铱及铱铑合金微观特性和热电特性

doi:10.13251/j.issn.0254-6051.2022.03.041

金属热处理 ›› 2022, Vol. 47 ›› Issue (3): 222-226.DOI: 10.13251/j.issn.0254-6051.2022.03.041

铱及铱铑合金微观特性和热电特性

陈靖^1,2, 王高^1,2, 梁海坚³, 李志玲^1,2, 刘毅⁴, 张健康⁴

1.中北大学信息与通信工程学院, 山西太原 030051;
2.中北大学电子测试技术国家重点实验室, 山西太原 030051;
3.太原工业学院电子工程系, 山西太原 030051;
4.昆明贵金属研究所, 云南昆明 650106

收稿日期:2021-11-15 修回日期:2022-01-19 出版日期:2022-03-25 发布日期:2022-04-22
通讯作者: 王高,教授,E-mail:3436658278@qq.com
作者简介:陈靖(1995—),女,硕士研究生,主要研究方向为铱铑合金的应用,E-mail:1149045507@qq.com。
基金资助:
山西省自然科学基金(自由探索)(20210302124541)

Micro- and thermoelectric properties of iridium and iridium-rhodium alloys

Chen Jing^1,2, Wang Gao^1,2, Liang Haijian³, Li Zhiling^1,2, Liu Yi⁴, Zhang Jiankang⁴

1. School of Information and Communications Engineering, North University of China, Taiyuan Shanxi 030051, China;
2. National Key Laboratory for Electronic Measurement Technology, North University of China, Taiyuan Shanxi 030051, China;
3. Department of Electronic Engineering, Taiyuan Institute of Technology, Taiyuan Shanxi 030051, China;
4. Kunming Institute of Precious Metals, Kunming Yunnan 650106, China

Received:2021-11-15 Revised:2022-01-19 Online:2022-03-25 Published:2022-04-22

摘要/Abstract

摘要： 基于第一性原理计算研究了热电极铱和铱铑合金的能带结构和态密度。采用虚拟晶体近似方法建立了铱铑合金模型,通过搭建的试验平台测试了IrRh10-Ir热电偶和IrRh40-Ir热电偶的热电性能。结果表明,计算出的纯金属铱和铑的晶格常数与试验参数符合较好,铱铑合金具有良好的导体性能和结构稳定性。IrRh10-Ir热电偶和IrRh40-Ir热电偶具有良好的线性特性,灵敏度分别为2.7、5.6 μV/℃。有望将第一性原理计算分析应用于热电极材料的选择上。

关键词: 铱铑合金, 第一性原理, 热电偶, 热电性能

Abstract: Based on first-principles calculations, the band structure and density of states of the thermal electrode iridium and iridium-rhodium alloys were investigated. A model of iridium-rhodium alloy was established by virtual crystal approximation (VCA). The thermoelectric properties of IrRh10-Ir thermocouple and IrRh40-Ir thermocouple were tested by the test platform. The results show that the calculated lattice constants of pure metals iridium and rhodium are in good agreement with the test parameters, and the iridium-rhodium alloy has good conductor properties and structural stability. The IrRh10-Ir thermocouple and IrRh40-Ir thermocouple have good linearity characteristics, and the sensitivity is 2.7 μV/℃ and 5.6 μV/℃, respectively. It is expected that the firstprinciples calculation and analysis will be applied to the selection of the thermal electrode materials.

Key words: iridium-rhodium alloy, first principles, thermocouple, thermoelectric properties

中图分类号:

TB31

陈靖, 王高, 梁海坚, 李志玲, 刘毅, 张健康. 铱及铱铑合金微观特性和热电特性[J]. 金属热处理, 2022, 47(3): 222-226.

Chen Jing, Wang Gao, Liang Haijian, Li Zhiling, Liu Yi, Zhang Jiankang. Micro- and thermoelectric properties of iridium and iridium-rhodium alloys[J]. Heat Treatment of Metals, 2022, 47(3): 222-226.

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铱及铱铑合金微观特性和热电特性

Micro- and thermoelectric properties of iridium and iridium-rhodium alloys

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