Issue 28, 2018, Issue in Progress
From the journal:

RSC Advances

Thermoelectric properties of n-type ZrNiSn prepared by rapid non-equilibrium laser processing†

Yonggao Yan,*a   Wuqian Geng,a   Junhao Qiu,a   Hongquan Ke,a   Chuang Luo,a   Jihui Yang, ORCID logo b   Ctirad Uherc  and  Xinfeng Tang ORCID logo *a  

* Corresponding authors

a State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, Hubei 430070, China
E-mail: yanyonggao@whut.edu.cn, tangxf@whut.edu.cn

b Department of Materials Science and Engineering, University of Washington, Seattle, Washington 98195, USA

c Department of Physics, University of Michigan, Ann Arbor, Michigan 48109, USA

Abstract

The traditional manufacturing of thermoelectric (TE) modules is a complex process that requires a long processing time and is high cost. In this work, we introduce a novel one-step 3D printing technique for TE module manufacturing, which integrates the Self-propagation High-temperature Synthesis (SHS) with the Selective Laser Melting (SLM) method. As a demonstration of this technique, bulk ZrNiSn samples were successfully fabricated on a Ti substrate. The effect of SLM processing parameters, such as the laser power and the scanning speed, on the quality of the forming ZrNiSn layers was systematically studied and analyzed, and the optimal processing window for the SLM process was determined. Transport property measurements indicate that the SLM-processed ZrNiSn possesses the maximum thermoelectric figure of merit ZT of 0.39 at 873 K. The interface of the ZrNiSn with the Ti substrate shows good adherence and low contact resistivity. The work demonstrates the viability of the SHS-SLM method for rapid fabrication of TE materials, legs and even modules.

Graphical abstract: Thermoelectric properties of n-type ZrNiSn prepared by rapid non-equilibrium laser processing

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Article information

DOI
https://doi.org/10.1039/C8RA00992A
Article type
Paper
Submitted
01 Feb 2018
Accepted
03 Apr 2018
First published
26 Apr 2018
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2018,8, 15796-15803

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Thermoelectric properties of n-type ZrNiSn prepared by rapid non-equilibrium laser processing

Y. Yan, W. Geng, J. Qiu, H. Ke, C. Luo, J. Yang, C. Uher and X. Tang, RSC Adv., 2018, 8, 15796 DOI: 10.1039/C8RA00992A

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