Media type: E-Article Title: Effects of surface physicochemical properties on the tribological properties of liquid paraffin film in the nanoscale Contributor: Shen, Mingwu; Luo, Jianbin; Wen, Shizhu imprint: Wiley, 2001 Published in: Surface and Interface Analysis Language: English DOI: 10.1002/sia.1056 ISSN: 0142-2421; 1096-9918 Keywords: Materials Chemistry ; Surfaces, Coatings and Films ; Surfaces and Interfaces ; Condensed Matter Physics ; General Chemistry Origination: Footnote: Description: <jats:title>Abstract</jats:title><jats:p>Effects of different coatings on the tribological properties of very thin oil films in the nanoscale were investigated. The film thickness and friction force were measured by the technique of relative optical interference intensity (ROII) and a stress–strain force measuring system with high precision. The results indicate that the film thickness complies with the elastohydrodynamic theory in the high‐speed region but it differs from the theory in the low‐speed region. The physicochemical properties of coating surfaces have a great effect on the tribological properties of the oil film in the nanoscale. The coating with higher surface energy gives rise to a thicker film and a higher friction coefficient. The reasons for enhancement in the friction coefficient of the oil film in the nanoscale are discussed. Copyright © 2001 John Wiley & Sons, Ltd.</jats:p>