High-resolution nanostructural investigation of Zn₄Sb₃ alloys

详细信息    查看全文

• 作者：Baptiste Gault ; Emmanuelle A. Marquis ; David W. Saxey ; Gareth M. Hughes ; Dominique Mangelinck ; Eric S. Toberer ; G. Jeff Snyder
• 关键词：Thermoelectric material ; Zinc antimonide ; Atom probe tomography ; Scanning electron microscopy
• 刊名：Scripta Materialia
• 出版年：2010
• 出版时间：October 2010
• 年：2010
• 卷：63
• 期：7
• 页码：784-787
• 全文大小：831 K

文摘

Zinc antimonides exhibit high thermoelectric figures of merit and bear great potential for power generation. To advance the understanding of the structure–property relationship in these alloys, the microstructure of a nanocrystalline Zn₄Sb₃ alloy, containing 57.29 at. % Zn, was investigated by scanning electron microscopy and atom probe tomography. Chemical inhomogeneities were observed at grain boundaries. Within the grains the distribution of Zn shows large fluctuations inducing a complex microstructure made of Zn-rich and Sb-rich regions at a nanometer scale.