備前焼模様の微構造と形成過程

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タイトル別名
  • Microstructure and Formation Process of Characteristic Patterns on Bizen Stoneware
  • 産業界で活躍する結晶学(3)備前焼模様の微構造と形成過程
  • サンギョウカイ デ カツヤク スル ケッショウガク(3)ビゼンヤキ モヨウ ノ ビコウゾウ ト ケイセイ カテイ

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抄録

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.

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