HUANG Ruifu CHEN Xianqiu CHEN Shiping GUO Rongfa
(Shanghai Institute ofCeramies, Chinese Academy of Sciences)
Abstract: By means ofXRF, XRD, POM, AEM, SED and EDX, the chemical compositions of bodies and glazes, microstructures, crystalline phases and their chemical compositions of the tea dust ware of Tang Dynasty were investigated. The chemical compositions of Yaozhou(Shanxi Province) and Hunyuan(Sanxi Province ) tea dust sherds of Tang Dynasty were analyzed and both kinds of them were the crystalline glaze of pyroxene type and the main crystalline phase is fassaite and the secondary phase is bytownite. According to the physico-chemical analysers, the secondary phase was different with the change of Al203 content from 15% to 10%(wt.%), of which the former is plagioclase and the later will be wollastonite. The artistic appearance of the tea dust ware is controlled by the variety and amount of main crystalline phase, the iron concentration in the glaze and the particle size and dispersion of the crystallites. Thus the various elegant pieces of fine tea dust ware can be developed throught the research on the relationship between these factors and technology.
Keywords: tea dust ware; bytownite; pyroxene; wollastonite