| 复合电铸制备Ni-石墨复合材料工艺及其沉积机理 |
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| 引用本文： | 赵海军,刘磊,朱建华,沈彬,胡文彬.复合电铸制备Ni-石墨复合材料工艺及其沉积机理[J].复合材料学报,2005,22(3):92-97. |
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| 作者姓名： | 赵海军 刘磊 朱建华 沈彬 胡文彬 |
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| 作者单位： | 上海交通大学金属基复合材料国家重点实验室,上海,200030 |
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| 基金项目： | 国家高技术研究发展计划(“863”计划)项目(2002AA334010)，上海市科委重点新材料项目(035211037)，上海市科技发展基金项目(0211nm052) |
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| 摘 要： | 采用复合电铸技术制备了Ni-石墨自润滑复合材料, 重点研究了工艺参数(微粒浓度、电流密度、电铸液流动速度及温度和p H 值) 对复合材料中石墨微粒含量的影响。结果表明, 提高镀液中微粒浓度使复合材料中石墨含量增大, 最后趋于稳定值。电流密度和镀液流动速度使石墨含量存在最大值, 但是温度和p H 值的增加却使之降低。复合电铸沉积机理Guglielmi 模型只在低电流密度条件下适用, 但不适用于高电流密度的条件。镀液中石墨微粒含量增大, 复合材料的硬度和摩擦系数降低, 磨损失重减小, 但是石墨微粒30 g/ L 时的磨损量增加。
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| 关 键 词： | 复合电铸 镍-石墨 金属基复合材料 电沉积机理 |
| 文章编号： | 1000-3851(2005)03-0092-06 |
| 收稿时间： | 2004-07-02 |
| 修稿时间： | 2004-12-27 |
COMPOSITE ELECTROFORMING TECHNOLOGY OFFABRICATING NICKEL-GRAPHITE COMPOSITES |
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| ZHAO Haijun,LIU Lei,ZHU Jianhua,SHEN Bin,Hu Wenbin.COMPOSITE ELECTROFORMING TECHNOLOGY OFFABRICATING NICKEL-GRAPHITE COMPOSITES[J].Acta Materiae Compositae Sinica,2005,22(3):92-97. |
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| Authors: | ZHAO Haijun LIU Lei ZHU Jianhua SHEN Bin Hu Wenbin |
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| Affiliation: | State Key Laboratory of Metal Mat rix Composites, Shanghai Jiao Tong University, Shanghai 200030, China |
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| Abstract: | The process of the elect rolytic codeposition of nickel-graphite in nickel sulfamate solution was investigated. The result s show that the plating variables have different influence on the volume f raction of graphite particlesin elect rodeposited composites. The volume f raction of graphite incorporated in deposit increases with increasingconcent ration of suspended particles in solution, and then remains constant . There are maximums related to the current density and flow velocity, while temperature and p H values exert an adverse effect . Guglielmi’s model can beused at low current densities for the composite elect roforming system. The microhardness and friction coefficient ofNi-graphite composites decrease with increasing particle concent ration in solution. The wear mass loss also decreases, but it increases at the graphite concent ration of 30 g/ L. |
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| Keywords: | composite electroforming nickel-graphite metal matrix composites mechanism of composite electrodeposition |
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