Hydrogen Reduction Behavior and Microstructure Characteristics of WO3-NiO-CuO Powder Mixture

Authors

  • Youn Ji Heo Seoul National University of Science and Technology, Department of Materials Science and Engineering, Seoul 01811, Republic of Korea https://orcid.org/0000-0003-3932-3491
  • Eui Seon Lee Seoul National University of Science and Technology, Department of Materials Science and Engineering, Seoul 01811, Republic of Korea https://orcid.org/0000-0001-6405-7303
  • Ji Young Kim Seoul National University of Science and Technology, Department of Materials Science and Engineering, Seoul 01811, Republic of Korea
  • Sung-Tag Oh Seoul National University of Science and Technology, Department of Materials Science and Engineering, Seoul 01811, Republic of Korea https://orcid.org/0000-0003-4556-4291
  • Jongmin Byun Seoul National University of Science and Technology, Department of Materials Science and Engineering, Seoul 01811, Republic of Korea https://orcid.org/0000-0002-0354-237X

DOI:

https://doi.org/10.24425/amm.2024.149763

Abstract

The characteristics and hydrogen reduction behavior of W-0.8 wt% Ni-0.4 wt% Cu powder synthesized from WO3-NiOCuO composite powder have been investigated. The metal oxide powder mixtures were prepared using a ball milling process. XRD analysis and HR-TEM revealed that the oxide powders are changed to W and CuNi alloy powders with an average particle size of about 100 nm by hydrogen reduction. To understand the reduction behavior of oxide powders, TG analysis was performed, and the reduction kinetics was evaluated by the amount of peak shift with heating rates. The activation energies for the reduction of WO3-NiO-CuO, estimated by the slope of the Kissinger plot, were measured as 60.6-114.4 kJ/mol depending on reduction steps.

Published

2024-06-21

How to Cite

Heo, Youn Ji, et al. “Hydrogen Reduction Behavior and Microstructure Characteristics of WO3-NiO-CuO Powder Mixture”. Archives of Metallurgy and Materials, vol. 69, no. 2, June 2024, doi:10.24425/amm.2024.149763.

Issue

Vol. 69 No. 2 (2024)

Section

Articles