作者：李蒙1,2, 李洪涛2, 郅惠博2, 吴益文2, 王彪2, 吴晓红2, 陈杰2, 季诚昌1, 宿太超3
作者单位：1. 东华大学材料科学与工程学院, 上海 201620;
2. 上海出入境检验检疫局, 上海 200135;
3. 河南理工大学材料科学与工程学院, 河南 焦作 454000
关键词：热电材料; 塞贝克系数; 测试; 影响因素
摘要：
为提高热电材料塞贝克系数的测试准确度,以康铜合金、钴酸钙、碲化铅、氧化锌等典型块体热电材料为测试对象进行一系列测试,研究测温热电偶的塞贝克效应、温差设置、数据处理方式对塞贝克系数测试的影响。结果表明:热电偶的塞贝克效应对Seebeck系数测试准确度的影响是显著的;样品两端温差设置在5~20℃之间,直线拟合方式采用不过原点拟合,可以使Seebeck系数测试结果的准确度得到大幅提高。
Study on measurement of Seebeck coefficient for thermoelectric materials
LI Meng1,2, LI Hong-tao2, ZHI Hui-bo2, WU Yi-wen2, WANG Biao2, WU Xiao-hong2, CHEN Jie2, JI Cheng-chang1, SU Tai-Chao3
1. College of Materials Science and Engineering, Donghua University, Shanghai 201620, China;
2. Shanghai Entry-Exit Inspection & Quarantine Bureau, Shanghai 200135, China;
3. College of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China
Abstract: In order to improve the accuracy of measurement of Seebeck coefficient, this article made a systematic research of typical thermoelectric materials, including Constantan, Ca3Co4O9, PbTe and ZnO. The impact of Seebeck effect of thermocouples, different temperature settings and the way of curve fitting on the measurement of resistivity were investigated. The results show that the impact of Seebeck effect of thermocouples on the measurement of Seebeck coefficient is obvious. In order to improve the accuracy, temperature difference across the sample should set between 5℃ and 20℃. Moreover, the fitting curve should not be through the origin.
Keywords: thermoelectric materials; Seebeck coefficient; measurement; influential factor
2014, 40(4): 132-136 收稿日期: 2013-6-5;收到修改稿日期: 2013-7-22
基金项目: 国家自然科学基金-青年科学基金项目(51001042);国家质量监督检验检疫总局科技计划项目(2012IK049)
作者简介: 李蒙(1989-),男,山东济宁市人,硕士研究生,专业方向为热电材料性能测试。
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