对一件院藏明洪武釉下彩宝座所用彩料的科技研究

Science and Technology Research into The Pigment of One Under-glazed Throne of Hongwu Period of The Ming Dynasty Collected in The Palace Museum

故宫博物院收藏有一件明代洪武时期的釉下彩花卉纹宝座,由于其彩绘纹饰呈色既像红又像褐,致使人们利用传统目鉴方法对其不能明确命名。本研究采用X射线荧光能谱仪(EDXRF)对该宝座所用彩料的化学成分进行了无损测试。通过与测试院藏两块洪武釉里红瓷片所用彩料的化学成分之结果的对比,我们认为,该宝座所用彩料为氧化铁(Fe2O3),故建议称之为釉下褐彩(釉里褐)为宜。

This thesis focuses on the pigment on one red-brown under-glazed throne of the Hongwu period of the Ming dynasty which is collected in the Palace Museum by comparing the chemical elements between this throne and the other two pieces of under-glazed red shards of the same age with Energy Dispersive X-ray Fluorescence (EDXRF) Spectrometer, drawing the conclusion that the pigment of the throne has turned out to be Fe2O3 which is nothing of the substance of the shards. It’s therefore suggested that the throne should be under-glazed brown.