樊艳娥,杨绿,张进,吴怀超,王玥.碳纳米管增强Cu-Ni复合镀层制备及其性能[J].表面技术,2019,48(12):114-124.
FAN Yan-e,YANG Lyu,ZHANG Jin,WU Huai-chao,WANG Yue.Fabrication and Properties of Cu-Ni Composite Coating Reinforced by Carbon Nanotube[J].Surface Technology,2019,48(12):114-124 |
| 碳纳米管增强Cu-Ni复合镀层制备及其性能 |
| Fabrication and Properties of Cu-Ni Composite Coating Reinforced by Carbon Nanotube |
| 投稿时间：2019-10-30 修订日期：2019-12-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2019.12.013 |
| 中文关键词: 电沉积 CNT Cu-Ni复合镀层 显微硬度 摩擦磨损性能 抗腐蚀性能 电化学阻抗谱 |
| 英文关键词:CNT composite coating micro-hardness friction and wear properties corrosion resistance electrochemical impedance spectroscopy |
| 基金项目:国家自然科学基金资助项目（51465008，51465009）；贵州大学引进入才项目（(2013)10） |
|
|
| Author | Institution |
| FAN Yan-e | School of Mechanical Engineering, Guizhou University, Guiyang 550025, China |
| YANG Lyu | School of Mechanical Engineering, Guizhou University, Guiyang 550025, China |
| ZHANG Jin | School of Mechanical Engineering, Guizhou University, Guiyang 550025, China |
| WU Huai-chao | School of Mechanical Engineering, Guizhou University, Guiyang 550025, China |
| WANG Yue | School of Mechanical Engineering, Guizhou University, Guiyang 550025, China |
|
| 摘要点击次数: |
| 全文下载次数: |
| 中文摘要: |
| 目的 提升Cu-Ni复合镀层的硬度、摩擦磨损与抗腐蚀性能。方法 在五水硫酸铜镀液中添加六水合硫酸镍和碳纳米管（CNT），采用电共沉积方法制备Cu-Ni、Cu-Ni/CNT复合镀层。利用显微硬度测试仪、摩擦磨损试验机测试CNT增强复合镀层（Cu-Ni/CNT）的硬度和摩擦磨损性能。借助扫描电子显微镜（SEM）、能谱仪（EDS）表征镀层的表面形貌、元素分布及磨斑表面特征。在模拟海水（3.5%NaCl）溶液中测试镀层的电化学阻抗谱（Nyquist）和Tafel曲线。结果 Ni、Cu共沉积时，更多Ni原子被Cu原子置换，镀层硬度相比于纯镍镀层略有下降，但是Cu-Ni固溶体形成后固溶强化使耐磨损性增强。CNT共沉积镶嵌在Cu-Ni复合镀层中，其晶粒细化和弥散强化效应使镀层硬度提高，在考察范围内，最高达到560.59HV。当Cu-Ni共沉积镀液中加入0.08%（质量分数）CNT时，复合镀层中CNT的物理屏蔽使其具有最高的腐蚀电位（-436.08 mV）、最低的自腐蚀速率与最好的抗腐蚀性能，其镀层电阻（Rc）为1573 Ω•cm2；相比于纯Ni镀层，腐蚀抑制效率为95.86%；镀层平均摩擦系数最低，为0.52，耐磨性最佳。结论 共沉积时，适当配比CNT的加入可有效增强Cu-Ni复合镀层的硬度、摩擦磨损性能和抗腐蚀性能。 |
| 英文摘要: |
| The work aims to improve the hardness, friction and wear resistance and corrosion resistance of Cu-Ni composite coating. Cu-Ni and Cu-Ni/CNT composite coatings were prepared through electro-codeposition by adding nickel sulfate hexahydrate and carbon nanotube (CNT) in copper sulfate pentahydrate plating solution. The hardness and friction and wear properties of composite coating reinforced by CNT (Cu-Ni/CNT) were investigated by micro-hardness meter and tribometer; and the surface morphology, element distribution and morphology of wear scar of the coating were characterized by scanning electron microscope (SEM) and energy dispersive spectrometer (EDS). The electrochemical impedance spectroscopy (Nyquist) and Tafel curves of the coatings were measured in 3.5%NaCl solution. When Cu and Ni were co-deposited, more Ni atoms were replaced by Cu atoms, which caused the hardness of the coating slightly lower than that of pure nickel coating, but the wear resistance of the coating was enhanced due to solid solution after the formation of Cu-Ni solid solution. CNT co-deposition in Cu-Ni composite coating resulted in grain refinement and dispersion strengthening effect, which increased the coating hardness to 560.59HV in the range of investigation. When the Cu-Ni co-deposition plating solution was added with CNT with the mass percentage of 0.08%, the composite coating presented the highest corrosion potential of -436.08 mV due to the physical shielding of CNT, and the lowest self-corrosion rate and corrosion resistance. The coating resistance Rc was (1573 Ω•cm2). Compared with the pure Ni coating, the corrosion suppression efficiency of Cu-Ni/CNT (0.08%) was 95.86%, the average friction coefficient of the coating was 0.52 which was the lowest, and the wear resistance was also the best. In the co-deposition process of Cu-Ni/CNT, the addition of CNT with appropriate mass percentage can effectively enhance the hardness, friction and wear properties and corrosion resistance of Cu-Ni composite coating. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|
渝公网安备 50010702501715号