Murdoch University Research Repository

Welcome to the Murdoch University Research Repository

The Murdoch University Research Repository is an open access digital collection of research
created by Murdoch University staff, researchers and postgraduate students.

Learn more

High temperature in-situ phase stability of sputtered TiAlxN coatings

Patel, S.B., Mohammadpour, E., Mondinos, N., Zhao, X., Veder, J-P, Zhou, Z., Moh, T.S.Y., Hsien Liew, W.Y., Lee, S. and Jiang, Z-T (2019) High temperature in-situ phase stability of sputtered TiAlxN coatings. Journal of Alloys and Compounds, 786 . pp. 507-514.

PDF - Authors' Version
Download (1MB) | Preview
Link to Published Version:
*Subscription may be required


The temperature dependence of phase composition and lattice parameters, for TiAlxN thin film coating, are experimentally investigated by in-situ synchrotron radiation X-ray diffraction (SR-XRD), at temperatures between 25 °C and 700 °C. Mechanical properties, such as: Young's modulus (E), hardness (H) and plastic deformation index (PDI) – were experimentally determined by nanoindentation, at 25 °C. Crystalline structural analysis, of SR-XRD results, indicates the major phases are TiN and AlN; with Ti2O and TiO2 phases also present above 600 °C. The lattice constants increased with an increase in temperature. Atomic and phase compositions, at 25 °C, were also verified by X-ray photoelectron spectroscopy (XPS). Field emission scanning electron microscopy (FESEM) images display an increase in surface roughness and reduction in grain size, with increasing Aluminium percentage (Al%). Nanoindentation analysis showed a maximum hardness of 25.1 ± 1.5 GPa (sample containing 12% Al), which was subsequently reduced upon addition of more Aluminium. Finite element modelling (FEM), including von Mises stress distribution, indicates lower mechanical integrity, for samples with high Al% content.

Item Type: Journal Article
Murdoch Affiliation(s): School of Engineering and Information Technology
Publisher: Elsevier
Copyright: © 2019 Published by Elsevier B.V.
Item Control Page Item Control Page


Downloads per month over past year