (EDX), X-ray stress analyser, hardness meter and wear tester. Results The deposited layer was continuous and uniform. The thickness was about 50 μm to 80 μm, the coating surface was not flat, there were a lot of small pits and adhesion. The coating section had a small amount of porosity and crack. Mutual diffusion of main elements happened between coating surface and substrate. The obtained coating was a composite coating by metallurgical reaction between Ti, Zr, and WC. Residual stresses existed in the coating and the residual stress of the property can be controlled by changing the technological parameters. The micro-hardness of the coating surface was about 4 times as that of the substrate, the wear quality of Zr / WC composite coating was much less than that of TA2, εw = 4. 1, the relative wear resistance of the deposited layer was increased by 3. 1 times, the wear resistance improved significantly. Conclusion The performance of the substrate can be improved by TA2 and Zr / WC coating. |
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