Plasma Spheroidization of Micropowders of a Heat-Resistant Alloy Based on Nickel Monoaluminide

Plasma Spheroidization of Micropowders of a Heat-Resistant Alloy Based on Nickel Monoaluminide

Spheroidization of micropowders of a heat-resistant alloy based on nickel aluminide with a particle size of 20 to 45 μm was studied. The alloy was produced by calcium hydride reduction (CHR) and elemental synthesis (SHS). The spheroidization was carried out in a flow of argon–hydrogen thermal plasma...

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Veröffentlicht in:Doklady. Chemistry 2018-12, Vol.483 (2), p.312-317
Hauptverfasser: Tsvetkov, Yu. V., Samokhin, A. V., Alekseev, N. V., Fadeev, A. A., Sinaiskii, M. A., Levashov, E. A., Kaplanskii, Yu. Yu
Format: Artikel
Sprache:eng
Schlagworte:
Chemical Technology
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Heat resistant alloys
Heat resisting alloys
Industrial Chemistry/Chemical Engineering
Intermetallic compounds
Nickel aluminides
Spheroidizing
Thermal plasmas
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Zusammenfassung:Spheroidization of micropowders of a heat-resistant alloy based on nickel aluminide with a particle size of 20 to 45 μm was studied. The alloy was produced by calcium hydride reduction (CHR) and elemental synthesis (SHS). The spheroidization was carried out in a flow of argon–hydrogen thermal plasma generated by a direct-current (DC) plasma torch. The degree of spheroidization of the micropowders reached 98.5%, and the flowability was 20 s/50 g.
ISSN:0012-5008
1608-3113
DOI:10.1134/S0012500818120030