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RESEARCH PAPERS

Magnetic Head-Media Interface Temperatures: Part 1—Analysis

[+] Author and Article Information
B. Bhushan

IBM Almaden Research Center, San Jose, California 95120-6099

J. Tribol 109(2), 243-251 (Apr 01, 1987) (9 pages) doi:10.1115/1.3261346 History: Received February 01, 1986; Online October 29, 2009

Abstract

A “generalized” thermal analysis is described to estimate the flash temperature during sliding when both surfaces are of more or less equal roughness or one surface is substantially smoother than the other. High- and low-speed cases are considered. The basic model includes surface-topography statistics, frictional conditions, and mechanical and thermal parameters. Temperature history during the life of an individual asperity contact is calculated, from which average temperatures of an asperity contact are calculated. Thermal interaction of neighboring asperity contacts is considered. Then, an analysis is presented to show how individual asperity temperatures should be averaged. Temperature variations perpendicular to the sliding surfaces are also analyzed. Throughout the analysis, closed-form equations are developed, which can be conveniently used in the design of any sliding interface.

Copyright © 1987 by ASME
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