耀州窑月白釉的复仿制及呈色机理研究

以长石、石英、方解石和滑石为主要原料,采用三角配料法,确定了月白釉的基础釉组成.在此基础上,进一步研究了氧化铁和粘土含量对月白釉呈色的影响,并成功仿制出与古瓷釉色接近的月白釉.借助X射线衍射仪(XRD)、扫描电子显微镜(SEM)和X射线能谱仪(EDS)等对仿月白釉和古瓷釉的物相及微观结构进行了对比分析.结果表明:在Si/Ca的摩尔比为5.35~10.17的区域,可以得到乳浊度较高的青釉.随着釉中氧化铁含量的增加,釉色从青黄向青绿色调发展;而随着粘土含量的增加,釉色由绿色向黄色发展.仿月白釉和古瓷釉的微观结构相似,但仿月白釉中晶相含量低,气泡更加细小、均匀,更有利于月白釉的呈色.

Preparation and coloring mechanism analysis of pale green glaze

In this work ,feldspar ,quartz ,calcite and talc were used as raw materials to obtain the basic composition of the pale green glaze by the triangle batching method .Then ,the effects of the clay and iron oxide addition on the coloring of the fabricated glazes were inves-tigated and the similar products with ancient ceramics were fabricated .The phase composi-tion and microstructure of the imitation pale green glaze and the ancient glaze were discussed by the X ray diffraction （XRD ） and scanning electron microscopy/energy dispersive spec-trometry （SEM/EDS） .The results show that the green glaze with high opacity can be ob-tained when mole ratio of Si to Ca is in the region of 5 .35~10 .17 .The color of the imitation pale green glaze is developed from bluish yellow to bluish green with increase of iron oxide content ,and the glaze color is from green to yellow with increasing the clay content .The fab-ricated pale green glaze has a similar microstructure with the ancient ceramics .But the crys-talline phase content is less and the size of bubbles is smaller and dispersed more uniform than those in the ancient ceramics ,w hich are more favorable for the coloring of the pale green g laze .