FABRICATION OF Zn4Sb3 ALLOYS BY A COMBINATION OF GAS-ATOMIZATION AND SPARK PLASMA SINTERING PROCESSES

被引：10

作者：

Dharmaiah, P. ^{[1
]}

Kim, H-S. ^{[1
]}

Lee, K-H. ^{[2
]}

Hong, S-J. ^{[1
]}

机构：

[1] Kongju Natl Univ, Div Adv Mat Engn, Cheonan, South Korea

[2] Chungnam Natl Univ, Dept Nano Mat Engn, Taejon 305764, South Korea

来源：

ARCHIVES OF METALLURGY AND MATERIALS | 2015年 / 60卷 / 02期

基金：

新加坡国家研究基金会;

关键词：

Gas atomization; Microstructure; Spark plasma sintering (SPS); X-ray diffraction; THERMOELECTRIC PROPERTIES; EXTRUSION; PHASES; ZINC;

D O I：

10.1515/amm-2015-0144

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

In this study, single phase polycrystalline Zn4Sb3 as well as 11 at.% Zn-rich Zn4Sb3 alloy having epsilon-Zn4Sb3 (majority phase) and Zn (minority phase) phases bulk samples produced by gas-atomization and subsequently consolidated by spark plasma sintering (SPS) process. The crystal structures were analyzed by X-ray diffraction (XRD) and cross-sectional microstructure were observed by the scanning electron microscopy (SEM). The internal grain microstructure of 11at.% Zn-rich Zn4Sb3 powders shows lamellar structure. Relative density, Vickers hardness and crack lengths were measured to investigate the effect of sintering temperature of Zn4Sb3 samples which are sintered at 653, 673 and 693 K. Relative density of the single phase bulk Zn4Sb3 sample reached to 99.2% of its theoretical density. The micro Vickers hardness of three different sintering temperatures were found around 2.17 - 2.236 GPa.

引用

页码：1417 / 1421

页数：5

共 17 条

[1] Thermoelectric properties of Zn4Sb3 prepared by hot pressing [J].