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2222材料工程  2019, Vol. 47 Issue (6): 114-120    DOI: 10.11868/j.issn.1001-4381.2018.000277
  研究论文 本期目录 | 过刊浏览 | 高级检索 |
等离子体辅助球磨制备表面修饰片状纳米Cu粉及摩擦学性能
冀光普1,2, 何秀芳1,2, 廖海峰1,2, 戴乐阳1,2,*(), 孙迪1,2, 蔡谷昌3
1 集美大学 轮机工程学院 福建省船舶与海洋工程重点实验室, 福建 厦门 361021
2 船机检测与再制造福建省高校工程研究中心, 福建 厦门 361021
3 中国人民解放军73131部队, 福建 漳州 363113
Tribological properties of surface modified Cu nanoflakes prepared by plasma assisted ball milling
Guang-pu JI1,2, Xiu-fang HE1,2, Hai-feng LIAO1,2, Le-yang DAI1,2,*(), Di SUN1,2, Gu-chang CAI3
1 Fujian Provincial Key Laboratory of Naval Architecture and Ocean Engineering, School of Marine Engineering, Jimei University, Xiamen 361021, Fujian, China
2 Fujian Engineering Research Center of Marine Engine Detecting and Remanufacturing, Xiamen 361021, Fujian, China
3 Unit 73131 of Chinese People's Liberation Army, Zhangzhou 363113, Fujian, China
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摘要 

以硬脂酸为过程处理剂,采用等离子体辅助球磨制备表面修饰片状纳米Cu粉,并测试其摩擦学性能。结果表明:在等离子体的快速加热及电致塑性效应协同作用下,Cu粉呈现出超塑性而发生剧烈形变,辅助球磨5h制备的片状纳米Cu粉一次颗粒厚度在20nm左右。等离子体辅助球磨使片状纳米Cu粉体表面吸附并化学键合了非极性基团,Cu粉获得亲油疏水表面特性,在40CA船用润滑油中具有良好的分散性。片状纳米Cu粉严重的变形使其具有极高的活性,在摩擦过程中容易吸附铺展在摩擦副表面,使复合油有更好的抗磨性能。在高载荷、高转速工况下,片状纳米Cu粉显示出良好的减摩自修复效果,有效提高了润滑油的极压抗磨性能。

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冀光普
何秀芳
廖海峰
戴乐阳
孙迪
蔡谷昌
关键词 片状纳米Cu粉等离子体辅助球磨表面修饰超塑性摩擦学性能    
Abstract

Surface modified nano-flake Cu powder was prepared by plasma assisted ball milling by adding stearic acid as a process agent and its tribological properties were tested. The results indicate that the Cu particle exhibiting an excellent superplasticity has severe plastic deformation induced by a synergistic effect of plasma high-rate heating and electroplasticity, and the 20nm-thick flake-like Cu particles are obtained after 5h milling time of plasma milling. These nano-flake Cu particles owning oleophobicity characteristics exhibit good dispersion in the 40CA marine lubricating oil due to that the surface of Cu nano-flake adsorbs and chemically bonds with some non-polar groups under the plasma assisted ball milling with stearic acid. The severe deformation of the nano-flake Cu particles displaying high activation are easily adsorbed and spread on the surface of the friction counterpart in the process of sliding, which promotes a better wear resistance for compound lubricant with nano-flake Cu addition. Under a high rotating speed and excessive load, the nano-flake Cu powder provides excellent friction-reducing and self-repairing characters and improves the anti-wear performance under an extreme pressure condition.

Key wordsCu nanoflake    plasma assisted ball-milling    surface modification    superplasticity    tribological property
收稿日期: 2018-02-18      出版日期: 2019-06-17
中图分类号:  TB383  
基金资助:国家自然科学基金资助项目(51779103);福建省科技计划项目(2018H0026);福建省科技(文化)拥军项目(2016);厦门市科技计划项目(3502Z20173031);福建省自然科学基金项目(2019J01708)
通讯作者: 戴乐阳     E-mail: daileyang@jmu.edu.cn
作者简介: 戴乐阳(1972-), 男, 教授, 博士, 主要从事纳米润滑添加剂和船机修造技术的研究, 联系地址:福建省厦门市石鼓路176号集美大学轮机工程学院(361021), E-mail:daileyang@jmu.edu.cn
引用本文:   
冀光普, 何秀芳, 廖海峰, 戴乐阳, 孙迪, 蔡谷昌. 等离子体辅助球磨制备表面修饰片状纳米Cu粉及摩擦学性能[J]. 材料工程, 2019, 47(6): 114-120.
Guang-pu JI, Xiu-fang HE, Hai-feng LIAO, Le-yang DAI, Di SUN, Gu-chang CAI. Tribological properties of surface modified Cu nanoflakes prepared by plasma assisted ball milling. Journal of Materials Engineering, 2019, 47(6): 114-120.
链接本文:  
http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2018.000277      或      http://jme.biam.ac.cn/CN/Y2019/V47/I6/114
Fig.1  Cu粉体的SEM图像  (a)原始铜粉;(b)等离子体辅助球磨5h
Fig.2  Cu粉体的XRD谱
Fig.3  片状纳米Cu粉的TEM图像
Fig.4  硬脂酸(a)和片状纳米Cu粉(b)的红外吸收光谱
Fig.5  片状纳米Cu粉在船用40CA润滑油中分散性测试  (a)0天; (b)25天
Fig.6  100N和200N载荷下基础油和复合油的摩擦因数
Fig.7  100N和200N载荷下基础油和复合油中的磨损失重
Fig.8  100N和200N载荷下的磨痕形貌
(a)100N基础油;(b)100N复合油;(c)200N基础油;(d)200N复合油
Fig.9  200N载荷下的摩擦表面扫描电镜形貌及表面能谱    (a)基础油;(b)复合油
Fig.10  200N载荷下的摩擦表面能谱  (a)基础油;(b)复合油
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