CeO2颗粒尺寸和添加量对镍基复合镀层摩擦学性能的影响

摘要普通金属基镀层不具有润滑特性，在镀层中复合固体润滑剂可在摩擦过程中释放润滑剂而具有低摩擦特性。本文通过在镍镀层内添加CeO2颗粒制备镍基复合镀层，研究了微粒的添加量、电镀正负向电流大小等参数对镀层性能的影响，探讨了镀层摩擦系数和磨损率随微粒添加量、载荷的变化规律。64032

结果表明，加入CeO2颗粒后得到的镀层与基体之间结合较好；复合镀层的摩擦系数随镀液中CeO2颗粒添加量（g/L）增加而先降低后升高，而磨损率随CeO2颗粒添加量增大而升高；复合镀层的摩擦系数随正向电流的增加而摩擦系数增大。

毕业论文关键词润滑复合镀层耐磨摩擦系数

毕业设计说明书（论文）外文摘要

Title CeO2 particles size and adding quantity on nickel-based composite coating tribological performance impact

Abstract Common metal coatings do not have lubrication characteristics. The solid lubricant in composite coating can be released in friction process and endow it low friction properties. This article by adding the CeO2 particles in nickel plating in the preparation of nickel-based composite coatings, the particle content and plating parameters such as positive and negative to the current size of the effect on the properties of coating, coating friction coefficient and wear rate are discussed along with the particle content, the change rule of the payload.

The results show that the addition of CeO2 particles obtained after binding between the coating and the substrate is preferably ; composite coating bath friction coefficient of CeO2 particles are added amount (g / L) increased first and then decreased , and the wear rate with CeO2 particles increasing the amount added is raised ; composite coating with the friction coefficient of the forward current increases and the friction coefficient increases .

Keywords lubrication； composite plating； wear-resisting； friction coefficient

1 引言 1

1.1 电沉积纳米复合镀层 1

1.2 镍基自润滑复合镀层的概述 4

1.3 镍基自润滑镀层的制备方法 6

1.4 镀膜方法 7

2 实验部分 9

2.1 复合镀层的制备 9

2.2 镀层表征及性能测试 12

3 实验结果及分析 14

3. 1镀层表面形貌 14

3. 2 Ni-n CeO2镀层截面的电子显微图像 14

3．3 XRD物相分析和拉曼分析 16

3. 4镀层显微硬度实验数据分析 17

3．5摩擦磨损性能分析 18

3．6电镜和能谱 23

结论 28

致谢 29

参考文献 30

1 引言

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