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

• Autorzy: Heo Youn Ji , Lee Eui Seon , Kim Ji Young , Oh Sung-Tag , Byun Jongmin

Identyfikatory

DOI

10.24425/amm.2024.149763

• Języki publikacji: EN

Abstrakty

EN

The characteristics and hydrogen reduction behavior of W-0.8 wt% Ni-0.4 wt% Cu powder synthesized from WO₃-NiO-CuO 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.

Słowa kluczowe

EN

W-Ni-Cu alloy; oxide powder mixture; hydrogen reduction behavior; microstructure

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2024
• Tom: Vol. 69, iss. 2
• Strony: 443--446
• Opis fizyczny: Bibliogr. 14 poz., fot., rys., tab.

Twórcy

autor

Heo Youn Ji

• 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

autor

Lee Eui Seon

• 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

autor

Kim Ji Young

• Seoul National University of Science and Technology, Department of Materials Science and Engineering, Seoul 01811, Republic of Korea

autor

Oh Sung-Tag

• 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

autor

Byun Jongmin

• 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

Bibliografia

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Uwagi

This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (Ministry of Science and CCT) (NRF-2022M3H4A1A04085307).