首页 | 本学科首页   官方微博 | 高级检索  
     


Surface texturing by pulsed Nd:YAG laser
Authors:LM Vilhena  M Sedla ek  B Podgornik  J Viintin  A Babnik  J Moina
Affiliation:aUniversity of Ljubljana, Centre for Tribology and Technical Diagnostics, Bogisiceva 8, SLO 1000 Ljubljana, Slovenia;bUniversity of Ljubljana, Faculty of Mechanical Engineering, Ljubljana, Slovenia
Abstract:Introducing specific textures on a tribological surface can contribute to friction reduction in sliding contacts. In the present paper, a pulsed Nd:YAG laser emitting at 1064 nm, was used against 100Cr6 steel samples in order to produce well-defined surface micro-pores, which can act as lubricant reservoirs, micro-hydrodynamic bearings as well as traps for wear debris. Due to the high flexibility of the laser system, structural features such as shape, size, density and depth can be varied easily by changing the laser parameters. To optimize the parameters of the laser surface texturing process, an investigation was performed using different pulse numbers, various pulse energies and two different modes (single- and multi-mode). The microtextures were characterized with optical microscopy, scanning electron microscopy (SEM) and by topography techniques. The relationship between the laser processing parameters and qualitative and quantitative profile of the micro-pores was studied. Tribological testing of laser textured surfaces was performed in a low frequency–long displacement reciprocating sliding wear tester under boundary lubrication and results compared to un-textured case. Tribological comparison of textured, textured and lapped, and untextured surfaces shows only minimal influence of texturing for contact conditions investigated.
Keywords:Laser surface texturing  Surface topography  Friction  Wear
本文献已被 ScienceDirect 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号