长沙窑乳浊釉——又一种唐代的分相釉

OPAQUE GLAZE OF THE CHANGSHA TONGGUAN WARE—ANOTHER TANG DYNASTY′S PHASE SEPARATED GLAZE

唐长沙铜官窑乳浊釉不含微米级的颗粒。暗场显微镜下发现其中含亚微米散射粒子。透射电镜和微区电子衍射确定了该乳浊釉的组成。显微图像仪求得了孤立小滴的粒度分布。化学分析了胎釉的组成。其组成与历代中国分相釉对比,具有分相釉的特征。

There are no micrograins in the Tang Changsha Tongguan opaque glaze. Scattering particles of submicro size have been observed in the glaze under dark-field microscope. It is confirmed by TEM and EDAX that the opaque glaze is a kind of typical Phase-separated glaze. The chemical compositions of two liquid phaseS in the glaze were de-termined by EDAX. Particle size distribution of isolated droplets was measured by micro-image analyser. The chemical compositions of the glaze and body were analysed quantitatively. According to the measured data and by comparison with the phase-sepa-rated glazes in the respective Chinese literatures, it is known that the opaque glaze possesses common chemical characteristics as those in other phase-separated glazes.