著者

草野 圭弘 福原 実

出版者

日本結晶学会

雑誌

日本結晶学会誌 (ISSN:03694585)

巻号頁・発行日

vol.56, no.3, pp.179-185, 2014-06-30 (Released:2014-07-09)

参考文献数

25

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Bizen stoneware, with the characteristic reddish hidasuki or “fire-marked” pattern, is one of Japan's best known traditional ceramic works of art. We investigated the microstructure and color-formation process in Bizen stoneware, and discovered that the hidasuki pattern resulted from the precipitation of corundum (α-Al2O3) and the subsequent epitaxial growth of hematite (α-Fe2O3) around it in a ~50 µm-thick liquid specifically formed in the ceramic surface. The epitaxial composites include hexagonal plate-like α-Fe2O3/α-Al2O3/α-Fe2O3 sandwiched particles. At low oxygen partial pressures, α-Fe coated graphite, Fe3P and ε-Fe2O3 were also formed to appear.