曹磊,万勇,高建国.化学织构化45#钢表面涂覆MoS2 薄膜的摩擦学性能[J].表面技术,2016,45(10):83-88.
CAO Lei,WAN Yong,GAO Jian-guo.Tribological Performance of MoS2 Film on Chemically Textured Surface of 45# Steel[J].Surface Technology,2016,45(10):83-88 |
| 化学织构化45#钢表面涂覆MoS2 薄膜的摩擦学性能 |
| Tribological Performance of MoS2 Film on Chemically Textured Surface of 45# Steel |
| 投稿时间：2016-03-26 修订日期：2016-10-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2016.10.013 |
| 中文关键词: 化学刻蚀 表面织构 固体润滑剂 复合润滑膜 摩擦 磨损 |
| 英文关键词:chemical etching surface texture solid lubricant composite lubricating film friction wear |
| 基金项目:国家自然科学基金（51375249）；科技部质检行业公益项目（201410083） |
|
|
|
|
| 摘要点击次数: |
| 全文下载次数: |
| 中文摘要: |
| 目的 提高干摩擦条件下45#钢表面的减摩耐磨性能。方法 采用FeCl3 与HCl 混合刻蚀液对45#钢表面进行化学织构化处理，并在织构表面涂覆MoS2 形成复合润滑薄膜。通过摩擦磨损实验，评价了表面织构以及复合润滑薄膜的减摩耐磨特性，并通过扫描电子显微镜对磨痕进行分析。结果 进行化学织构化处理后，45#钢表面形成了均匀的微坑结构及由点蚀产生的孔洞结构，表面粗糙度Ra 上升到了0.89 μm，与未刻蚀的样品相比，刻蚀后表面的摩擦系数降低了23%，其摩擦过程也更稳定。这可能是由于刻蚀后产生的微坑与点蚀孔洞结构能够捕获磨屑，减少磨粒磨损。在经化学刻蚀后的织构表面上构筑了MoS2 薄膜，与未刻蚀的样品相比，这种表面的摩擦系数得到了极大的降低，能达到0.1 左右，其耐磨寿命也得到了极大的延长，磨痕宽度也有了明显的降低。其主要原因可能是由于刻蚀后产生的微坑与点蚀孔洞结构存储的固体润滑剂，在摩擦过程中由对偶件带入摩擦区域进行了有效润滑。结论化学刻蚀形成的表面织构能够在一定程度上提高45#钢表面的摩擦学性能，涂覆MoS2 形成的复合润滑膜能够极大地降低45#钢表面的摩擦系数并大大延长其耐磨寿命。 |
| 英文摘要: |
| The work aims to improve the tribological performance of the surface of 45# steel under dry friction. The 45# steel surface was chemically textured by solution of FeCl3 and HCl. Then the textured surface was burnished by solid lubricant MoS2 to create a composite lubricating film. Friction and wear tests were taken to evaluate anti-wear properties of the textured surface and composite lubricating film. The grinding cracks were analyzed by SEM. There were uniform micro-pits and micro-pores on the surface of 45# steel after chemical texturing. The surface roughness Ra was increased to 0.89 μm. As compared to the non-textured sample, the friction coefficient of the surface after chemical etching decreased 23%, and the course of friction became more stable. The phenomenon might result from capture of wear debris by the micro-pits and micro-pores above-mentioned, and then the abrasive wear of particles was significantly reduced. Compared with the samples not burnished by MoS2, the friction coefficient of the chemically textured sample with MoS2 lubricating film was significantly decreased to about 0.1. The friction durability was also prolonged apparently. In the same time, the width of wear scratch became narrower. This was mainly due to the effective lubrication conducted by the solid lubricant stored in micro-pits and micro-pores after the chemical etching and brought into the friction zone by the coupled parts in the process of friction. In conclusion, the tribological performance of the surface of 45# steel can be improved to some degree by chemical texturing. The composite lubricating film formed by applying MoS2 can remarkably reduce the friction coefficient of 45# steel surface and prolong its friction durability at the same time. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
渝公网安备 50010702501715号