|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Refractory Metals 2018
||Fabrication of Tungsten Nanopowder by Combustion-based Method
||Mingli Qin, Zheng Chen, Xuanhui Qu
|On-Site Speaker (Planned)
In this work, tungsten nanopowder was prepared by solution combustion synthesis (SCS) and hydrogen reduction. The precursor synthesized by SCS exhibits high reduction reactivity and can be completely reduced to pure tungsten nanopowder at as low as 650 ℃ for 2h. The tungsten particles reduced at 650 ℃ are short rod-like and the lengths of long axis and short axis are approximate 30 nm and 10 nm, respectively. The sintering behavior of the as-prepared tungsten nanopowder was investigated by analyzing the sintered compacts obtained at different sintering temperatures. 93.8% of relative density of the compact could be obtained at sintering temperature of 1350 ℃ and meanwhile the microhardness of the compact reached the highest point of 508.5 Hv0.2.
||Planned: Supplemental Proceedings volume