- Zhang Shirong 1
Zhang Shirong
State Key Laboratory of Materials Processing and Die and Mould Technology,School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
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Search for this author on this site - Chen Shijie 1
Chen Shijie
State Key Laboratory of Materials Processing and Die and Mould Technology,School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
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Search for this author on this site - Wang Rui 1
Wang Rui
State Key Laboratory of Materials Processing and Die and Mould Technology,School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
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Search for this author on this site - Ye Chao 1
Ye Chao
State Key Laboratory of Materials Processing and Die and Mould Technology,School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
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Search for this author on this site - Xue Lihong 1
Xue Lihong
State Key Laboratory of Materials Processing and Die and Mould Technology,School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
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Search for this author on this site - Zhou Qilai 2
Zhou Qilai
School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China
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Search for this author on this site - Yan Youwei 1
Yan Youwei
State Key Laboratory of Materials Processing and Die and Mould Technology,School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
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1.State Key Laboratory of Materials Processing and Die and Mould Technology,School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China;2.School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China
TG146.4+1
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Self-passivating W-Si-Zr alloys were prepared by mechanical alloying and spark plasma sintering. Microstructures of alloys were characterized by XRD, XPS, SEM and EPMA, and their oxidation resistance was tested. The results show that the alloy contains W-enriched, W5Si3, SiOx (x=1, 1.5, 2) and ZrOx (x=1, 1.5, 2) phases. The W5Si3 phase distributes continuously. SiOx and ZrOx particles are dispersed in the matrix with the sizes of 1.0–2.5 μm and 0.7–2.7 μm, respectively, and ZrOx particles are often associated with SiOx particles. The W5Si3 plays a key role in the oxidation resistance of the alloy. The addition of Zr contributes to the formation of W5Si3 phase, whose area reaches 70.2%. The oxidation rate of W-Si-Zr alloy is about 1/2 of that of W-Si alloy and 1/36 of that of pure W at 1000 ℃ in the air.
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[Zhang Shirong, Chen Shijie, Wang Rui, Ye Chao, Xue Lihong, Zhou Qilai, Yan Youwei. Microstructure and Oxidation Resistance of Self-Passivating W-Si-Zr Alloys[J]. Rare Metal Materials and Engineering,2025,54(3):741~746.]
DOI：10.12442/j. issn.1002-185X.20230722
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History
- Received:November 14,2023
- Revised:January 03,2024
- Adopted:January 05,2024
- Online: March 25,2025
- Published: March 25,2025