کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1490326 | 992322 | 2011 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Thermoelectric properties of Zn4Sb3 prepared by hot pressing Thermoelectric properties of Zn4Sb3 prepared by hot pressing](/preview/png/1490326.png)
Polycrystalline specimens of the thermoelectric material Zn4Sb3 were prepared by the hot-pressing method at various temperatures and pressures and their thermoelectric properties were evaluated in a temperature range from 298 K to 673 K. A single phase of Zn4Sb3 was obtained in the samples prepared at 673 K with a pressure above 150 MPa, whereas ZnSb was placed in the Zn4Sb3 matrix for the samples prepared at 100 MPa. The electrical transport properties of the single phase compound showed p-type conduction and metallic transport behavior based on the temperature dependence. The sample produced at 673 K under a pressure of 200 MPa exhibited the highest ZT value of 1.36 at 673 K. This study suggests that the dense and single-phase Zn4Sb3 compound is a route to achieve a high thermoelectric performance.
.Figure optionsDownload as PowerPoint slideHighlights
► Zn4Sb3 is promising thermoelectric materials.
► Effect of the hot-pressing condition on the thermoelectric properties is investigated.
► High ZT = 1.36 at 673 K is achieved at the densified samples.
► Densified samples of single phase are essential to achieve high ZT.
Journal: Materials Research Bulletin - Volume 46, Issue 9, September 2011, Pages 1490–1495