Aluminum-alumina composites: Part I: Obtaining and characterization of powders

Alexander A. Gromov, Anton Yu Nalivaiko, Grayr N. Ambaryan, Mikhail S. Vlaskin, Olesya A. Buryakovskaya, Sergey A. Kislenko, Andrey Z. Zhuk, Evgeniy I. Shkolnikov, Konstantin V. Slyusarskiy, Alexandra A. Osipenkova, Alexey N. Arnautov

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The process of advanced aluminum-alumina powders production for selective laser melting was studied. The economically effective method of obtaining aluminum-alumina powdery composites for further selective laser melting was comprehensively studied. The aluminum powders with 10-20 wt. % alumina content were obtained by oxidation of aluminum in water. Aluminum oxidation was carried out at ≤200 ffiC. The oxidized powders were further dried at 120 ffiC and calcined at 600 ffiC. Four oxidation modes with different process temperatures (120-200 ffiC) and pressures (0.15-1.80 MPa) were investigated. Parameters of aluminum powders oxidation to obtain composites with 10.0, 14.5, 17.4, and 20.0 wt. % alumina have been determined. The alumina content, particle morphology, and particle size distribution for the obtained aluminum-alumina powdery composites were studied by XRD, SEM, laser diffraction, and volumetric methods. According to the obtained characteristics of aluminum-alumina powdery composites, they are suitable for the SLM process.

Original languageEnglish
Article number3180
JournalMaterials
Volume12
Issue number19
DOIs
Publication statusPublished - 1 Oct 2019
Externally publishedYes

Keywords

  • Alumina
  • Aluminum
  • Composite
  • Oxidation
  • Particle morphology
  • Powder
  • Selective laser melting

ASJC Scopus subject areas

  • Materials Science(all)

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