MATEC Web Conf.
Volume 96, 2017III International Symposium “Fundamental Aspects of Rare-Earth Elements Exploration, Mining and Separation and Modern Materials Engineering” (REE-2016)
|Number of page(s)||4|
|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: email@example.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
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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