元代钧瓷釉的穆斯堡尔谱分析

Mossbauer analysis of Yuan dynasty Jun porcelain glaze

本文详细研究了元代钧瓷釉和仿古蓝钧釉的穆斯堡尔参数(结构铁的同质异能移、四极分裂)与烧制温度的关系,并将元代钧釉和仿古蓝钧釉的结构铁的同质异能移、四极分裂作了详细比较。从而确定元代钧窑的烧成温度在1250℃以上,烧制气氛为中等还原气氛,元代钧釉中的结构铁(Fe^(2+)和Fe^(3+))的配位数可能为4。仿古蓝钧釉料具有宽阔的脱羟基和玻璃化过程.这对形成钧瓷的独特釉色是有益的。烧制温度高于1200℃时,仿古蓝钧釉的配位数与元代钧瓷釉相同。仿古蓝钧釉的材料基本上是合适的,但与元钧釉料还略有差别。

The firing temperature dependence has been studied of the quadrupole splitting (QS)and isomeric shift (IS) for the structure iron in Yuan dynasty Jun porcelain glaze and simulated ancient blue Jun glaze by Mossbauer spectroscopy. The QS and IS for the two kinds of glaze were compared. Firing temperature for the former was determined to be above 1250℃, and coordination number for Fe2+ and Fe3+ was four. The latter has been found will a broad process of dehydroxylation and vitrification, which may be profitable to form the unique glaze colour of Jun porcelain. When firing temperature is above 1200℃, coordination number for the latter becomes 4 too.