...Arohi Mathur; Satnam Singh; Akanksha Mathur Purpose Surface hardness and wear resistance of steel components are critical for ensuring reliable performance and extended service life. The purpose of this study is to enhance the surface hardness and tribological performance of low-carbon steel...

... analyzing the influence of different CoCrFeNi contents on the microstructure, hardness, friction coefficient and wear rate of the materials, it seeks to optimize their application performance in high-speed train braking, addressing the issues of large fluctuation in friction coefficient and severe high...

...; – = corresponding non-dimensional parameter; r = recess; J = journal; and b = bearing. Performance Bearings Mathematical model Hydrostatics c = radial clearance, mm; e = eccentricity, mm; h = fluid film thickness...

.... Design/methodology/approach The nano-oil was prepared by dispersing an optimal composition of 0.5 vol. per cent of 70 nm hBN in SAE 15W-40 diesel engine oil using a sonication technique. The tribological testing was performed using a four-ball tribometer according to the ASTM standard. Findings...

... of the punching process. As the punching cycle progresses, local defects in TiN coating are observed, i.e. coating is locally worn away. © MCB UP Limited 2003 Performance Wear Punching is widely used in the industry due to its ease of operation and low operational cost. The quality of punched...

... the increasing demands of the MW fluids market, additive suppliers have to provide increasing amounts of information regarding the performance and environmental impact of their additives. © MCB UP Limited 2003 Metalworking fluids Performance Environmental impact The world market...

...David Harvey Discusses developments in coatings using high velocity oxyfuel (HVOF). Covers the basic process, comparisons with other thermal spraying processes and optimization of performance. Discusses industrial applications and new developments in the technology. Features The tough truth...

...Max Gairing Details the performance requirements of modern automotive engines and the role played by additives in fuels and in engine and transmission lubricants. Outlines problem areas needing attention. © Company 1995 ACEA Additives Engines Fuels Oils Performance FEATURES...