Abstract
In this work, Sn4P3 powders were successfully synthesized by mechanical alloying route and the relative processing parameters were optimized in details, including the weight ratio of Sn/P, milling duration, Al powders doping and sintering treatment. Based on the microstructure analysis of products, the optimal weight ratio of Sn/P was determined as 5:1, closing to the stoichiometric ratio of Sn4P3. After milling for 30h, Sn4P3wires with large specific surface were obtained. It is worth noting that after doping with 5 wt.% Al powders, more quantity of Sn4P3 wires with multi-directional bending were observed, which would improve the application of phosphides due to the larger surface area. Furthermore, it was found that the sintering process would improve the formation of Sn4P3according to the increasing intensity of diffraction peaks. Meanwhile, the quantity of Sn4P3 wires was found to decrease, which might result from the merging behavior of powders during the sintering process.
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