| 引用本文: | 张玥,曲士民,孙晨,吕亮亮,杨沐村,郑伟,崔崇,鲁仰辉,刘伟,魏明星,刘彤.NbTiCoNiX(X=Mo,V,Fe)高熵合金的微观结构及渗氢性能研究[J].材料科学与工艺,2026,34(3):10-19.DOI:10.11951/j.issn.1005-0299.20240249. |
| ZHANG Yue,QU Shimin,SUN Chen,LÜ Liangliang,YANG Mucun,ZHENG Wei,CUI Chong,LU Yanghui,LIU Wei,WEI Mingxing,LIU Tong.Microstructures and hydrogen permeability properties of the novel NbTiCoNiX (X=Mo,V,Fe) high-entropy alloys[J].Materials Science and Technology,2026,34(3):10-19.DOI:10.11951/j.issn.1005-0299.20240249. |
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| NbTiCoNiX(X=Mo,V,Fe)高熵合金的微观结构及渗氢性能研究 |
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张玥1,曲士民2,孙晨1,吕亮亮2,杨沐村1,郑伟2,崔崇1,鲁仰辉1,刘伟1,魏明星3,刘彤3
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(1.国家电投集团科学技术研究院有限公司,北京 102200; 2.内蒙古霍煤鸿骏铝电有限责任公司,内蒙古 霍林郭勒 029200; 3.北京航空航天大学 材料科学与工程学院,北京 100191)
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| 摘要: |
| 安全高效的氢气分离及提纯技术是氢能产业发展的关键环节,现有ⅤB族合金渗氢膜的抗氢脆性能普遍较差,迫切需要探索兼具高渗氢系数和优异抗氢脆性能的渗氢合金成分。本文自主提出高熵渗氢合金的设计理念,并通过真空水冷铜坩埚电弧熔炼炉制备了NbTiCoNiX(X=Mo,V,Fe)高熵渗氢合金,随后利用XRD、SEM等表征技术对3种合金的相组成和显微组织等进行分析,并通过自制的渗氢性能测量仪测试合金的渗氢系数和抗氢脆性能。结果表明:3种高熵渗氢合金均由BCCNb相和B2Ti(Co,Ni)相组成,符合“多相构成,功能分担”的渗氢合金设计理念。其中,Nb35Ti25Co20Ni10V10具有最佳的综合渗氢性能,合金在673 K下的渗氢系数为2.01×10-8 mol/(m·s·Pa0.5),并具有较好的抗氢脆性能,在473 K以上未发生氢脆破裂,高熵合金独特的“四大效应”使其实现了渗氢性能和抗氢脆性能的同步提高。 |
| 关键词: 铌基合金 高熵合金 显微组织 成分优化 渗氢性能 抗氢脆性能 |
| DOI：10.11951/j.issn.1005-0299.20240249 |
| 分类号:TG1464+16 |
| 文献标识码:A |
| 基金项目: |
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| Microstructures and hydrogen permeability properties of the novel NbTiCoNiX (X=Mo,V,Fe) high-entropy alloys |
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ZHANG Yue1,QU Shimin2,SUN Chen1,Lü Liangliang2,YANG Mucun1,ZHENG Wei2,CUI Chong1,LU Yanghui1,LIU Wei1,WEI Mingxing3,LIU Tong3
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(1.State Power Investment Corporation Science and Technology Research Institute Co., Ltd., Beijing 102200, China; 2.Inner Mongolia Huomei Hongjun Aluminum Electric Co., Ltd., Holingola 029200, China; 3.School of Materials Science and Engineering, Beihang University, Beijing 100191, China)
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| Abstract: |
| Safe and efficient hydrogen separation and purification technology is the key to the development of the hydrogen energy industry. The hydrogen embrittlement resistance of existing ⅤB group metals and their alloys is generally poor; thus, the hydrogen separation alloy with a high hydrogen permeability coefficient and excellent hydrogen embrittlement resistance is urgently demanded. In this work, we independently proposed the design concept of high-entropy hydrogen permeation alloys and prepared NbTiCoNiX (X=Mo,V,Fe) high-entropy alloys by using a vacuum water-cooled copper crucible arc melting furnace. The phase structure and microstructure of three high-entropy hydrogen permeation alloys were characterized by XRD and SEM. Meanwhile, the hydrogen permeability coefficient and hydrogen embrittlement resistance of three alloys were tested by the self-developed hydrogen permeation performance measuring equipment. The results show that the NbTiCoNiX (X=Mo,V,Fe) high-entropy alloys exhibit a biphasic structure, consisting of BCCNb |
| Key words: Nb-based alloys high-entropy alloys microstructure composition optimization hydrogen permeability hydrogen embrittlement resistance 〖FQ(+30mm。23,ZX-WZ〗收稿日期: 20241120. 网络出版日期: 20250421. 基金项目: 国家电力投资集团有限公司科研项目(KYB12022QN02). |
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