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).
Original language | English |
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Pages (from-to) | 98-103 |
Number of pages | 6 |
Journal | Thin Solid Films |
Volume | 599 |
DOIs | |
Publication status | Published - Jan 29 2016 |
Externally published | Yes |
Keywords
- GSASII
- Hard coatings
- High temperature X-ray diffraction
- Rietveld refinement
- Strain
- Synchrotron radiation
- Williamson-Hall
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Surfaces and Interfaces
- Surfaces, Coatings and Films
- Metals and Alloys
- Materials Chemistry