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Effect of absorbed water on the adhesion, friction, and wear of phosphate laser glass at nanoscale
Author(s) -
Wang Yongrui,
He Hongtu,
Yu Jiaxin,
Zhang Yafeng,
Hu Hailong
Publication year - 2017
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.15034
Subject(s) - materials science , composite material , adhesion , rubbing , particle (ecology) , flat glass , soda lime glass , geology , oceanography
The interaction between glass and micro‐particle in the presence of absorbed water could affect glass surface integrity, especially for the phosphate glass with a poor water resistance. In this work, using an atomic force microscope equipped with an environment chamber, the adhesion, friction and wear behaviors of phosphate laser ( PL ) glass were investigated by contacting with an SiO 2 microsphere under vacuum, dry air, and humid air, respectively, to reveal the effect of the absorbed water on the interactions between glass and particle. Compared to vacuum and dry air, a higher adhesion force and friction coefficient as well as more material removal of PL glass were found in humid air. The capillary force caused by absorbed water greatly contributes to the high adhesion and friction in humid air. Moreover, the water meniscus forming at glass‐particle interface provides an environment for hydrolyzing P–O–P network and assists the material removal of PL glass under shear stress. Comparing the results after rubbing the SiO 2 particle to those rubbed by the CeO 2 particle in our previous work, in humid air, a higher shear stress and material removal rate were found in PL glass‐CeO 2 pair than in the PL glass‐SiO 2 pair, indicating that in the presence of absorbed water, countersurface chemistry also plays an important role in the friction and wear of PL glass at the nanoscale surface.