Enhanced Friction-Reducing Behavior of Stearic Acid Film on the Etched Copper

Wan, Yong; Cao, Lei; Yu, Yankun; Gao, Jinwei

doi:10.1007/s11249-016-0735-2

Cited by 3 publications

(1 citation statement)

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“…In fact, long chain fatty acid has been used as a model friction modifier lubricating base oil for a long time. Long chain fatty acids are well reported to be chemically adsorbed on aluminium, copper, and steel, which provides lower friction when such a layer was sliding against a solid counterface. According to the work of Bowden and Tabor, the fatty acid molecules are chemically adsorbed on the substrate surface and then transformed to a layer of fatty soaps by chemical reaction with the substrates during friction process.…”

Section: Discussionmentioning

confidence: 99%

Enhanced lubricity of zinc phosphate coating by stearic acid

Zhao

Cao

Wan

et al. 2018

Lubrication Science

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There is a need to reduce the friction and to prevent the galling between the galvanised steel and the shaping tools during the metal working process. Zinc phosphate (ZP) coatings are limitedly used as solid lubricant due to intrinsic high‐friction properties. This investigation explores the use of stearic acid overcoat on ZP coatings to produce surface coatings with low friction and high durability. A simple hydrothermal process was developed to fabricate ZP coatings on zinc. A stearic acid overcoat was then deposited on ZP coatings. Infrared microscopy and water contact angle measurements were used to analyse the chemical composition and the hydrophobicity of modified ZP coatings. The tribological behaviour of modified ZP coatings was evaluated by sliding against a steel ball by using a reciprocating ball‐on‐plate tribotester. Tribological results show that stearic acid overcoat on ZP coatings led to a decreased friction with greatly extended life.

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Section: Discussionmentioning

confidence: 99%