秦俑陶片的偏光显微分析研究

为了预防性保护和修复秦俑,必须掌握秦俑残片显微结构及其烧制环境、破损方式,从而为改善秦俑修复工艺、筛选修复材料提供基础,运用偏光显微镜对秦兵马俑残片中的一些矿物质(石英、长石、云母等)颗粒的分布形态和含量来分析陶土的成分结构、制作工艺、烧成气氛及原料来源等信息。结果表明,秦俑陶片主要成分为少量砂屑及大量粘土,而粘土为岩土矿风化的产物,秦俑残片裂痕较多的部位风化、酥粉痕迹明显。秦俑制作工艺以模为主,模、塑结合,并在粘土中添加了细砂,多于还原气氛中烧制而成。

Polarize light microscopy on the fragments of Qin terracotta

In order to conserve and restore Qin terracotta,it is necessary to know the microstructure of the broken fragments,and their brokage mode.By means of PLM(Polarize Light Microscopy),the composition of mineral particles and their microstructures have been studied.The results have revealed the clay came from the weathered rock minerals also provided some information about their making technique and burning environment.