Effect of surface hydrophilicity and water vapor pressure on the interfacial shear strength of adsorbed water layer

Doo-In Kim; Hyo-Sok Ahn; Dong-Hoon Choi
March 2004
Applied Physics Letters;3/15/2004, Vol. 84 Issue 11, p1919
Academic Journal
We investigated the effect of water vapor pressure and surface hydrophilicity on the tribological behavior in wearless sliding condition. Friction and interfacial shear strength of silicon surfaces with different water affinity (contact angles of <5°, 30°, and 85°) against a glass sphere (contact angle 40°) were examined under various water vapor pressure conditions. The friction of hydrophilic surface decreased as vapor pressure increased and the least hydrophilic surface showed stable and low friction force regardless of relative vapor pressure. However, it showed that the hydrophilic surface with high relative vapor pressure exhibited lower shear strength than a less hydrophilic surface independent of capillary effect. It was explained in terms of capillary wetting and the role of adsorbed water in contact area. © 2004 American Institute of Physics.


Related Articles

  • Study on Dry Deposition of SO2-NOX onto Loess. Sorimachi, A.; Sakai, M.; Ishitani, O.; Nishikawa, M.; Sakamoto, K. // Water, Air & Soil Pollution;Aug2001, Vol. 130 Issue 1-4, p541 

    In order to obtain information on dry deposition of SO2 onto loess in China, the effects of water vapor and NO2 on SO2 deposition-oxidation processes were investigated in laboratory measurements. The deposition velocities of SO2 onto loess particles were 2.34–7.33 cm s-1, were high in...

  • The isotopic composition of water vapour and precipitation in Ivittuut, Southern Greenland. Bonne, J.-L.; Masson-Delmotte, V.; Cattani, O.; Delmotte, M.; Risi, C.; Sodemann, H.; Steen-Larsen, H. C. // Atmospheric Chemistry & Physics Discussions;2013, Vol. 13 Issue 11, p30521 

    Since September 2011, a Wavelength-Scanned Cavity Ringdown Spectroscopy analyzer has been remotely operated in Ivittuut, southern Greenland, providing the first continuous record of surface water vapour isotopic composition (δ18O, δD) in South Greenland and the first record including the...

  • Evolution of microstructural characteristics of different cement materials caused by carbonation. Son Tung Pham; Prince, William // Applied Mechanics & Materials;2014, Issue 556-562, p628 

    The objective of this work was to examine the influence of carbonation on the microstructure of cement materials. Different materials, which were CEM I mortar and paste, CEM II mortar and paste, were carbonated at 20°C, 65% relative humidity and 20% of CO2 concentration. The specific surface...

  • Oxidation behavior and mechanical properties of low-oxygen SiC fibers prepared by vacuum heat-treatment of electron-beam-cured poly(carbosilane) precursor. Shimoo, T.; Okamura, K.; Mutoh, W. // Journal of Materials Science;Apr2003, Vol. 38 Issue 8, p1653 

    EB-cured PCS fibers were heat-treated at 1273–1673 K under a reduced pressure of 1.33 Pa, and subsequently they were exposed to 1773 K in air. The thermal stability and oxidation resistance of the fibers were investigated through TG, XRD analysis, specific resistivity measurement, SEM...

  • On the quality of the Nimbus 7 LIMS Version 6 water vapor profiles and distributions. Remsberg, E. E.; Natarajan, M.; Lingenfelser, G. S.; Thompson, R. E.; Marshall, B. T.; Gordley, L. L. // Atmospheric Chemistry & Physics Discussions;2009, Vol. 9 Issue 5, p17903 

    This report describes the quality of the Nimbus 7 Limb Infrared Monitor of the Stratosphere (LIMS) water vapor (H2O) profiles of 1978/1979 that were processed with a Version 6 (V6) algorithm and archived in 2002. The V6 profiles incorporate a better knowledge of the instrument attitude for the...

  • Line-shape study of water vapour by tunable diode laser spectrometer in the 822-832 nm wavelength region. Ray, A.; Bandyopadhyay, A.; Ray, B.; Biswas, D.; Ghosh, P.N. // Applied Physics B: Lasers & Optics;Nov2004, Vol. 79 Issue 7, p915 

    A near-infrared tunable diode laser absorption spectrometer is set up to measure the air-induced broadening coefficients and the line-strength parameters of water-vapour overtone transitions within the (2,1,1)?(0,0,0) band in the 822-832 nm wavelength region. A Hitachi HL8311 E double...

  • Testing Mixed-Phase Cloud Water Vapor Parameterizations with SHEBA/FIRE–ACE Observations. Qiang Fu; Hollars, Shawn // Journal of the Atmospheric Sciences;8/15/2004, Vol. 61 Issue 16, p2083 

    The parameterization of in-cloud water vapor pressure below 0°C is examined using in situ aircraft observations from Canadian National Research Council (NRC) Convair-580 flights during the Surface Heat Budget of the Arctic Ocean (SHEBA)/First International Satellite Cloud Climatology Project...

  • Hydrothermal Synthesis of Loessial Mesoporous Materials. Lu, L.; Jing, Z.; Wang, Z.; Pan, X.; Ishida, E. H. // AIP Conference Proceedings;11/25/2010, Vol. 1251 Issue 1, p308 

    In order to sustain the inherent porous properties of loess, hydrothermal synthesis of mesoporous materials from loess was carried out under saturated steam pressure at 100-200 °C for up to 24h. The experimental results showed that the curing temperature and time exerted a positive influence...

  • Environmental Control Strategy Design of Modern Pheasantry. Anmin Wang; Kai Huang; Jianxin Zhu // Applied Mechanics & Materials;2014, Issue 563, p291 

    The quality of the pheasantry environmental seriously affect the health of chicken production, and appropriate environmental control strategy is the core of a modern pheasantry environmental control, directly affect the productivity and quality of the flock. for the thesis put forward a series...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics