1. Predicting high temperature mechanical properties of CrN and CrAlN coatings from in-situ synchrotron radiation X-ray diffraction.
- Author
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Mohammadpour, Ehsan, Jiang, Zhong-Tao, Altarawneh, Mohmmednoor, Xie, Zonghan, Zhou, Zhi-feng, Mondinos, Nicholas, Kimpton, Justin, and Dlugogorski, Bogdan Z.
- Subjects
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NICKEL-chromium alloys , *HIGH temperature metallurgy , *MECHANICAL properties of metals , *METAL coating , *SYNCHROTRON radiation , *X-ray diffraction - 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 Cr 2 N 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). [ABSTRACT FROM AUTHOR]
- Published
- 2016
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