Mechanical properties of pure carbon and carbon-nitrogen coatings on thin film head sliders

G. Wang, A. Strojny, J. M. Sivertsen, J. H. Judy, W. W. Gerberich

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

The mechanical properties of pure carbon (C) and carbon-nitrogen (C:N) coatings on thin film head sliders were investigated by continuous drag testing (CDT) and nano-indentation. Comparisons were made in terms of wear protection, elastic modulus and hardness of these two types of carbon films. The C and C:N thin films with various thickness were deposited on thin film head sliders using a facing target sputtering (FTS) system. After 23,000 revolutions of CDT tests, all the testing head sliders which were uncoated and coated with 90 angstrom C or C:N exhibited some degree of wear damage as indicated in AFM micrographs where that of the uncoated head was the most severe and that of the C:N coated head was the least. Head sliders coated with 1000 angstrom C and C:N were studied under the Triboscope nano-indenter, where load-displacement curves at different maximum loads were recorded. Elastic modulus and hardness were determined from those curves. The results show that elastic modulus and hardness of C:N are greater than that of C. Therefore, one may conclude that both C and C:N behave like a protective coating for the head slider where C:N is better than C, which could be well related to the larger elastic modulus and hardness of C:N.

Original languageEnglish (US)
Title of host publicationThin Films
Subtitle of host publicationStresses and Mechanical Properties VI
DOIs
StatePublished - 1996
EventProceedings of the 1996 MRS Spring Meeting - San Francisco, CA, USA
Duration: Apr 8 1996Apr 11 1996

Publication series

NameMaterials Research Society Symposium - Proceedings
Volume436
ISSN (Print)0272-9172

Other

OtherProceedings of the 1996 MRS Spring Meeting
CitySan Francisco, CA, USA
Period4/8/964/11/96

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