摘要钛合金的滑动摩擦性能较差，它的磨损对于材料的使用性能的破坏程度较大。为了 更大限度地保持钛合金原有的强度与密度等优良的特性，改善钛合金的摩擦性能，本课 题拟采用等离子电解氧化技术（PEO）形成一层陶瓷涂层，通过配制一定浓度以及成分配 比的电解液，在较优化的电压电流以及电频等条件下对钛合金表面部分进行等离子电解 氧化，产生具有一定摩擦性能的表面陶瓷涂层，进而改善钛合金表面的摩擦性能。同时， 采 用浸 渍 提拉 法 在经 微 弧氧 化 处理 后 的钛 合 金表 面 制备 一 层生 物 相 容性 优 异的 UHMWPE 润滑膜，以改善其生物摩擦学性能和承载能力。研究氧化电压、UHMWPE 溶 液的浓度、提拉速度等工艺参数对膜层厚度和表面生物摩擦学性能的影响。采用光学显 微镜观察膜层微观结构，接触角测量仪评价膜层的润湿性，摩擦磨损机测试 UHMWPE 润 滑膜的生物摩擦学性能。75286

毕业论文关键词 等离子电解氧化 超高分子量聚乙烯膜 电参数 摩擦磨损

毕 业 设 计 说 明 书 外 文 摘 要

Title Preparation and tribological properties study of titanium surface of the ceramic / polymer composite lubricant coating

Abstract Sliding friction properties of titanium alloys is poor, wearing of it will cause huge damage to using properties of materials。 In order to retain excellent characteristics such as the original Titanium strength and density, improve the friction properties of titanium alloy to a greater extent , the subject uses the plasma electrolytic oxidation (PEO) technique to form a layer of ceramic coating, as well as through the preparation of a certain concentration and distribution ratio of electrolyte in the more optimized voltage and electric current frequency and other conditions on the surface portion of the titanium plasma electrolytic oxidation, producing a surface ceramic coating which has a certain friction properties, so as to improve the friction properties of titanium surface。 At the same time, this subject uses the dip-coating method to obtain an excellent layer of UHMWPE lubricating film which is bio-compatible on the surface of titanium after micro-arc oxidation process for preparing , in order to improve the tribological properties and carrying capacity。 Exploring how the oxidation voltage,the concentration of UHMWPE solution,pulling speed and other parameters effect the thickness and tribological properties of UHMWPE film。Using an optical microscope to observe the microstructure of UHMWPE film，a contact angle measurement to evaluate its wettability and a friction and wear tester to evaluate the tribological properties of it。

Keywords    PEO   UHMWPE film   electrical parameter   friction and wear

本科毕业设计说明书 第 I 页

目 次

1 绪论 1

1。1 引言 1

1。2 钛及钛合金 1

1。3 等离子电解氧化 2

1。4 超高分子量聚乙烯 3

1。5 本课题研究内容 4

2 实验内容 6

2。1 实验材料及设备 6

2。2 等离子电解氧化制备陶瓷涂层 6

2。3 超高分子量聚乙烯粉末的加热溶解