宋代绿釉陶表面“银釉”的分析及其形成机理  

Analysis on the "Silvery Glaze"of Green Glazed Pottery of Song Dynasty and Its Formation Mechanism

作　　者：朱铁权[1] 王昌燧[2] 王洪敏[1] 毛振伟[1] 龚明[3] 吴晓松[4] 洪刚[1] 

机构地区：[1]中国科学技术大学科技史与科技考古系,合肥230026 [2]中国科学院研究生院科技史与科技考古系 [3]中国科学技术大学工程科学学院 [4]黄冈市博物馆

出　　处：《应用化学》2007年第9期977-981,共5页Chinese Journal of Applied Chemistry

基　　金：国家自然科学基金资助项目(19975046);中国科学院创新工程(KJCX-No4);教育部"985工程"(985-2-201)

摘　　要：银釉是古代铅釉陶瓷器表面较为常见一种病变。利用扫描电子显微镜能谱、X射线衍射、傅立叶红外光谱、光电子能谱等测试技术,分析了湖北黄冈地区出土宋代绿釉陶表面银釉的成分和结构。结果发现,银釉中富含钙(5.1%～9.2%)、磷(4.6%～9.2%)、铅(56.9%～70.5%)等元素,并有Pb10-xCax(PO4)(OH)2(x<2.7)物相存在。结合其出土前(弱酸性的土壤)埋藏环境,推测银釉应为土壤中羟磷灰石及各种磷酸化合物与釉陶表面Pb2+发生化学反应的产物。Silvery glaze is a kind of common disease covered on the surface of ancient lead glazed ceramics. Using analytical methods of SEM-EDS, XRD, FTIR, XPS, a piece of green glazed pottery of Song dynasty excavated from Huanggang area, Hubei province, was analyzed. The analysis indicates that the silvery glaze is in high content of calcium（Ca：5. 1% - 10.3%）, phosphor（P：4.6% - 9.2%） and lead（Pb：56.9% 70. 5 % ）, which was mainly in crystalline phase of Pb10-x Cax （ PO4 ） （OH） 2 （x 〈 2. 7 ）. In addition, elements of iron（ Fe ：2.5% - 3.8% ） and chlorine （ C1 ： 1.8% - 2. 1% ） were detected in the area of brown and yellow of the silvery glaze. Due to the local burial circumstance of weak acid, the silvery glaze is the result from the chemical reaction between the lead ion in the glaze of pottery and all kinds of phosphate compound in the soil.

关 键 词：绿釉陶 银釉 磷酸铅钙 磷酸盐 

分 类 号：O655.4[理学—分析化学] O655.5[理学—化学]