| 电刷镀镍／镍包纳米Al2O3颗粒复合镀层微动磨损性能研究 |
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| 引用本文： | 徐龙堂,周美玲,等.电刷镀镍／镍包纳米Al2O3颗粒复合镀层微动磨损性能研究[J].摩擦学学报,2001,21(1):24-27. |
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| 作者姓名： | 徐龙堂 周美玲 |
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| 作者单位： | 1. 中国机械工程学会表面工程研究所,
2. 北京工业大学材料 学院, |
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| 基金项目： | 中科院兰州化物所固体润滑国家重点实验室开放基金资助（9706）；清华大学摩肩接踵学国家重点实验室基金资助
（SKLT98-7） |
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| 摘 要： | 应用电刷镀技术制备了含有镍包纳米Al2O3颗粒的镍基复合镀层。与快速镍镀层对比考察了该复合镀层高温硬度的变化，同时还从微动磨损角度考察了该复合镀层耐磨性和摩擦系数的变化。结果表明：与快镍镀层相比，镍／镍包纳米Al2O3复合镀层具有更高的高温硬度和更好的抗微动磨损性能；复合镀层在400℃左右表现出较明显的强化趋势，具有较好的综合性能；纳米Al2O3颗粒使复合镀层的结构致密和细化，在磨损过程中起到了一定的减轻粘着和降低摩擦的作用；复合镀层的微动磨损机理主要为粘着磨损。
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| 关 键 词： | 电刷镀 镍复合镀层 纳米颗粒 微动磨损 |
| 文章编号： | 1004-0595(2001)01-0024-04 |
| 修稿时间： | 2000年3月3日 |
Anti-fretting Properties
of Ni/Ni-coated nano-Al2O3 Co mposite Coating Prepared by
Electro-brush Plating |
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| XU Long-tang.Anti-fretting Properties
of Ni/Ni-coated nano-Al2O3 Co mposite Coating Prepared by
Electro-brush Plating[J].Tribology,2001,21(1):24-27. |
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| Authors: | XU Long-tang |
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| Abstract: | Nickel-coated-nano-Al2O3-containing Ni-b ased composite coating (coded as Ni/Ni-coated Al2O3) was prepared by electr o-brush plating. The fretting properties of the composite coating were investig ated on an SRV friction and wear tester. As the results, the composite coating h as higher micro-hardness than the conventional electro-plated Ni coating. This is especially so at relatively high temperature. Ni/Ni-coated Al2O3 compos ite coating shows better resistance to fretting than high-speed nickel coating. It registers a lower friction coefficient than high-speed nickel coating in sl iding against AISI 1045 steel as well. This is attributed to the strengthening e ffect of the composite coating and the reinforcing effect of nano Al2O3 at r elatively high temperature. The XPS and EDS analytical results of the worn coati ng surfaces indicate that the composite coating is characterized by adhesion and transfer of worn out materials in sliding against AISI 1045 steel. |
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