Characterization Of Nano-composite PVD
Coatings For Wear-resistant Applications
Author(s)
D. Galvan, Y. T. Pei & J. Th. M. De Hosson
Abstract
Various methodologies for the characterization of nano-composite coatings are
discussed, which consist TiC nano-particles distributed in an amorphous
hydrocarbon (a-C:H) matrix. Complications that arise from the influence of
coating roughness and underlying substrate on the properties are evaluated and
suitable solutions are proposed. Experimental techniques such as nanoindentation,
EPMA, XPS, XRD and (cross-sectional) SEM and TEM are used
for a detailed characterization of 1-2 µm thick nano-composite coatings. The
nano-structure and columnar morphology of two coatings of different Ti content
has been characterized. The deformation and failure behavior of the two coatings
is characterized with the combined use of nano-indentations, TEM and FIB
techniques. A lower Ti content results in smaller TiC particle size, restrained
columnar growth and an improved elastic recovery.
Keywords: nano-composite coating; characterization, TEM, XRD, XPS.
1 Introduction
Nano-composite coatings based on an amorphous hydrocarbon (a-C:H) matrix
are promising material systems for low friction and wear resistant applications.
A detailed characterization of its structure permits to understand the deformation
behavior and how this depends on the different microstructures that can be
achieved. The interest in developing a structure-property relationship for this
material system stems from the promising properties in the field of tribological
coatings for automotive applications [1]. The characterization of nano-composite
materials in the form of 1-2 µm thick films is complicated due to the influence of
Keywords
nano-composite coating; characterization, TEM, XRD, XPS.
Related Book
Other papers in this volume
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