李霖泰,吴蒙华,王元刚,王邦国,宁智.NiCl2 含量对电沉积 Ni-纳米 TiN 复合镀层过程的影响[J].表面技术,2015,44(9):7-12,28.
LI Lin-tai,WU Meng-hua,WANG Yuan-gang,WANG Bang-guo,NING Zhi.Influences of NiCl2 Content on Electrodeposited Ni-Nano TiN Composite Coating Process[J].Surface Technology,2015,44(9):7-12,28 |
| NiCl2 含量对电沉积 Ni-纳米 TiN 复合镀层过程的影响 |
| Influences of NiCl2 Content on Electrodeposited Ni-Nano TiN Composite Coating Process |
| 投稿时间：2015-05-04 修订日期：2015-09-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2015.09.002 |
| 中文关键词: Ni-纳米 TiN 复合镀 氨基磺酸镍 氯化镍 沉积速率 镀层厚度 显微硬度 微观形貌 |
| 英文关键词:Ni-nano TiN composite coating nickel sulfamate nickel chloride deposition rate coating thickness microhardness microstructure |
| 基金项目:辽宁省高等学校杰出青年学者成长计划项目(LJQ2012106) |
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| Author | Institution |
| LI Lin-tai | School of Mechanical Engineering, Dalian University, Dalian 116622, China |
| WU Meng-hua | School of Mechanical Engineering, Dalian University, Dalian 116622, China |
| WANG Yuan-gang | School of Mechanical Engineering, Dalian University, Dalian 116622, China |
| WANG Bang-guo | School of Mechanical Engineering, Dalian University, Dalian 116622, China |
| NING Zhi | School of Mechanical Engineering, Dalian University, Dalian 116622, China |
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| 中文摘要: |
| 目的 针对氨基磺酸镍体系镀镍液,优化活化剂 NiCl2 的用量,提高 Ni-纳米 TiN 复合镀层的性能。 方法 采用超声-脉冲电沉积工艺制备 Ni-纳米 TiN 复合镀层,研究 NiCl2 含量对镀液的电导率及复合镀层的厚度、显微硬度、表面微观形貌等的影响。 结果 镀液的电导率及复合镀层的厚度、显微硬度均随 NiCl2 含量的增加呈现先增大、后减小的变化趋势。 当 NiCl2 的用量为 30 g/ L 时,镀液的导电性能最佳,电导率值为 61. 3 mS/ cm,复合镀层的厚度及显微硬度均达到最大值,分别为 84 μm 和 760HV,并且复合镀层表面平整光滑,晶粒尺寸最小。 结论 NiCl2 含量对镀液及复合镀层的性能有很大影响,适量的NiCl2 可以防止阳极钝化,提高镀液的导电能力及沉积速率,使复合镀层的厚度增加,显微硬度提高,晶粒细化,微观形貌获得改善,性能提高。 适宜的 NiCl2 用量为 30 g/ L。 |
| 英文摘要: |
| Objective To optimize the nickel chloride content, and improve the performance of Ni-nano TiN composite coatings for nickel sulfamate system electrolyte. Methods The effects of different nickel chloride content on the plating solution conductivity and the thickness, microhardness, surface microstructure of Ni-nano TiN composite coating prepared by ultrasonic-electrodepositing method were studied. Results The plating solution conductivity and the thickness, microhardness of the composite coating increased firstly and decreased afterwards with the increase of nickel chloride content. When the content of nickel chloride was 30 g/ L, the bath conductivity was the best and the plating solution conductivity value was 61. 3 mS/ cm, the thickness of the composite coating reached the maximum value of 84 μm, the microhardness reached the maximum value of 760HV, at the same time, the composite coating surface was smooth and the grain size was minimal. Conclusion Nickel chloride content had a great influence on the performance of the plating solution and the composite coating. A suitable content of nickel chloride could prevent anodic passivation, increase the conductive ability of the plating solution, the deposition rate, and the thickness, microhardness of composite coating, refine the grains, and improve the microstructure and performance of Ni-nano TiN composite coating. The suitable content of nickel chloride was 30 g / L. |
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