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Alternative TitlePreparation and Characterization of Hydrogen Permeable Nb-Based Alloys
Luo Weimin (罗伟民); Yan Changfeng (闫常峰); Ishikawa, Kazuhiro; Aoki, Kiyoshi
Contribution Rank[Luo Weimin (罗伟民); Yan Changfeng (闫常峰)] China Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China; [Ishikawa, Kazuhiro; Aoki, Kiyoshi] Kitami Inst Technol, Kitami, Hokkaido 0908507, Japan
Corresponding AuthorLuo, WM (reprint author), China Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China.
Cooperation Status国际
Other AbstractPd-Ag alloy shows high hydrogen permeability and excellent resistance to hydrogen embrittlement, so it is used to separate the products of methane steam reforming to achieve high purity hydrogen. However, Pd is very expensive; therefore it is eagerly desired to develop no-Pd based alloys with low cost and high hydrogen permeation performance. In order to find out Nb-Ti-Ni alloy with higher hydrogen permeability, the Nb-Ti-Ni alloys located at the straight line connecting the primary (Nb, Ti) of Nb40Ti30Ni30 and the eutectic {(Nb,Ti)+TiNi} phases in the Nb-Ti-Ni trinary diagram were prepared. Results show that the alloys located at the straight line consists of the primary (Nb, Ti) and the eutectic {(Nb,Ti)+TiNi} phases, and their hydrogen permeability increase with increasing of Nb content or volume fraction of the primary (Nb,Ti). Moreover, the Nb content increases to 68 mol%. The Nb68Ti17Ni15 alloy, consisting of 74 vol% primary (Nb, Ti) phase and 26 vol% eutectic {(Nb,Ti)+TiNi} phase, show the highest Phi(673K) of 4.91 x 10(-8) mol H(2)m(-1)s(-1)Pa(-0.5), which is 2.5 times as high as that of the Nb40Ti30Ni30, and 3.5 times as high as that of the pure Pd.

在Nb40Ti30Ni30 合金的初生相(Nb,Ti)和共晶相连线上制作Nb-Ti-Ni 合金。研究表明,上述直线上的合金由初生相和共晶相构成,氢渗透度Φ随Nb 浓度和初生相(Nb,Ti)体积分数的增大而升高,氢渗透合金的Nb 浓度扩展至68 mol%。Nb68Ti17Ni15 合金由74%(体积分数)的初生相(Nb,Ti)和26%(体积分数)的共晶相{(Nb,Ti)+TiNi}组成,氢渗透度最大Φ673 K达到4.91×10-8mol H2m-1s-1Pa-0.5,是Nb40Ti30Ni30 合金的氢渗透度Φ673 K 的2.5 倍,纯钯金的氢渗透度Φ673 K 的3.5 倍。
KeywordHydrogen Permeable Alloy Nb-based Alloy Hydrogen Permeability Microstructure Permeation Characteristics Membranes Separation 氢渗透合金 Nb基合金 氢渗透度 微观组织
Subject AreaMaterials Science ; Metallurgy & Metallurgical Engineering
Indexed BySCI ; CSCD
Funding Organization广东省自然科学基金资助项目(8451007006000933); 广东省关键领域重点突破科技计划项目(20070109-1 & 2007A010701001);广州市科技计划项目(2006J1-C0421)
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Document Type期刊论文
Recommended Citation
GB/T 7714
Luo Weimin (罗伟民),Yan Changfeng (闫常峰),Ishikawa, Kazuhiro,等. 氢气渗透Nb基合金的设计及特性表征[J]. RARE METAL MATERIALS AND ENGINEERING,2010,39(6):5,1045-1049.
APA Luo Weimin ,Yan Changfeng ,Ishikawa, Kazuhiro,&Aoki, Kiyoshi.(2010).氢气渗透Nb基合金的设计及特性表征.RARE METAL MATERIALS AND ENGINEERING,39(6),5,1045-1049.
MLA Luo Weimin ,et al."氢气渗透Nb基合金的设计及特性表征".RARE METAL MATERIALS AND ENGINEERING 39.6(2010):5,1045-1049.
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