Predicting high temperature mechanical properties of CrN and CrAlN coatings from in-situ synchrotron radiation X-ray diffraction

Mohammadpour, E., Jiang, Z-T, Altarawneh, M., Xie, Z., Zhou, Z.F., Mondinos, N., Kimpton, J. and Dlugogorski, B.Z. (2016) Predicting high temperature mechanical properties of CrN and CrAlN coatings from in-situ synchrotron radiation X-ray diffraction. Thin Solid Films, 599 . pp. 98-103.

Abstract

This contribution investigates the phase composition of CrN and CrAlN coatings by in-situ high temperature synchrotron radiation (SR-XRD), with the coatings deposited on steel substrate by closed field unbalance magnetron sputtering. Rietveld refinement on the SR-XRD spectra indicated CrN as the major phase, over the temperature range of 25 °C – 700 °C, for both coatings. At the high temperature of 700 °C, a Cr2N phase was observed in the CrN coating while the CrAlN coating also had a Cr phase. Williamson–Hall plots, from the refined data, afforded estimating variations of the strain and crystallite size of the major phase, up to 700 °C. The crystallite size (10 nm) for the CrAlN coating, at 25 °C, agrees very well with previous GI-XRD and TEM results obtained at room temperature Li et al. (2012).

Publication Type:	Journal Article
Murdoch Affiliation:	School of Engineering and Information Technology
Publisher:	Elsevier
Copyright:	Elsevier
Notes:	Available online 29 December 2015
URI:	http://researchrepository.murdoch.edu.au/id/eprint/29601

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