粉末润滑界面的原位观察及润滑机制

中国机械工程

粉末润滑界面的原位观察及润滑机制

孔俊超1;王伟1;王伟2;刘焜2;王超2

1.巢湖学院机械与电子工程学院,巢湖,238000
2.合肥工业大学摩擦学研究所,合肥,230009

出版日期:2018-04-25 发布日期:2018-04-24
基金资助:
国家自然科学基金资助项目(51475135);
清华大学摩擦学国家重点实验室开放基金资助重点项目(SKLTKF13A02);
巢湖学院校级项目（XLY-201702）
National Natural Science Foundation of China（No. 51475135）

In Situ Observation and Lubrication Mechanism of Powder Lubrication Interfaces

KONG Junchao1;WANG Wei1;WANG Wei2;LIU Kun2;WANG Chao2

1.Institute of Mechanical and Electronic Engineering,Chaohu College,Chaohu,Anhui,238000
2.Institute of Tribology,Hefei University of Technology,Hefei,230009

Online:2018-04-25 Published:2018-04-24
Supported by:
National Natural Science Foundation of China（No. 51475135）

摘要/Abstract

摘要： 将松散的石墨粉导入面接触的摩擦副间隙中，在轴向力和剪切力作用下形成减摩性能良好的粉末层。利用带有CCD数码相机的光学显微镜对试件表面进行动态观测，分析表面粗糙度、载荷、滑移速率、粉末量对粉末层的破坏形式、破坏过程的影响，采用图像分割技术计算真实接触面积比。结果表明：粉末层的破坏形式包括完整、局部区域破坏、局部破坏区域扩散、粉末黏附、完全破坏5个阶段；黏附阶段存在的必要条件为重载、试件表面具有一定粗糙度，粉末量、滑移速率的增大使黏附加剧。

关键词: 光学原位观察法, 粉末层, 黏附效应, 真实接触面积比

Abstract: Loose graphite powder was used to lubricate plane contact tribopairs. A good powder layer with good anti-friction ability was observed under the effects of axial load and shear. Damage forms of powder layers were dynamically observed by optical microscope with CCD digital camera. The influences of surface roughness, load, slip velocity, powder quantity on the damage forms and processes of powder layers were analyzed. Image segmentation was used to calculate real contact area ratio. The results show that damage forms of the powder layers include five stages: complete period, partial area destruction, diffusion of partial area destruction, powder adhesion and complete destruction. The necessary conditions for adhesion stage existence are overload and a certain roughness. The increase of the powder amount and slip velocity may intensify the adhesion.

Key words: optical in situ observation, powder layer, adhesion effect, real contact area ratio

中图分类号:

TH117.3

孔俊超1;王伟1;王伟2;刘焜2;王超2. 粉末润滑界面的原位观察及润滑机制[J]. 中国机械工程.

KONG Junchao1;WANG Wei1;WANG Wei2;LIU Kun2;WANG Chao2. In Situ Observation and Lubrication Mechanism of Powder Lubrication Interfaces[J]. China Mechanical Engineering.

参考文献

[1]王伟, 孔俊超, 顾伟, 等.温成形摩擦界面的宏微观试验特性研究[J].摩擦学学报，2016，36(2)：233-239.
WANG Wei, KONG Junchao, GU Wei, et al. Experimental Study on Friction Interface to Macro and Micro Powder Lubricant Layer under Warm Forming [J]. Tribology , 2016,36(2):233-239.
[2]王观民,张永振,杜三明,等.不同气氛环境重钢/钢摩擦副的高速干滑动摩擦磨损特性研究[J].摩擦学学报, 2007,27(4):346-351.
WANG Guanmin, ZHANG Yongzhen, DU Sanming, et al. Study on Triological Behavior of Steel-brass Couples in Different Atmosphere under High Speed and Dry Sliding [J].Tribology, 2007, 27(4):346-351.
[3]潘广镇, 齐乐华, 付业伟, 等.石墨改性碳布复合材料湿式摩擦磨损性能研究[J].摩擦学学报,2012,32(4):360-366.
PAN Guangzhen, QI Lehua, FU Yewei, et al. Wet Friction and Wear Behavior of Graphite-filled Carbon Fabric Composites [J].Tribology, 2012, 32(4):360-366.
[4]ROBERTS A D. Squeeze Films between Rubber and Glass [J]. Journal of Physics D: Applied Physics, 2002, 4(3):423-432.
[5]陈卓君, 张祖力, 贾春德, 等.钢/玻璃的摩擦磨损性能动态观测研究[J].润滑与密封，2005, 4:88-90.
CHEN Zhuojun, ZHANG Zuli, JIA Chunde, et al. Research of Friction and Wear Behavior of Steel-Glass in Dynamic Observation [J]. Lubrication Engineering, 2005, 4:88-90.
[6]SHEASBY J S, JIA C D. The Direct Observation of Wear Meatal Transfer and Calling in Metallic Systems [R]. Florida: Non-ferrous Metals Committee of Metallurgical Society and Erosion and Wear G2 Committee, 1986.
[7]SHEASBY J S. Direct Observation of Dry Wear [J]. Wear, 1983,89(2): 173-183.
[8]EINTHOVEN J, SPIKES H A. Infrared and Visual Study of the Mechanism of Scuffing [J]. Tribology Transactions, 1996, 39(2):441-447.
[9]谭桂斌, 刘书海.基于光学原位观测柔软摩擦副的接触率研究[J].中国科学,2013(4):390-396.
TAN Guibin, LIU Shuhai. Research of Contact Ratio of Soft Friction Pair Based on Optical Situ Observation [J]. Science China, 2013,(4):390-396.
[10]GHATAK A. Confinement Induced Instability of Thin Elastic Film [J]. Physical Review Letters, 2006, 73(4): 041601.
[11]TAN G B, LIU S H, WANG D G, et al. In Situ Observation of Wax-in-oil Flow in Rough Soft Contact [J]. Tribology Letters, 2013, 52(1): 93-103.
[12]AZUSHIMA A, YONEYAMA S, YAMAGUCHI T, et al. Direct Observation of Micro Contact Behavior at the Interface between Tool and Work Piece in Lubricated Upsetting [J]. CIRP Annals—Manufacturing Technology, 1996, 45(1): 205-210.
[13]IORDANOFF I, BERTHIER Y, DESCATES S, et al. A Review of Recent Approaches for Modeling Solid Third Bodies [J]. Journal of Tribology, 2002, 124(4): 725-735.
[14]WANG W B, WANG W, LIU K. Analysis of the Mechanical Properties of Large Particles in the Contact Process and Their Impact on Powder Lubrication[J]. Tribology—Materials, Surfaces & Interfaces , 2015, 9(2):99-104.
[15]刘金龙，刘洪涛，丁静倩.黄铜/钢摩擦副接触面积对磨损的影响[J]. 摩擦学学报，2010,30(3):279-284.
LIU Jinlong, LIU Hongtao, DING Jingqian. Effect of Contact Area on Wear of Brass/Steel Tribo-couple[J]. Tribology, 2010,30(3):279-284.