激光表面织构化对GCr15钢摩擦磨损性能的影响

胡天昌; 丁奇; 胡丽天

激光表面织构化对GCr15钢摩擦磨损性能的影响

胡天昌^1,2,
丁奇^1,2,
胡丽天^3, ,

1.
1. 中国科学院兰州化学物理研究所固体润滑国家重点实验室,甘肃兰州 730000
2.
2. 中国科学院研究生院,北京 100039
3.
中国科学院兰州化学物理研究所固体润滑国家重点实验室,甘肃兰州 730000

基金项目:

国家重点基础研究发展规划项目(973) (2011CB706603)资助.

详细信息

中图分类号: TH117.3
计量
- 文章访问数: 2528
- HTML全文浏览量: 37
- PDF下载量: 1850
出版历程
- 收稿日期: 2011-03-03
- 修回日期: 2011-05-29

The Effect of Laser Texturing of GCr15 Steel Surfaces on Their Tribological Properties

1.
1. State Key Laboratory of Solid Lubrication,Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
2.
2. Graduate School, Chinese Academy of Sciences, Beijing 100039, China
3.
State Key Laboratory of Solid Lubrication,Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China

Funds:

The project was supported by the National Key Basic Research Program of China (973) (2011CB706603).

摘要

摘要: 本文利用Nd:YAG固体脉冲激光对GCr15钢样品表面进行了微坑织构化处理,考察了激光表面织构参数对其摩擦性能的影响,同时通过扫描电镜等对磨斑表面进行了分析.结果表明:与光滑面试样相比,经织构化处理的样品表面在干摩擦条件下虽然摩擦系数较高,但表现出了较好的抗磨性能;在贫油润滑条件下,织构面的摩擦系数与磨损均明显小于光滑面;在低载低速下较小孔径织构面摩擦系数较小,随着速度及载荷的增大,较大孔径织构面表现出更好的摩擦学性能.采用Stribeck曲线探讨了织构化表面与光滑面在贫油润滑下的润滑机理,结果表明织构面在试验条件下均保持油膜流体润滑状态.
- GCr15钢 /
- 激光织构化 /
- Stribeck曲线 /
- 摩擦磨损
Abstract: The surface textures on GCr15 steel were produced with a solid-state pulse Nd:YAG laser. The effects of laser texturing parameters on tribological performance were investigated. The wear scars were analyzed using scanning electron microscopy. The results show that laser-textured specimens exhibited higher friction coefficients but excellent antiwear properties compared with untextured specimens in dry friction. Under poor lubricated condition, the friction coefficients and wear of textured surfaces were lower than those of untextured surfaces. The friction coefficients of the surface with smaller dimples were lower than those of others under low load at low velocity. However, with the increasing of load the surfaces with larger dimples exhibited lower friction coefficients. Lubrication mechanism was investigated by stribeck curve. It was found that textured surfaces maintained in hydrodynamic regime for all applied loads under poor lubrication.
- GCr15steel /
- laser texturing /
- stribeck curve /
- friction and wear

HTML全文

参考文献(13)

[1]	A Erdemir. Review of engineered tribological interfaces for improved boundary lubrication [J]. Tribology International, 2005, 38: 249-256.
[2]	Li J Q, Zhu H. Surface texture and its influence on tribological properties [J]. Lubrication Engineering, 2009,34(2):94-97(in Chinese).
[3]	Han Z L, Wang J D, Chen D R. Drag reduction by dimples on surfaces in plane-plane contact lubrication [J]. Tribology, 2009,29(1): 10-16(in Chinese).
[4]	G Dumitru, V Romano, H P Weber. Laser microstructuring of steel surfaces for tribological applications [J]. Appl Phys A ,2000, 70:485-487.
[5]	Miki Nakano, Atsuko Korenaga ,Atsushi Korenaga, et al. Applying micro-texture to cast iron surfaces to reduce the friction coefficient under lubricated conditions [J]. Tribol Lett, 2007, 28:131-137.
[6]	M Geiger, S Roth, W Becker. Influence of laser-produced microstructures on the tribological behaviour of ceramics [J].Surface and Coatings Technology,1998,100-101: 17-22.
[7]	Jiang L, Ma G L, Wang X L. Lubrication properties of surface texture on PDMS [J]. Tribology, 2010,30(3): 262-267(in Chinese).
[8]	Peng X D, Du D B, LI J Y. Effect of different section profile micro-pores on seal performance of a laser surface textured mechanical seal [J]. Tribology, 2006,26(4): 367-371(in Chinese).
[9]	I Etsion. State of the art in laser surface texturing [J]. Journal of Tribology, 2005,127:248-253.
[10]	Xu T, Zuo W J, Xu T S , et al. Numerical simulation of fluid-solid coupling for lubricating oil extrusion process between cylinder and piston with micro-pits [J]. Tribology, 2009,29(4): 335-340(in Chinese).
[11]	I Etsion, E Sher. Improving fuel efficiency with laser surface textured piston rings [J]. Tribology International, 2009, 425:542-547.
[12]	M Varenberg, G Halperin, I Etsion. Different aspects of the role of wear debris in fretting wear [J]. Wear, 2002, 252: 902-910.
[13]	A Kovalchenko, O Ajayi, A Erdemir, et al. The effect of lasersurface texturing on transitions in lubrication regimes during unidirectionalsliding contact [J]. Tribol Int, 2005, 38 (3):219-225.