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Roughness analysis of electrochemically textured surfaces: effects on friction and wear of lubricated contacts
Surface Topography: Metrology and Properties ( IF 2.7 ) Pub Date : 2020-06-03 , DOI: 10.1088/2051-672x/ab96da
T A Rodrigues 1 , R V Arencibia 1 , H L Costa 2 , W M da Silva 1
Affiliation  

Maskless electrochemical texturing (MECT) is an inexpensive and fast technique with great potential to produce surface textures on metallic surfaces at industrial scale. This work used MECT to produce arrays of chevrons onto AISI 1045 steel surfaces. Block-on-ring tests using standard rings and textured blocks investigated the effects of full and partial texturing on friction and wear. Two normal loads (216.9N and 315.0N) were applied to investigate the effects of the textures under mixed and boundary lubrication regimes. Under the lower load, MECT increased friction and wear rates. This was attributed to the surface roughening of the areas outside the chevrons, which reduced the ratio between the average roughness of the asperities and the hydrodynamic film thickness ( λ ratios), shifting the lubricant regime from mixed to boundary lubrication. Partial texturing performed better than full texturing, but no clear trend was found for the position of the textured potion eith...

中文翻译:

电化学纹理化表面的粗糙度分析:对润滑触点的摩擦和磨损的影响

无掩模电化学纹理化(MECT)是一种廉价且快速的技术,具有在工业规模上在金属表面上产生表面纹理的巨大潜力。这项工作使用MECT在AISI 1045钢表面上生产人字形阵列。使用标准环和纹理块的环上块试验研究了全部和部分纹理化对摩擦和磨损的影响。施加了两个正常载荷(216.9N和315.0N)来研究混合和边界润滑条件下织构的影响。在较低的负载下,MECT增加了摩擦和磨损率。这归因于人字形外部区域的表面变粗糙,这减少了粗糙部分的平均粗糙度与流体动力膜厚度之间的比率(λ比),从而将润滑方式从混合润滑转变为边界润滑。
更新日期:2020-06-03
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