| Issue |
MATEC Web Conf.
Volume 96, 2017
III International Symposium “Fundamental Aspects of Rare-Earth Elements Exploration, Mining and Separation and Modern Materials Engineering” (REE-2016)
|
|
|---|---|---|
| Article Number | 00007 | |
| Number of page(s) | 4 | |
| DOI | https://doi.org/10.1051/matecconf/20179600007 | |
| Published online | 19 January 2017 | |
Self-propagating High Temperature Synthesis of Pink Corundum
1 Tomsk Scientific Centre SB RAS, Tomsk, Russian Federation
2 Tomsk State University, Tomsk, Russian Federation
* Corresponding author: cay@sibmail.com
Pigments based on pink corundum have been obtained by self-propagating high temperature synthesis in Cr2O3-Al2O3-Al system using a small amount of chromium oxide (up to 0.5 wt %) in the composition of the green mixture. Absorption bands of pink corundum in visible reflectance spectrum at λ=560 nm (17850 cm−1) and 400 nm (25000 cm−1) correspond to electron transitions 4А2g→4T2g(4F) and 4А2g→4T1g(4F). Increasing chrome oxide content to 5 wt.% in initial charge mixture leads to pigment darkening due to inclusions of Cr2O3. Synthesized pigments can be used as a component of glaze ceramic colors for porcelain.
© The Authors, published by EDP Sciences, 2017
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