Tribological investigations of metallic layers of flexible substrates

Author

Harth, K. ; Hibs, H. ; Mannsperger, H. ; Schildberg, H.P. ; Werner, A.

Author_Institution

BASF AG, Ludwigshafen, West Germany

Volume

26

Issue

1

fYear

1990

fDate

1/1/1990 12:00:00 AM

Firstpage

156

Lastpage

158

Abstract

The tribological behavior of unprotected thin metallic layers on flexible substrates was studied in sliding contact with magnetic heads. Microscopic investigations of the wear mechanism give evidence that microploughing of the metallic layer with plastic deformation of the substrate takes place during the first passes of the magnetic head. Subsequent surface fatigue of the layer system initiates debris, which causes a drastic increase of the coefficient of friction and a sudden decrease of the readout signal. Key parameters for improving the lifetime are the reduction of defects and the evolution of reliable lubricating top coatings

Keywords

fatigue; magnetic heads; magnetic thin films; mechanical contact; metallic thin films; wear; debris; defect reduction; flexible substrates; friction coefficient; lifetime; magnetic heads; metallic layers; microploughing; microscopic investigation; plastic deformation; readout signal; reliable lubricating top coatings; sliding contact; surface fatigue; tribological behavior; wear mechanism; Amorphous materials; Force measurement; Friction; Magnetic films; Magnetic heads; Optical microscopy; Protection; Sputtering; Strain measurement; Substrates;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.50521

Filename

50521