What question did this study set out to answer?

To determine the shear strength of boundary lubricants and quantify surface energy and film coverage on molecularly smooth mica substrates.

August 1, 1961Journal of Applied Physics

Friction and Adhesion of Clean and Contaminated Mica Surfaces

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Authors

ABA.I. BaileyImperial College London

Discussion

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Implication

Experimental study reveals frictional shear strength and surface energy mechanisms in lubricated mica, highlighting interfacial adsorption and incomplete monolayer coverage.

Key Points

To determine the shear strength of boundary lubricants and quantify surface energy and film coverage on molecularly smooth mica substrates.
Applied normal and tangential loads to mica sheets coated with monomolecular lubricant films using a custom apparatus.
Determined surface energy in air by measuring the force required to propagate and cycle cleavage cracks.
Characterized the structure and coverage of monolayers deposited from nonpolar solutions using electron microscopy.
Lubricant shear strength combined with elastic hysteresis losses accounts for why friction and pickup are not reduced proportionately.
Energy variations observed during crack opening and closing cycles are driven by the adsorption and migration of atmospheric air or water vapor films.
Monolayers deposited by retraction from nonpolar solutions cover only approximately one-third of the total surface area due to the incorporation and subsequent evaporation of solvent molecules.

Cite This Study

A.I. Bailey (1961) studied this question.

synapsesocial.com/papers/6a6dacf32163a0a01bc2efd4 https://doi.org/10.1063/1.1728370

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August 1, 1961Journal of Applied Physics

Friction and Adhesion of Clean and Contaminated Mica Surfaces

View Full Paper

Ask AI

Bookmark

Authors

ABA.I. BaileyImperial College London

Discussion

Member takes

Implication

Experimental study reveals frictional shear strength and surface energy mechanisms in lubricated mica, highlighting interfacial adsorption and incomplete monolayer coverage.

Key Points

To determine the shear strength of boundary lubricants and quantify surface energy and film coverage on molecularly smooth mica substrates.
Applied normal and tangential loads to mica sheets coated with monomolecular lubricant films using a custom apparatus.
Determined surface energy in air by measuring the force required to propagate and cycle cleavage cracks.
Characterized the structure and coverage of monolayers deposited from nonpolar solutions using electron microscopy.
Lubricant shear strength combined with elastic hysteresis losses accounts for why friction and pickup are not reduced proportionately.
Energy variations observed during crack opening and closing cycles are driven by the adsorption and migration of atmospheric air or water vapor films.
Monolayers deposited by retraction from nonpolar solutions cover only approximately one-third of the total surface area due to the incorporation and subsequent evaporation of solvent molecules.

Cite This Study

A.I. Bailey (1961) studied this question.

synapsesocial.com/papers/6a6dacf32163a0a01bc2efd4 https://doi.org/10.1063/1.1728370

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