Microstructure, wear resistance and antibacterial behaviors of novel CoCrFeNiCeX high entropy alloys

Jianguo Gao; Weiwei Chang; Min Zhou; Zikang Wang; Zhihao Yu; Hongchang Qian; Dawei Guo; Dawei Zhang

Journal of Materials Research and Technology (Jul 2024)

Microstructure, wear resistance and antibacterial behaviors of novel CoCrFeNiCeX high entropy alloys

Jianguo Gao,
Weiwei Chang,
Min Zhou,
Zikang Wang,
Zhihao Yu,
Hongchang Qian,
Dawei Guo,
Dawei Zhang

Affiliations

Jianguo Gao: Beijing Advanced Innovation Center for Materials Genome Engineering, Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing, 100083, China; National Materials Corrosion and Protection Data Center, University of Science and Technology Beijing, Beijing, 100083, China; BRI Southeast Asia Network for Corrosion and Protection (MOE), Shunde Innovation School of University of Science and Technology Beijing, Foshan, 528399, China
Weiwei Chang: Beijing Advanced Innovation Center for Materials Genome Engineering, Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing, 100083, China; National Materials Corrosion and Protection Data Center, University of Science and Technology Beijing, Beijing, 100083, China; BRI Southeast Asia Network for Corrosion and Protection (MOE), Shunde Innovation School of University of Science and Technology Beijing, Foshan, 528399, China
Min Zhou: Department of Electromechanical Engineering, University of Macau, Macau, 999078, China
Zikang Wang: Beijing Advanced Innovation Center for Materials Genome Engineering, Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing, 100083, China; National Materials Corrosion and Protection Data Center, University of Science and Technology Beijing, Beijing, 100083, China; BRI Southeast Asia Network for Corrosion and Protection (MOE), Shunde Innovation School of University of Science and Technology Beijing, Foshan, 528399, China
Zhihao Yu: Beijing Advanced Innovation Center for Materials Genome Engineering, Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing, 100083, China; National Materials Corrosion and Protection Data Center, University of Science and Technology Beijing, Beijing, 100083, China; BRI Southeast Asia Network for Corrosion and Protection (MOE), Shunde Innovation School of University of Science and Technology Beijing, Foshan, 528399, China
Hongchang Qian: Beijing Advanced Innovation Center for Materials Genome Engineering, Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing, 100083, China; National Materials Corrosion and Protection Data Center, University of Science and Technology Beijing, Beijing, 100083, China; BRI Southeast Asia Network for Corrosion and Protection (MOE), Shunde Innovation School of University of Science and Technology Beijing, Foshan, 528399, China; Corresponding author. Beijing Advanced Innovation Center for Materials Genome Engineering, Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing, 100083, China.
Dawei Guo: IDQ Science and Technology Development (Hengqin, Guangdong) Co. Ltd., Guangdong, China
Dawei Zhang: Beijing Advanced Innovation Center for Materials Genome Engineering, Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing, 100083, China; National Materials Corrosion and Protection Data Center, University of Science and Technology Beijing, Beijing, 100083, China; BRI Southeast Asia Network for Corrosion and Protection (MOE), Shunde Innovation School of University of Science and Technology Beijing, Foshan, 528399, China

Journal volume & issue: Vol. 31
pp. 2180 – 2192

Abstract

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In this work, a series of CoCrFeNiCeX (x = 0.1, 0.3, 0.5) high-entropy alloys (HEAs) were designed and prepared through vacuum induction melting. The microstructure, wear resistance and antibacterial behaviors of the HEAs were systematically investigated. The results showed that the HEAs are composed of FCC phase with dendrite structure and CeNi3 phase between dendrites. With the increase of Ce content, the mechanical property and antibacterial rate of the alloys was improved gradually. Due to the combined effect of CeNi3 phase and fine grain strengthening, the CoCrFeNiCe0.5 HEA exhibited high hardness of approximately 382 HV0.2 and the wear rate of only 1.11 × 10−4 mm3/N·m under the loading force of 5 N. The CoCrFeNiCe0.5 HEA also showed excellent antibacterial ability, which presented a 97.4% antibacterial rate against Escherichia coli and 89.6% antibacterial rate against Staphylococcus aureus after 3 days. This work provided a new strategy for designing a high performance alloy with excellent antibacterial behaviors and good wear resistance, which makes it meet the needs of long-term antibacterial application in harsh environments.

Published in Journal of Materials Research and Technology

ISSN: 2238-7854 (Print); 2214-0697 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.journals.elsevier.com/journal-of-materials-research-and-technology/

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