-
摘要钛合金的耐磨损性能差，这限制了其在摩擦相关领域的应用。在钛合金表面进行等离子电解氧化，形成高硬度的氧化物陶瓷涂层，改善其耐磨性。另外，采用等离子电解氧化技术和激光表面织构化技术对钛合金进行复合处理，可以在其表面形成多尺度微孔结构，可以提高表面润滑涂层的结合强度，增强钛合金表面对润滑剂的储存效果。本文通过对钛合金先进行激光表面织构化处理，然后进行等离子电解氧化，再沉积银和二硫化钼膜，测试钛合金表面的室温和高温摩擦学性能，利用多种分析测试手段，分析摩擦表面的成分和形貌，总结磨损机制。32978
- 上一篇：高强骨料对水泥基复合材料性能的影响研究
- 下一篇：STF高性能纤维柔性防护材料的参数优化及防刺性能研究
结果表明，经等离子电解氧化和激光表面织构化处理复合处理的钛合金储存润滑剂银和二硫化钼的能力得到了大幅度提高。室温下，涂覆有二硫化钼的试样的摩擦系数在较长时间内保持在较低水平；高温下，二硫化钼被氧化，润滑效果降低，贵金属银则在对摩材料上形成了转移膜，使得摩擦系数由最初的较高逐渐的降低至较低水平，有效的保护了试样表面。
关键词 等离子电解氧化；激光表面织构化；镀银；二硫化钼；耐磨性
毕业论文设计说明书外文摘要
Title Tribological properties of laser surface textured and plasma
electrolytic oxidation duplex-treated Ti6Al4V alloy deposited
with Ag/MoS2 film
Abstract
The wear resistance of titanium alloy is poor, which limits its application in friction related field. The oxide ceramic coating with high hardness was formed by plasma electrolytic oxidation process on the surface of titanium alloy , which improves its wear resistance. In addition, the combination of plasma electrolytic oxidation (PEO) technology and laser surface texturing (LST) technology could form multi-scale microporous structure on the titanium alloy surface, and can improve the bonding strength of surface lubricating coating and reinforce the lubricant storage of solid lubricants. Soft silver and MoS2 films were formed on LST/PEO duplex-treated surface as solid lubricants. The tribological properties of titanium alloy surface from room to high temperature were tested. The surface composition and morphology were analyzed by a variety of test means and the friction and wear mechanisms were summarized.
The results showed that the titanium alloy which treated by the plasma electrolytic oxidation and laser surface texture process is helpful for preserving more silver and molybdenum disulfide lubricants. At room temperature, the friction coefficient of samples burnished with MoS2 films maintains at a relatively low level in a long time. At high temperature, MoS2 is oxidized and its lubricating effect is reduced. While the precious metals silver can form soft transfer film on the friction counterface material, which makes the friction coefficient maintain a lower level.
Keywords Plasma electrolytic oxidation; Laser surface texturing; Silver; Molybdenum disulfide; Wear resistance
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 激光表面织构化 3
1.5 润滑 4
2 实验部分 5
2.1 基体材料及预处理 5
2.2 激光表面织构化处理 5
2.3 钛合金表面涂层制备 5
2.5 MoS2的涂抹 6
2.6 摩擦磨损实验 6
3 结果分析 8
3.1 LST/PEO 8
3.2 LST/PEO/MoS2 12
3.3 LST/PEO/MoS2/Ag 17
结论 22
致谢 23
-
钛合金激光+PMIG对接焊工艺...
-
纯钛表面纳米化及其生物活性的研究
-
铝表面堆焊Cr17不锈钢层的工艺试验研究
-
钢基体表面等离子弧熔覆层组织与性能
-
钛合金薄壁筒体及挂件PMIG焊接工艺试验研究
-
膨胀石墨的表面修饰与纳米复合材料的制备
-
铝表面堆焊Fe-Al合金层的工艺试验研究
乳业同业并购式全产业链...
酸性水汽提装置总汽提塔设计+CAD图纸
河岸冲刷和泥沙淤积的监测国内外研究现状
杂拟谷盗体内共生菌沃尔...
当代大学生慈善意识研究+文献综述
电站锅炉暖风器设计任务书
十二层带中心支撑钢结构...
大众媒体对公共政策制定的影响
中考体育项目与体育教学合理结合的研究
java+mysql车辆管理系统的设计+源代码