Journal of the Ceramic Society of Japan
Online ISSN : 1348-6535
Print ISSN : 1882-0743
ISSN-L : 1348-6535
Regular Issue: Note
A relationship between oxidation state of iron and color of Arita celadon glaze characterized by 57Fe-Mössbauer spectroscopy
Hiroaki KATSUKIAtsunori SHIRAISHIJae-Hwan PEEWoo-Seok CHOYusuke TAKAHASHIShiro KUBUKI
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2014 Volume 122 Issue 1426 Pages 520-522

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Abstract

The effect of firing atmosphere on the oxidation states of Fe in Arita celadon glaze and the glaze color was examined by using Mössbauer spectroscopy. The celadon glaze was prepared from feldspar, BaCO3, kaolin, α-quartz, and Fe2O3 powders and fired on the white porcelain biscuit plate at 1300°C for 0.5 h under several reduction atmospheres. The content of Fe2O3 in the glaze was 2 mass %. In oxygen atmosphere, the color of celadon glaze was gray-yellow due to Fe3+. The color of the celadon glaze changed from gray-yellow to blue-green with increase of CO concentration in the atmosphere. With the increase CO concentration, Fe2+ increased and the concentrations of Fe2+ were 85.9% at 0.5%CO and 95.6% at 1%CO, respectively. At 4% CO, iron state was only Fe2+.

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© 2014 The Ceramic Society of Japan
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