NDLI: Tribochemical wear on amorphous carbon thin films

Content Provider	IEEE Xplore Digital Library
Author	Marchon, B. Khan, M.R. Heiman, N. Pereira, P. Lautie, A.
Copyright Year	1965
Abstract	Some physico-chemical processes taking place at a sliding CaTiO/sub 3/-ceramic/unlubed carbon-film interface of a rigid disk drive are described. A major cause of frictional buildup is the tribochemical wear of the carbon surface atoms in the oxygen-containing atmosphere. Based on indirect evidence, a mechanism involving oxygen chemisorption on surface dangling bonds and CO/CO/sub 2/ desorption under the sliding motion of the read/write head is proposed. Raman data providing evidence of the formation of a graphite transfer film at the interface of some carbon films are shown. Catalytic activity of the slider ceramic towards oxidation is also demonstrated. Methods for slowing down the frictional-buildup process are discussed. They include heavier texture, carbons with higher sp/sup 3//sp/sup 2/ ratio, active sites blocking, and application of topical lubricant.<>
Sponsorship	IEEE Magnetics Society
Starting Page	2670
Ending Page	2675
Page Count	6
File Size	733316
File Format	PDF
ISSN	00189464
Volume Number	26
Issue Number	5
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1990-09-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Amorphous materials Transistors Calcium Friction Performance evaluation Drives Oxidation Titanium compounds Testing Spectroscopy
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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