Study of Formation of Iron Compounds and Color Tone on Bizen Stoneware

点击翻译按钮获取中文摘要

Formation phase and microstructure of brownish color pattern on Bizen stoneware heated in a noborigama(multi chambered climbing kiln) with red pine as a fuel was studied. The main crystalline phase in this pattern was found to be a spinel phase expressed as Mg(Al, Fe)_2O_4. Moreover, we found that the spinel phase was formed by a reaction between a Mg component supplied from red pine and Bizen clay. We succeeded in preparation of the brownish color pattern by painting a mixture of MgO, Fe_2O_3 and Al_2O_3 with a nominal composition of Mg : Al : Fe=1 : 2-x : x(x=0.50-1.50) on Bizen pellets, and then heating at 1250℃in air.