کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
798848 | 1466780 | 2007 | 4 صفحه PDF | دانلود رایگان |
In order to explore new technologies to synthesize the CoSb3 type thermoelectric materials, the basic technologies of preparing CoSb3 powder by mechanical alloying were investigated. The phase transformations and crystal size of Co–3Sb powder were analyzed by X-ray diffraction (XRD). The shape and grain size of CoSb3 powder were observed by scanning electron microscope (SEM) and transmission electron microscope (TEM). The results show that the single phase CoSb3 powder with 20–35 nm nanocrystalline was prepared successfully by milling for 5 h under a ball to powder ratio of 20:1 and a working voltage of 110 V for the high-energy mill. It is considered that CoSb3 is a metastable phase in long time high-energy milling, as it tends to decompose.
Journal: Journal of Materials Processing Technology - Volume 184, Issues 1–3, 12 April 2007, Pages 257–260