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Nano Indentations Studies of WC/C and TiN/(Ti,Al)N Multilayer PVD Coatings Combined with Cross-sectional Electron Microscopy Observations

Published online by Cambridge University Press:  17 March 2011

N.J.M. Carvalho  and
J.Th.M. De Hosson
N.J.M. Carvalho
Affiliation:
Department of Applied Physics, Materials Science Center and Netherlands Institute of Metals Research, University of Groningen Nijenborgh 4, 9747 AG Groningen, The Netherlands
J.Th.M. De Hosson
Affiliation:
Department of Applied Physics, Materials Science Center and Netherlands Institute of Metals Research, University of Groningen Nijenborgh 4, 9747 AG Groningen, The Netherlands
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Abstract

Multilayers of tungsten carbide/carbon (WC/C) with an amorphous structure and multilayers of titanium nitride/titanium-aluminum nitride (TiN/(Ti,Al)N) with a polycrystalline structure, prepared by physical vapor deposition, have been subjected to nanoindentation testing. The investigation has been aimed at establishing whether the load-displacement responses provides accurate information on the fracture mechanisms and whether such mechanisms can be characterized using a new technique for cross-sectional electron microscopy of the nanoindentations. Analysis of the load-displacement curves showed that they can be used to identify the cracking mechanisms occurring in the multilayers and that cross-sectioning of the nanoindentations is necessary if a more complete understanding of the multilayer coatings behavior is required.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 697: Symposium P – Surface Engineering 2001--Fundamentals and Applications , January 2001 , P1.5
Copyright
Copyright © Materials Research Society 2002

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