Research on Hydrogen-Storage Amorphous and Nano-structured Alloys

储氢非晶及纳米结构合金研究

• 批准号: 07555476
• 负责人: TANAKA Kazuhide
• 金额: $ 0.9万
• 依托单位: Nagoya Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07555476/
• 关键词: Hydrogen storage; Amorphous; Nanocrystalline; Multilayrs; Nd-Fe (Co) -B; Mg-Ni-La (Nd); Absorbing kinetics; PCT characteristics; Mg-Ni-La系; Mg-Ni-Na系; 液体急冷法; ナノ結晶; 水素放出スペクトル; X線構造解析; 吸蔵放出速度; 水素; 希土類; 結晶化

The objective of this research is to find novel hydrogen-storage alloys with amorphous as well as nanocrystalline structures, and to investigate their hydrogen storage properties. In addition, effects of hydrogenation on the structural change or stability of metallic multilayrs have also been studied.1. Hydrogen absorption in amorphous alloys Binary and ternary alloys containing transition metals and/or rare earths have been investigated. Alloys of Nd-Fe, Nd-Fe-B and Nd-Co-B systems with 5-30 at.%Nd have been studied in detail, and relationships between the hydrogen-storage ability and atomistic structures of the amorphous alloys have been revealed. Furthermore, amorphous alloys of Zr-Ni-V and Zr-Ni-Nballoys with 25-35 aat.%Zr and 5-25 at.%V and Nb have been studied. We succeeded in producing several amorphous alloys with good hydrogen-storage ability and structural stability, but their hydrogen absorbing and desorbing kinetics below 373K were not fast enough in comparison with those o … More f conventional intermetallic compounds and deserve further investigation.2. Hydrogen absorption in nanocrystalline alloys Alloys of Mg-Ni, Ng-Ni-La and Mg-Ni-Nd systems have been mainly studied. Nanocrystalline structures of these alloys with grain sizes of 50-100 nm have been obtained by annealing melt-spun amorphous alloys at temperatures just above the respective crystallization temperatures. These nanocrystalline alloys exhibit faster hydrogen absorbing kinetics and better PCT characteristics than the corresponding as-cast alloys with coarse grains. With further improvements, they will be used as practical hydrogen storage materials operative at 473-573K.3. Structure stabilization of metallic multilayrs by hydrogenation In the course of study of hydrogen absorption in metallic multilayrs such as Pd/Ti, Ni/Ti and Fe/Ti, we found that the multilayr structures are thermally stabilized by hydrogenation up to about 723K.Without hydrogenation, they should undergo interlayr mixing to form homogeneous equilibrium intermetallic phases. This stabilization is attributed to the transformation of Ti layrs into TiH_2, and may be applicable to multilayr technologies. Less

本研究的目的是寻找具有非晶和纳米晶结构的新型贮氢合金，并研究其贮氢性能。此外，还研究了氢化对金属多层膜结构变化或稳定性的影响.非晶态合金吸氢研究了含过渡金属和/或稀土的二元和三元合金。5-30原子%的Nd-Fe、Nd-Fe-B和Nd-Co-B系合金研究了Nd对非晶合金的储氢性能的影响，揭示了非晶合金的原子结构与储氢性能的关系。此外，还制备了Zr-Ni-V和Zr-Ni-N非晶合金球，其球化率为25-35 aat.%，Zr和5-25原子% V和Nb进行了研究。我们成功地制备了几种具有良好贮氢能力和结构稳定性的非晶合金，但它们在373 K以下的吸放氢动力学与常规的非晶合金相比不够快。 ...更多信息 传统的金属间化合物，值得进一步研究.本文主要研究了Mg-Ni系、Ng-Ni-La系和Mg-Ni-Nd系纳米晶合金的吸氢性能。这些合金的纳米晶结构的晶粒尺寸为50-100 nm，已获得通过退火的熔体旋转的非晶合金在温度刚刚高于各自的结晶温度。这些纳米晶合金表现出更快的吸氢动力学和更好的PCT特性比相应的铸态合金与粗晶粒。通过进一步的改进，它们将被用作在473- 573 K工作的实用储氢材料。氢化稳定金属多层膜的结构在研究Pd/Ti、Ni/Ti和Fe/Ti等金属多层膜的吸氢过程中，我们发现在723 K左右氢化使多层膜结构热稳定，而不氢化时，多层膜结构发生层间混合，形成均匀的平衡金属间化合物相。这种稳定性归因于Ti层向TiH_2的转化，并可能适用于多层技术。少

项目成果

H.Itoh, O.Yoshinari, K.Tanaka: "Srudy of Hydrogen Storage in Ma2Ni by Thermal Desorptin Spectrometry" J.Alloys Comp.231. 483-487 (1995)

H.Itoh、O.Yoshinari、K.Tanaka：“通过热解吸光谱法研究 Ma2Ni 中的氢储存”J.Alloys Comp.231。

K.Tanaka: "Structures, Properties and Hydrogen Absorption in Amorphous Nd-Fe (Ni, Co) -B Alloys" Research Reports of JCPS,Amorphous and Nanostructure Materials. No.50. 23-33 (1995)

K.Tanaka：“非晶Nd-Fe(Ni,Co)-B合金的结构、性能和吸氢”JCPS、非晶和纳米结构材料研究报告。

K.Tanaka: "Hydrogen Storage Properties of Amorphous and Nauocry stdline Allogs" Proc.4th Special Symposium on Aduavced Materals. (印刷中). (1998)

K.Tanaka：“非晶态和 Nauocry 标准同系物的储氢性能”Proc.4th Special Symposium on Aduavced Materials（正在出版）。

田中 一英: "水素吸蔵合金-基礎から先端技術まで-" エヌ・ティー・エス(印刷中), (1998)

Kazuhide Tanaka：“储氢合金 - 从基础知识到先进技术”NTS（印刷中），（1998 年）

K.Tanaka: "Microstructures of Pd/Ti and Ni/Ti multilayers subjected to annealing in Vacuum or hydrogen atmosphere" Proc.Intern.Conf.on Microstructures and Functions of Materials. 59-62 (1996)

K.Tanaka：“在真空或氢气气氛中退火的 Pd/Ti 和 Ni/Ti 多层的微观结构”Proc.Intern.Conf.on 材料的微观结构和功能。