Sharma, Jagdish P. (Professor of mechanical engineering)||Gupta, Abhijit
M.S. (Master of Science)
Department of Mechanical Engineering
Magnetic films; Thin films; Hard disks (Computer science)
The adhesion strength of sputtered thin carbon film as a protective layer on magnetic media is critical for data storage reliability. Its interaction with the surface of ceramic slider results in surface film failure and acoustic emission as a consequence of fretting, friction and wear. The sliding contact between these surfaces will continuously change the interfacial properties and subsequently affect the adhesion strength. The acoustic emission from the sliding surfaces will also change depending upon the changes brought to the interacting surface film and its effect on adhesion strength at any instant. An experimental method is described with a focus oh the changing pattern of acoustic signatures with friction and film failure under reciprocating contact. A correlation is found when the carbon film loses its adherence strength resulting in film failure. The related friction patterns and wear mechanisms are discussed.
Wang, Qian, "Friction, wear and acoustic signatures related to sputtered carbon thin magnetic media" (1989). Graduate Research Theses & Dissertations. 3198.
xi, 79 pages
Northern Illinois University
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