Publication detail

Production of spherical Mo and Mo-Si powders by spray drying of Si suspension in a water-soluble Mo precursor

TKACHENKO, S. OLIVER URRUTIA, C. KSENZOVA, O. SLÁMEČKA, K. BEDNAŘÍKOVÁ, V. REMEŠOVÁ, M. BALÁŽ, M. DEÁK, A. MONTUFAR JIMENEZ, E. ČELKO, L.

Original Title

Production of spherical Mo and Mo-Si powders by spray drying of Si suspension in a water-soluble Mo precursor

Type

journal article in Web of Science

Language

English

Original Abstract

The study focuses on the production of molybdenum (Mo) and molybdenum-silicon (Mo-Si) powders using the spray drying method, followed by calcination and reduction steps. Mo powder was produced from an aqueous solution of ammonium hexamolybdate (AHM), while composite Mo-Si powders were produced from the same solution with suspended submicrometric Si particles. The as-sprayed powders were amorphous and had spherical hollow-shell morphology. In the case of Mo-Si composite powders, the powders had uniformly embedded Si aggregates on the surface. The spherical hollow-shell morphology of the powders was retained after calcination and reduction treatments. The observed chemical transition was AHM -. MoO3 -. Mo for Mo powders and AHM-Si -. MoO3-Si -. Mo-Si for composite powders. Extrusion tests demonstrated the suitability of the produced powders for extrusion-based additive manufacturing. The powders were extrudable at low load, resulting in stable filaments that stack layer by layer without deformation. The extruded filaments were then subjected to debinding and sintering processes, reaching an intermediate state of densification. Filaments fabricated from composite Mo-Si powders confirmed the alloying of Mo grains with Si during the sintering process. (c) 2023 The Society of Powder Technology Japan. Published by Elsevier BV and The Society of Powder Technology Japan. All rights reserved.

Keywords

Molybdenum; Metal matrix composite; Silicon; Spray drying; Reduction; Extrusion

Authors

TKACHENKO, S.; OLIVER URRUTIA, C.; KSENZOVA, O.; SLÁMEČKA, K.; BEDNAŘÍKOVÁ, V.; REMEŠOVÁ, M.; BALÁŽ, M.; DEÁK, A.; MONTUFAR JIMENEZ, E.; ČELKO, L.

Released

1. 1. 2024

Publisher

ELSEVIER

Location

AMSTERDAM

ISBN

0921-8831

Periodical

ADVANCED POWDER TECHNOLOGY

Year of study

35

Number

1

State

Japan

Pages count

12

URL

https://doi.org/10.1016/j.apt.2023.104313

BibTex

@article{BUT189830,
  author="Serhii {Tkachenko} and Carolina {Oliver Urrutia} and Olha {Ksenzova} and Karel {Slámečka} and Vendula {Bednaříková} and Michaela {Remešová} and Matej {Baláž} and Andréa {Deák} and Edgar Benjamin {Montufar Jimenez} and Ladislav {Čelko}",
  title="Production of spherical Mo and Mo-Si powders by spray drying of Si suspension in a water-soluble Mo precursor",
  journal="ADVANCED POWDER TECHNOLOGY",
  year="2024",
  volume="35",
  number="1",
  pages="12",
  doi="10.1016/j.apt.2023.104313",
  issn="0921-8831",
  url="https://doi.org/10.1016/j.apt.2023.104313"
}