Thermo-penetrative spreading behaviours of oil in lasered microgrooves on stainless steel 316L surfaces

IF 1.8 4区 工程技术 Q3 ENGINEERING, CHEMICAL
Rong Wang, Shaoxian Bai
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引用次数: 0

Abstract

The thermo-penetrative spreading behaviours of oil in microgrooves on stainless steel 316L surfaces were studied experimentally under temperature gradient conditions. An interface of smooth surface and microgrooved surface was designed to comparatively investigate the penetrative spreading of oil in microgrooves and the apparent spreading of oil on microgrooves and smooth surfaces. Then, microgrooves with different depths but a same width were laser processed to analyse the relationship between the actions of surface texture and temperature gradient on oil directional spreading. Results showed that the apparent oil on microgrooves extended directionally along the temperature gradient, leading to the lubricant loss from the high-temperature region to the lower, while the penetrative oil in microgrooves could spread rapidly from the low-temperature region to the higher under the obstruction of the thermocapillary effect, providing a potential method to enhance the lubrication.

不锈钢316L表面激光微槽中油的热渗透扩散行为
在温度梯度条件下,对316L不锈钢表面微槽中油的热穿透扩散行为进行了实验研究。设计了光滑表面和微槽表面的界面,以比较研究油在微槽中的渗透扩散和油在微凹槽和光滑表面上的表观扩散。然后,对不同深度但相同宽度的微槽进行激光加工,分析表面纹理和温度梯度对油定向铺展的影响。结果表明,微槽上的表观油沿温度梯度方向延伸,导致润滑油从高温区向低温区损失,而微槽中的渗透油在热毛细效应的阻碍下可以从低温区迅速向高温区扩散,提供了增强润滑的潜在方法。
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来源期刊
Lubrication Science
Lubrication Science ENGINEERING, CHEMICAL-ENGINEERING, MECHANICAL
CiteScore
3.60
自引率
10.50%
发文量
61
审稿时长
6.8 months
期刊介绍: Lubrication Science is devoted to high-quality research which notably advances fundamental and applied aspects of the science and technology related to lubrication. It publishes research articles, short communications and reviews which demonstrate novelty and cutting edge science in the field, aiming to become a key specialised venue for communicating advances in lubrication research and development. Lubrication is a diverse discipline ranging from lubrication concepts in industrial and automotive engineering, solid-state and gas lubrication, micro & nanolubrication phenomena, to lubrication in biological systems. To investigate these areas the scope of the journal encourages fundamental and application-based studies on: Synthesis, chemistry and the broader development of high-performing and environmentally adapted lubricants and additives. State of the art analytical tools and characterisation of lubricants, lubricated surfaces and interfaces. Solid lubricants, self-lubricating coatings and composites, lubricating nanoparticles. Gas lubrication. Extreme-conditions lubrication. Green-lubrication technology and lubricants. Tribochemistry and tribocorrosion of environment- and lubricant-interface interactions. Modelling of lubrication mechanisms and interface phenomena on different scales: from atomic and molecular to mezzo and structural. Modelling hydrodynamic and thin film lubrication. All lubrication related aspects of nanotribology. Surface-lubricant interface interactions and phenomena: wetting, adhesion and adsorption. Bio-lubrication, bio-lubricants and lubricated biological systems. Other novel and cutting-edge aspects of lubrication in all lubrication regimes.
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