| 摘要: |
| 进行了脉冲和连续Nd3+:YAG激光电刷镀Ni试验，利用SEM进行了镀层表面和横断面形貌观察，采用X射线衍射仪分析了镀层的相结构，对镀层横断面进行了EDX能谱线扫描，测试了镀层的显微硬度，定性地检测了镀层的结合强度。结果表明：激光强化电沉积镀层与基体结合良好。与普通电刷镀镀层相比，激光强化电刷镀镀层显微硬度提高约200 HV，相对耐磨性增加约10倍，摩擦因数减小约1/2，晶粒细化。激光的连续性对镀层晶粒度的影响较大，对硬度影响不明显。 |
| 关键词: 激光强化 电刷镀 |
| DOI： |
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| Research on Laser Enhanced Brush Plating Ni Coating |
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YAN Tao，LIANG Zhi-jie，TAN Jun，ZHANG Ping
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Department of Equipment Remanufacture Engineering, Academy of Armored Force Engineering, Beijing 100072
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| Abstract: |
| In this work, experiments of continuous and pulsed Nd3+:YAG Laser Enhanced Brush Plating (LEBP) Ni coating were carried out. SEM was used to observe the morphologies, XRD and EDX were also used to analyse the microstructure of coating. Micro-hardness of the Ni coating was measured and compared with the ordinary brush plated Ni coating. Qualitative analysis of the adhesion between coating and substrate was done. The result revealed that the LEBP coating showed good bonding strength, its micro-hardness was increased about 200HV , relative wear resistance became 10 times higher and friction coefficient was decreased about one half that of the conventional plating layer. The continuity of laser gave an obvious effect on the size of Ni crystal grain, but less effect on the coating’s hardness. |
| Key words: laser enhanced brush-plating |
