The Annealing of Corundum (Ruby) in Nitrogen (N2) Air

Year 2018, Volume: 5 Issue: 3, 875 - 881, 30.09.2018

Veli Uz , Bektaş Uz Ali İssi , Nihal Derin Coşkun , Taşkın Deniz Yıldız

https://doi.org/10.31202/ecjse.436515

Cited By: 1

Abstract

Every
ruby produced in the world is in different qualities with its unique
characteristics. The development of ruby’s color is effective in annealing in
different atmospheres. In our work, crystal parameters, spectroscopic
properties and color changes were determined by heat-treating the newly
discovered ruby in the nitrogen atmosphere in Turkey. The annealing result in
the nitrogen atmosphere was: a-axis 0.17% and c-axis 0.25%, for R-3c: R-3c: R
a-axis 7.06%, alpha angle 5.19% and a- 0.99, c-axis increased by 0.94%. After
annealing, a large absorption peak was observed at a wavelength of 500 nm in
the UV-Vis spectrometer. The red color of the ruby was white-light-pink after
annealing. Heat treatment in the nitrogen environment caused a change in the
color of the ruby.

Keywords

Ruby, Annealing, Nitrogen air, Crystal parameters

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