by J. L. Endrino, C. Århammar, A. Gutiérrez, R. Gago, D. Horwat, L. Soriano, G. Fox-Rabinovich, D. Martín y Marero, J. Guo, J. -E. Rubensson and J. Andersson
Abstract:
Thermal treatment of supersaturated Ti1−xAlxN films (x≈0.67) with a dominant ternary cubic-phase were performed in the 700–1000°C range. Grazing incidence X-ray diffraction (GIXRD) shows that, for annealing temperatures up to 800°C, the film structure undergoes the formation of coherent cubic AlN (c-AlN) and TiN (c-TiN) nanocrystallites via spinodal decomposition and, at higher temperatures (⩾900°C), GIXRD shows that the c-AlN phase transforms into the thermodynamically more stable hexagonal AlN (h-AlN). X-ray absorption near-edge structure (XANES) at the Ti K-edge is consistent with spinodal decomposition taking place at 800°C, while Al K-edge and N K-edge XANES and X-ray emission data show the nucleation of the h-AlN phase at temperatures textgreater800°C, in agreement with the two-step decomposition process for rock-salt structured TiAlN, which was also supported by X-ray diffraction patterns and first-principle calculations. Further, the resonant inelastic X-ray scattering technique near the N K-edge revealed that N2 is formed as a consequence of the phase transformation process.
Reference:
J. L. Endrino, C. Århammar, A. Gutiérrez, R. Gago, D. Horwat, L. Soriano, G. Fox-Rabinovich, D. Martín y Marero, J. Guo, J. -E. Rubensson and J. Andersson, “Spectral evidence of spinodal decomposition, phase transformation and molecular nitrogen formation in supersaturated TiAlN films upon annealing”, Acta Materialia, vol. 59, no. 16, pp. 6287–6296.
Bibtex Entry:
@article{endrino_spectral_2011,
title = {Spectral evidence of spinodal decomposition, phase transformation and molecular nitrogen formation in supersaturated {TiAlN} films upon annealing},
volume = {59},
issn = {1359-6454},
url = {http://www.sciencedirect.com/science/article/pii/S1359645411004538},
doi = {10.1016/j.actamat.2011.06.039},
abstract = {Thermal treatment of supersaturated Ti1−xAlxN films (x≈0.67) with a dominant ternary cubic-phase were performed in the 700–1000°C range. Grazing incidence X-ray diffraction (GIXRD) shows that, for annealing temperatures up to 800°C, the film structure undergoes the formation of coherent cubic AlN (c-AlN) and TiN (c-TiN) nanocrystallites via spinodal decomposition and, at higher temperatures (⩾900°C), GIXRD shows that the c-AlN phase transforms into the thermodynamically more stable hexagonal AlN (h-AlN). X-ray absorption near-edge structure (XANES) at the Ti K-edge is consistent with spinodal decomposition taking place at 800°C, while Al K-edge and N K-edge XANES and X-ray emission data show the nucleation of the h-AlN phase at temperatures {textgreater}800°C, in agreement with the two-step decomposition process for rock-salt structured TiAlN, which was also supported by X-ray diffraction patterns and first-principle calculations. Further, the resonant inelastic X-ray scattering technique near the N K-edge revealed that N2 is formed as a consequence of the phase transformation process.},
number = {16},
urldate = {2017-10-09},
journal = {Acta Materialia},
author = {Endrino, J. L. and Århammar, C. and Gutiérrez, A. and Gago, R. and Horwat, D. and Soriano, L. and Fox-Rabinovich, G. and Martín y Marero, D. and Guo, J. and Rubensson, J. -E. and Andersson, J.},
month = sep,
year = {2011},
keywords = {Nanocrystalline materials, Resonant inelastic X-ray scattering, TiAlN, X-ray absorption near-edge structure},
pages = {6287--6296},
file = {ScienceDirect Full Text PDF:E:\cmam_papers\files\1080\Endrino et al. - 2011 - Spectral evidence of spinodal decomposition, phase.pdf:application/pdf;ScienceDirect Full Text PDF:E:\Usuarios\Administrator\Zotero\storage\9Y9M738U\Endrino et al. - 2011 - Spectral evidence of spinodal decomposition, phase.pdf:application/pdf;ScienceDirect Snapshot:E:\cmam_papers\files\1075\S1359645411004538.html:text/html;ScienceDirect Snapshot:E:\Usuarios\Administrator\Zotero\storage\Z75PMJJZ\S1359645411004538.html:text/html},
}