Steklo i Keramika (Glass and Ceramics). Monthly scientific, technical and industrial journal

 

ISSN 0131-9582 (Online)

  • Continuous numbering: 1069
  • Pages: 25-28
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Heading: Science for ceramic production

The luminescence spectra of samples of baked kaolin are investigated. It is shown that the obtained radiation corresponds to the luminescence of Cr 3+ ions in mullite. The effect of the firing temperature and the mass content of chromium oxide on the emission spectra has been studied. The experimental dependences were used to determine the activation energy of mullite formation E a = 144 6 kJ / mol and the limiting solubility of Cr 2 O 3 in mullite, equal to 0.33%
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Igo A. V., Kozhevin A. E. Trivalent chromium ions luminescence in mullite at kaolin firing. Steklo i keramika. 2017:90(1):25-28. (in Russ). UDK 666.3.015:666.3.017:535.37