In元素对Sn-Bi-Zn合金传热储热性能及结构的影响

doi:10.12028/j.issn.2095-4239.2017.0054

储能科学与技术 ›› 2017, Vol. 6 ›› Issue (4): 662-668.doi: 10.12028/j.issn.2095-4239.2017.0054

In元素对Sn-Bi-Zn合金传热储热性能及结构的影响

程晓敏1,2，王青萌1，李元元1，喻国铭2

1武汉理工大学材料科学与工程学院，湖北武汉 430070；2黄冈师范学院，湖北黄冈 438000

收稿日期:2017-05-15 修回日期:2017-06-06 出版日期:2017-07-01 发布日期:2017-06-06
通讯作者: 程晓敏（1964—），男，教授，研究方向为高性能储热材料，E-mail：chengxm@whut.edu.cn。
基金资助:
国家科技支撑计划（2012BAA05B05），湖北省科技支撑计划（2005BAA111），中央高校基本科研专项资金（WUT: 2017Ⅱ23GX）。

Effect of In on the thermal properties and microstructure of Sn-Bi-Zn alloy#br#

CHENG Xiaomin1,2, WANG Qingmeng1, LI Yuanyuan1, YU Guoming2

1School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, Hubei, China; 2Huanggang Normal University, Huanggang 438000, Hubei, China

Received:2017-05-15 Revised:2017-06-06 Online:2017-07-01 Published:2017-06-06

摘要/Abstract

摘要： 研究了不同含量的In元素对Sn-Bi-Zn共晶合金微观结构和热物性的影响。通过电子探针微观形貌分析（EPMA）、X射线衍射物相分析（XRD）和X射线荧光光谱分析（XRF）对合金的微观结构和物相组成进行了研究，并通过差示扫描量热仪（DSC）、热重分析仪（TG/DTA）、推杆式膨胀计（DIL 402C）和激光闪光法（LFA 457）综合分析了合金的各项热物性。结果表明，Sn-Bi-Zn共晶合金的显微组织主要由富Sn相、富Bi相和富Zn相组成，而随着In含量的增加(Sn48Bi50Zn2)100xInx合金会形成InSn4和BiIn金属间化合物和富In相。(Sn48Bi50Zn2)100xInx合金的熔化焓随In含量的增加而增加，相变温度随着In含量的增加而降低。(Sn48Bi50Zn2)100xInx合金的热膨胀系数随着温度的升高而增加，并且保持在13×106～15×106/℃之间。所有合金的密度和热扩散系数均随In含量的增加而降低，导热系数随In含量的增加而增加。

关键词: 传热材料, In元素, Sn-Bi-Zn, 导热系数

Abstract: The influence of the addition of In on the microstructure and thermal properties of Sn-Bi-Zn eutectic alloy was investigated. The microstructure and phase compositions were investigated by electron probe micro-analysis (EPMA), X-ray diffusion (XRD) and X-ray fluorescence spectroscopy (XRF), and the thermal properties were measured with differential scanning calorimeter (DSC), thermogravimetry (TG/DTA), a pushrod type expansion meter (DIL 402C) and a laser flash analyzer (LFA 457). The results indicated that the microstructure of Sn-Bi-Zn eutectic alloy was mainly composed of Sn-rich phase, Bi-rich phase and Zn-rich phase, but (Sn48Bi50Zn2)100−xInx alloys showed InSn4 and BiIn intermetallic compounds and In-rich phases with increasing In content. The melting enthalpies increased with increasing In content, and the phase change temperature decreased with increasing In content in the (Sn48Bi50Zn2) 100−xInx alloys. The thermal expansion of (Sn48Bi50Zn2) 100−xInx alloys increased with increasing temperature and was tunable between 13×10−6 and 15×10−6/℃ by the In addition. The densities and thermal diffusion coefficient of all the alloys decreased with the addition of In, whereas the thermal conductivity increased with increasing In content.

Key words: heat transfer material, in addition, Sn-Bi-Zn, thermal conductivity

程晓敏1,2，王青萌1，李元元1，喻国铭2. In元素对Sn-Bi-Zn合金传热储热性能及结构的影响[J]. 储能科学与技术, 2017, 6(4): 662-668.

CHENG Xiaomin1,2, WANG Qingmeng1, LI Yuanyuan1, YU Guoming2. Effect of In on the thermal properties and microstructure of Sn-Bi-Zn alloy#br#[J]. Energy Storage Science and Technology, 2017, 6(4): 662-668.

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In元素对Sn-Bi-Zn合金传热储热性能及结构的影响

Effect of In on the thermal properties and microstructure of Sn-Bi-Zn alloy#br#

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