Multiple analytical characterization of Madao chariot horse crests from a Chu noble tomb
摘要
Madao is a kind of chariot horse crest comprising tassels wound on sticks mounted to oval wooden bases affixed to the foreheads of horses. To reveal complex materials and techniques of Madao artifacts, the study employs a range of approaches including polarized light microscopy, SEM-EDS, XRD, and THM-Py-GC/MS. The results indicated that wooden oval bases were composed of a ground layer and a lacquer layer. Microscopic analysis confirmed that the crushed and size-sorted clay particles were identified as unheated natural clays serving as inorganic fillers in the ground layer. The lacquer coated on the wooden base was urushiol-based lacquer without drying oils modified. Besides, tassels were also characterized by consisting of Hydrophasianus chirurgus feathers secured with bast fibers. These results demonstrate how Chu artisans engineered composite materials to meet the specific performance requirements of horse components.