Atomistic simulations of nanoscale tungsten clusters: From structure and energetics to melting properties

Nanoscale tungsten (W) powder is used in some special materials. In this study, a hollow superstructure W powder consisting of nanoparticles was synthesized by spray drying combined with two-step calcination from commercial (NH 4 ) 6 W 7 O 24 ·6H 2 O. The high-pressure gas (HPG) was the significant factor in spray drying process, which affect the BET surface area and average particles size of the spray-dried powders. The detailed influences of calcined steps and calcination temperature in the microstructure and average particles size of final W particles were investigated. The size distribution of as-synthesized nanoscale W particles with hollow superstructure was from 40 to 200 nm, and the average size was about 100 nm. The as-synthesized W powder shows good sintering properties. It should be noted that the powder technology in this study can be used to synthesize other powders with high-performance requirements. Graphical abstract .

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Atomistic simulations of nanoscale tungsten clusters: From structure and energetics to melting properties

Cited by 2 publications

References 37 publications

Equilibrium concentration of hydrogen at tungsten surface

Equilibrium concentration of hydrogen at tungsten surface

Synthesis and Characterization of Nanoscale Tungsten Particles with Hollow Superstructure Using Spray Drying Combined with Calcination Process

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