摘要
目前,顶杆热膨胀法在测定古陶瓷烧成温度中应用最为广泛。本研究首先对该方法研究现状进行了详细梳理,再通过中国古代陶器、白瓷、黑瓷的具体应用实例,详细分析了它们的热膨胀曲线特征,并结合对高铁胎的模拟实验研究,提出应从800℃以下的早期低温陶器样品、800℃以上且具有明显收缩转折点样品和高温没有收缩只有膨胀转折点样品这3种类型来进行具体分析。利用切线计算烧成温度只有在800℃以上且具有收缩转折点情形下正确率较高,而高温阶段的膨胀转折点温度只能作为参考;同时,也要利用较完整的烧结步骤曲线从化学组成等方面研究其原料特性,并结合吸水率等物理性能指标来进行验证。这些结果为该方法的进一步应用提供了参考依据。
At present,the push-rod thermal expansion method is most widely used in determining firing temperatures of ancient ceramics.Through review of the research status of this method and application to ancient Chinese pottery,white porcelain and black porcelain,we analyzed their thermal expansion curve characteristics in detail.In combination with simulation experiments on high-iron bodies,it was proposed that firing temperature analysis should be carried out from three types:low-temperature pottery(below 800℃),high temperature pottery(above 800℃)with obvious shrinkage turning points,and high temperature pottery with no shrinkage but only expansion turning points at high temperatures.Using a tangent line to calculate the firing temperature has higher accuracy only in the case of shrinkage turning points,and the temperatures of expansion turning points can be used only as references.At the same time,the characteristics of raw materials should be studied from the aspect of chemical composition using a relatively complete sintering step curve and verified by combining physical performance indexes such as water absorption rate and the like.These results provide a reference for further applications of this method.
作者
鲁晓珂
徐嫦松
李伟东
LU Xiaoke;XU Changsong;LI Weidong(Ancient Ceramic Research Center, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201899, China;Key Laboratory of the Comprehensive Analysis Technology for Ancient Ceramics and its Application (Shanghai Institute of Ceramics, Chinese Academy of Sciences), Ministry of Culture and Tourism, Shanghai 201899, China;Key Scientific Research Base of Ancient Ceramics (Shanghai Institute of Ceramics, Chinese Academy of Sciences), State Administration for Cultural Heritage, Shanghai 201899, China)
出处
《文物保护与考古科学》
北大核心
2020年第5期70-80,共11页
Sciences of Conservation and Archaeology
基金
国家重点研发计划资助(2019YFC1520202)。
关键词
顶杆热膨胀法
古陶瓷
烧成温度
热膨胀曲线
Push-rod thermal expansion method
Ancient ceramic
Firing temperature
Thermal expansion curve
