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http://dx.doi.org/10.5762/KAIS.2010.11.4.1186

Color Enhancement for Cubic Zirconia with Low Temperature Annealing  

Li, Feng (Dept of Materials Science and Engineering, University of Seoul)
Shen, Yun (Dept of Materials Science and Engineering, University of Seoul)
Song, Oh-Sung (Dept of Materials Science and Engineering, University of Seoul)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.11, no.4, 2010 , pp. 1186-1191 More about this Journal
Abstract
Colored cubic zirconia specimen made by skull melt process were annealed in vacuum at the temperature of $1200^{\circ}C{\sim}1400^{\circ}C$ for 10~60 minutes to enhance the color. All the seven specimen become darker and eventually be black as annealing temperature and time increase. The black samples turned into original colors when we elevated the temperature with oxy-acetylene torch for around 10 minutes in the air. Finally, we could tune the colors of cubic zirconia either anneal in vacuum or the black samples in the air to obtain the proposed colors. Our proposed new process may be appropriate to fabricate the precious synthetic colored cubic zirconia to simulate the natural colored gem quality diamonds.
Keywords
Cubic Zirconia; Color Enhancement; Annealing;
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