| 引用本文: | 郜家伟,姚廷强,谢家琛,李廷涛,霍冀鲁.不同因素下镍铜双层膜表面摩擦行为的研究[J].材料科学与工艺,2023,31(2):50-59.DOI:10.11951/j.issn.1005-0299.20220174. |
| GAO Jiawei,YAO Tingqiang,XIE Jiachen,LI Tingtao,HUO Jilu.Friction behavior of nickel-copper bilayer film surfaces under different factors[J].Materials Science and Technology,2023,31(2):50-59.DOI:10.11951/j.issn.1005-0299.20220174. |
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| 摘要: |
| 材料在摩擦接触过程中的弹塑性变形对基体的力学性能具有重要影响。为研究镍铜双层膜在接触过程中的变形行为和力学特性,本文从原子轨迹、原子晶格结构变化、接触力和基体内部位错等方面,详细研究了表面纹理密度、纹理方向、晶体学方向、磨粒半径和接触深度等因素对摩擦接触过程的影响。结果表明:纳观纹理表面以及镀层的引入对接触力产生影响。镍膜晶体学方向对滑动接触过程影响显著,存在接触力最小的晶体学方向；凸体的分布角度对摩擦过程的影响较小；在界面作用下,特定纹理密度表现出一定的减摩作用；基体材料的接触力随着磨粒半径和接触深度的增大而增大；在不同因素及水平下,基体表现出不同的位错缺陷程度和原子堆积现象。 |
| 关键词: 纹理表面 黏滑摩擦 镍铜基体 减摩抗磨 分子动力学模拟 |
| DOI：10.11951/j.issn.1005-0299.20220174 |
| 分类号:TH117.3 |
| 文献标识码:A |
| 基金项目:国家自然科学基金资助项目(12162016). |
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| Friction behavior of nickel-copper bilayer film surfaces under different factors |
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GAO Jiawei, YAO Tingqiang, XIE Jiachen, LI Tingtao, HUO Jilu
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(Faculty of Mechanical and Electrical Engineering, Kunming University of Science and Technology, Kunming 650500, China)
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| Abstract: |
| The elastoplastic deformation of materials during frictional contact has an important impact on the mechanical properties of the substrates. In order to study the deformation behavior and mechanical properties of Ni-Cu bilayers during contact, the effects of different influencing factors such as surface texture density, texture direction, crystallographic orientation, abrasive grain radius, and contact depth on the frictional contact process were investigated in detail in terms of atomic trajectory, atomic lattice structure, contact force, and internal substrate dislocation. Results showed that the introduction of nano-textured surfaces and coatings had a significant effect on the contact force. The crystallographic orientation of the nickel film had a significant effect on the sliding contact process, and there was a crystallographic orientation with the smallest contact force. The distribution angle of the rectangular convex body had little influence on the friction process. When subjected to the action of the interface, the specific texture density showed certain friction reduction effect. The contact force of the substrate material increased with the increase in the abrasive grain radius and the contact depth. Under different factors and levels, the substrate exhibited varying degrees of dislocation defects and atomic stacking. |
| Key words: textured surface stick-slip friction nickel-copper substrate friction-reducing and antiwear molecular dynamics simulation |
