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Synthesis and Characterization of Nanoscale Tungsten Particles with Hollow Superstructure Using Spray Drying Combined with Calcination Process
- Source :
- Nanoscale Research Letters, Nanoscale Research Letters, Vol 14, Iss 1, Pp 1-9 (2019)
- Publication Year :
- 2018
-
Abstract
- 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 (NH4)6W7O24·6H2O. 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 .
- Subjects :
- Materials science
High-pressure gas
Sinter
Sintering
chemistry.chemical_element
Nanoparticle
02 engineering and technology
Tungsten
010402 general chemistry
01 natural sciences
Hollow superstructure
law.invention
law
Nanoscale tungsten powders
lcsh:TA401-492
General Materials Science
Calcination
Two-step calcination
Nano Idea
Correction
021001 nanoscience & nanotechnology
Condensed Matter Physics
Microstructure
0104 chemical sciences
Chemical engineering
chemistry
Spray drying
lcsh:Materials of engineering and construction. Mechanics of materials
0210 nano-technology
Superstructure (condensed matter)
BET theory
Subjects
Details
- ISSN :
- 19317573
- Volume :
- 14
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- Nanoscale research letters
- Accession number :
- edsair.doi.dedup.....d95ce5f670f96498981b4b00fcb47e02