Spheroidization of Fe-Based Powders in Plasma Jet of DC Arc Plasma Torch and Application of These Powders in Selective Laser Melting

Самохин, А. В.; Fadeev, A. A.; Алексеев, Н. В.; Sinaysky, M. A.; Sufiyarov, V. Sh.; Борисов, Е. В.; Korznikov, O. V.; Fedina, Tatiana; Vodovozova, G. S.; Baryshkov, S. V.

doi:10.1134/s2075113320030417

Cited by 7 publications

(1 citation statement)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…An effective method for producing powders with a spherical particle shape is the processing of powders consisting of particles with an irregular shape in a flow of thermal plasma of electric discharges where the particles melt and become spherical due to surface tension forces. Plasma processes of spheroidization, the studies of which were started in the second half of the last century [ 7 , 8 ], are now widely used for processing metal powders [ 9 , 10 , 11 , 12 , 13 , 14 ]. However, the production of powders of WC-Co hard metals with a spherical particle shape in plasma processes has been studied only in a very limited number of works.…”

Section: Introductionmentioning

confidence: 99%

Preparation of W-C-Co Composite Micropowder with Spherical Shaped Particles Using Plasma Technologies

et al. 2021

View full text Add to dashboard Cite

The possibility of obtaining composite micropowders of the W-C-Co system with a spherical particle shape having a submicron/nanoscale internal structure was experimentally confirmed. In the course of work carried out, W-C-Co system nanopowders with the average particle size of approximately 50 nm were produced by plasma-chemical synthesis. This method resulted in the uniform distribution of W, Co and C among the nanoparticles of the powder in the nanometer scale range. Dense microgranules with an average size of 40 microns were obtained from the nanopowders by spray drying. The spherical micropowders with an average particle size of 20 microns were received as a result of plasma treatment of 25.36 microns microgranule fraction. The spherical particles obtained in the experiments had a predominantly dense microstructure and had no internal cavities. The influence of plasma treatment process parameters on dispersity, phase, and chemical composition of spherical micropowders and powder particles microstructure has been established.

show abstract