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Meeting 2018 TMS Annual Meeting & Exhibition
Symposium Refractory Metals 2018
Presentation Title Fabrication of Tungsten Nanopowder by Combustion-based Method
Author(s) Mingli Qin, Zheng Chen, Xuanhui Qu
On-Site Speaker (Planned) Mingli Qin
Abstract Scope 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.
Proceedings Inclusion? Planned: Supplemental Proceedings volume

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A Metallurgical Study of Pressure Resistance Welded Molybdenum Based Materials
A Study on the Potential Analogous Rhenium Effect of Manganese in Tungsten-molybdenum Alloys Prepared by Mechanical Alloying
Alloying Behaviour and Properties of Tetragonal Nb5Si3
Assessments of the Mo-Si-X-(B) System for High Temperature Structural Application Potentials
Characteristics of Dynamic Abnormal Grain Growth in Mo and Ta
Effect of Oxide Coating on the Fusion Welding of Molybdenum Tubing
Fabrication of Tungsten Nanopowder by Combustion-based Method
Fracture Toughness Evaluation and Microstructural Characterization of Drawn Tungsten Wires
High Ductility in Bulk Polycrystalline Tungsten Produced by Equal Channel Angular Extrusion
High Temperature Oxidation Behaviors of Refractory Complex Concentrated Alloys (RCCAs)
Mechanical Behavior of a Three-phase Mo-Si-B Alloy Produced by Reaction Synthesis
Microstructure and Mechanical Properties of Cr-Si High-temperature Alloys
On the Design and Selection of Nb In Situ Composites
Opportunities for BCC Refractory-metal-based Superalloys
Oxidation and Creep Behavior of Mo-Si-Ti Alloys
Oxidation Resistance of W Substituted Mo-Si-B
Synthesis of MoC-graphite Composite by High-energy Ball Milling
Tensile Response of Binary Mo-Si Solid Solution Alloys

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