| JIA Wei-ping,WU Meng-hua,YANG Fan.Effect of Combined Electro-deposition Parameters on Surface Performances of Nickel Micro Electroforming Parts[J],43(5):55-60 |
| Effect of Combined Electro-deposition Parameters on Surface Performances of Nickel Micro Electroforming Parts |
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| DOI： |
| KeyWord:multi-field composite action electro-deposition process parameters nickel-crystal micro-electroforming part surface properties |
| Author | Institution |
| JIA Wei-ping |
Key Laboratory for Non-traditional & Functional Materials Preparation of Education Department of Liaoning Province, Dalian University, Dalian , China |
| WU Meng-hua |
Key Laboratory for Non-traditional & Functional Materials Preparation of Education Department of Liaoning Province, Dalian University, Dalian , China |
| YANG Fan |
Key Laboratory for Non-traditional & Functional Materials Preparation of Education Department of Liaoning Province, Dalian University, Dalian , China |
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| Abstract: |
| Objective In order to improve the surface properties of electro-deposited nickel micro-electroforming parts, ultrasonic and magnetic fields were introduced into the micro electroforming process. Methods Current intensity, pulse duty cycle, ultrasonic power, direction and intensity of magnetic field strength were altered during the electro-deposition of nickel micro-electroforming parts, and the effects of the above parameters on the performance of the surface morphology and microhardness of the microelectroforming parts were analyzed. Results The micro-hardness of the micro-casting part increased significantly along with the increase of the magnetic field intensity, while first increased and then decreased along with the increasing current intensity, pulse duty cycle and ultrasonic power, among which the pulse duty cycle had weaker effect on the micro-hardness as compared to the other parameters. The optimized parameters were: vertical magnetic field intensity 0. 8 T, cathode current density 2 A /dm2, ultrasonic power 240 W, and pulse duty cycle 20% . Conclusion Electrodeposition environment could be optimized after introducing ultrasound and magnetic fields so as to refine the grain size, improve the electroformed layer morphology and enhance the microhardness of the microcasting parts. |
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