Features of passivation, oxidation and combustion of tungsten nanopowders by air

Young Soon Kwon, Alexander A. Gromov, Alexander P. Ilyin, Alexander A. Ditts, Ji Soon Kim, Sang Ha Park, Moon Hee Hong

Research output: Contribution to journal › Article

Abstract

The passivation, oxidation and combustion of tungsten nanopowders (NP) (a_s ∼ 100 nm), produced by an electrical explosion of wires (WEE) method, has been studied in air medium. The phase transformation for W nanopowders under air-oxidation was investigated. The oxidation process and an analysis of passivated powders were studied by FESEM, EDS, XPS, XRD, TEM, DTA-TGA and size distribution analysis was also observed by a video camera. After the comprehensive testing of passivated, oxidized and burned powders, a chemical process of oxidation of W nanoparticles was suggested.

Original language	English
Pages (from-to)	235-241
Number of pages	7
Journal	International Journal of Refractory Metals and Hard Materials
Volume	22
Issue number	6
DOIs	https://doi.org/10.1016/j.ijrmhm.2004.06.005
Publication status	Published - 1 Nov 2004

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Keywords

Combustion and coatings
Oxidation
Passivation
Tungsten nanopowder

ASJC Scopus subject areas

Metals and Alloys

Cite this

Kwon, Y. S., Gromov, A. A., Ilyin, A. P., Ditts, A. A., Kim, J. S., Park, S. H., & Hong, M. H. (2004). Features of passivation, oxidation and combustion of tungsten nanopowders by air. International Journal of Refractory Metals and Hard Materials, 22(6), 235-241. https://doi.org/10.1016/j.ijrmhm.2004.06.005

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abstract = "The passivation, oxidation and combustion of tungsten nanopowders (NP) (as ∼ 100 nm), produced by an electrical explosion of wires (WEE) method, has been studied in air medium. The phase transformation for W nanopowders under air-oxidation was investigated. The oxidation process and an analysis of passivated powders were studied by FESEM, EDS, XPS, XRD, TEM, DTA-TGA and size distribution analysis was also observed by a video camera. After the comprehensive testing of passivated, oxidized and burned powders, a chemical process of oxidation of W nanoparticles was suggested.",

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AU - Kwon, Young Soon

AU - Gromov, Alexander A.

AU - Ilyin, Alexander P.

AU - Ditts, Alexander A.

AU - Kim, Ji Soon

AU - Park, Sang Ha

AU - Hong, Moon Hee

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AB - The passivation, oxidation and combustion of tungsten nanopowders (NP) (as ∼ 100 nm), produced by an electrical explosion of wires (WEE) method, has been studied in air medium. The phase transformation for W nanopowders under air-oxidation was investigated. The oxidation process and an analysis of passivated powders were studied by FESEM, EDS, XPS, XRD, TEM, DTA-TGA and size distribution analysis was also observed by a video camera. After the comprehensive testing of passivated, oxidized and burned powders, a chemical process of oxidation of W nanoparticles was suggested.

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10.1016/j.ijrmhm.2004.06.005