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Mg2NiH4,同时还保留大量的非晶结构.循环伏安测试结果显示较明显的氧化峰和还原峰,且峰电位差较小,反映电极合金具有较好的吸放氢反应的可 逆性. 关键词:Mg-Ni-La系贮氢合金;微观结构;电化学性能;熔体快淬 中图分类号:TG 139.7 文献标识码:A Effects of melt-spinning velocity...-storage (Mg70.6Ni29.4)92La8 alloys were prepared by melt-spinning. The effects of velocities of cooling roll on the microstructures and electrochemical properties for the as-quenched ribbons were......
Microstructure and Electrochemical Characteristics of Melt-Spinning Alloy Ml(NiCoMnAl)5 ZHAI Yu-chun1,CHEN Lian2,Tong Min2,WEN Ming-fen3,CHEN De-min2 (1.Department of Materials and Metallurgy... characteristics of Ml(NiCoMnAl)5 alloys prepared by both the melt-spinning method and the conventional induction melting were investigated and compared. SEM and XRD studies show that the microstructure of melt......
Single phase A2B7-type La-Mg-Ni alloy with improved electrochemical properties prepared by melt-spinning and annealingYiming Li,Zhuocheng Liu,Guofang Zhang,Yanghuan Zhang,Huiping RenKey Laboratory of Integrated Exploitation of Bayan Obo Multi-Metal Resources,Inner Mongolia University of Science and Technology摘 要:La-Mg-Ni alloys were prepared by melt......
Single phase A2B7-type La-Mg-Ni alloy with improved electrochemical properties prepared by melt-spinning and annealingYiming Li,Zhuocheng Liu,Guofang Zhang,Yanghuan Zhang,Huiping RenKey Laboratory of Integrated Exploitation of Bayan Obo Multi-Metal Resources,Inner Mongolia University of Science and Technology摘 要:La-Mg-Ni alloys were prepared by melt......
Preparation and Magnetic Properties of Melt-Spinning Nd2Fe14B/α-Fe Nanocomposite Magnets 李强1,倪建森1,王占勇1,徐晖1,王伟1,周邦新1 (1.Institute of Materials,Research Center of Nano-Science and Nano-Technology,Shanghai University,Shanghai 200072,China) Abstract:Nd11Fe71Co8V1.5Cr1B7.5 magnet was prepared by melt-spinning and subsequently annealed. The effects of the wheel speed on the magnetic properties......
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Cu-Cr体系的一些凝固规律和凝固参数. 关键词: CuCr合金; 凝固模拟; 快速凝固; 熔体快淬 中图分类号: TG146.1 文献标识码: A Numerical simulation of single roller melt-spinning for solidification process of Cu-Cr alloy WANG You-hong1, 2, SUN...: The numerical simulation model of single roller melt-spinning for solidification process of Cu-25%Cr alloy was built, and the vacuum chamber, cooling roller and sample were taken into account......
alloys were prepared by melt-spinning. The phase structures of the ribbons before and after charge/discharge cycling were characterized by X-ray diffractometry (XRD) and high-resolution transmission... has no significant change. Key words: Mg-Ni-La hydrogen-storage alloy; microstructure; electrochemical property; melt-spinning 镁基储氢合金理论储氢容量高达7.6%,电化学容量达1000 mA·h/g,拥有储氢量大,密度低,含量丰富和价格低廉等优点.近10年来,尽管镁基贮......
rate on phase transformation of Ni-Mn-Ga melt-spinning alloys GUO Shi-hai, ZHANG Yang-huan, WANG Guo-qing,QI Yan, QUAN Bai-yun, WANG Xin-lin (Functional Material Research Institute,Central Iron and Steel Research Institute, Beijing 100081, China) Abstract: Ni-Mn-Ga ribbons were prepared by melt-spinning technology. The effects of quenching rates on phase transformation of Ni-Mn-Ga melt......
; accepted 30 June 2006 Abstract: The preparation technology and magnetic properties of Nd9.5Fe77B6Co5Zr2.5 nanocomposite magnets were investigated by melt spinning and crystallization process. The nonuniform composition and grain size can be induced by nanocomposite magnet prepared by arc-melt-spinning process, which will decrease the magnetic properties. These can be avoided by modification......