Effects of Rare-Earth Content on the Properties of Co-Free MmxMl1-x(NiCuAlZn5)Hydrogen Storage Alloys

Yi Jing Wang; Huatang Yuan

doi:10.4028/www.scientific.net/MSF.475-479.2517

Paper Titles

Investigation of Cobalt-Free AB₅-Type Hydrogen Storage Alloy
p.2501

High-Temperature Characteristics of Melt-Spun Hydrogen Storage Alloys
p.2505

Property Changes of Some Hydrogen Storage Alloys upon Hydrogen Absorption-Desorption Cycling
p.2509

Hydrogen Diffusion in Ti-Cr Hydrogen Absorption Alloys by Tritium Radioluminography
p.2513

Effects of Rare-Earth Content on the Properties of Co-Free Mm_xMl_1-x(NiCuAlZn₅)Hydrogen Storage Alloys
p.2517

Synthesis and Crystal Structure of New Hydrides in Mg-RE Systems under High-Pressure (RE = La, Ce, Pr)
p.2521

Centrifugal Casting Practice and Microstructure and Mechanical Properties of a 2205 Duplex Stainless Steel
p.2527

Determination of Die Design Rules for Semi-Solid Die Casting Process and Its Experimental Investigation
p.2533

Effect of Alloying Elements on the Strength and Casting Characteristics of High Strength Al-Zn-Mg-Cu Alloys
p.2539

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Effects of Rare-Earth Content on the Properties of Co-Free Mm_xMl_1-x(NiCuAlZn₅)Hydrogen Storage Alloys

Abstract:

MmxMl1-xNi4.14Cu0.5Al0.3Zn0.06 (Mm=Ce-rich misch-metal, Ml=La-rich misch-metal, x=0, 0.2, 0.4, 0.6, 0.8, 1) alloys have been synthesized by the inter-media alloy method. The properties of these alloys have been systematically investigated by means of X-ray diffraction (XRD), pressure-composition isotherms (PCT), electrochemical impendence (EIS) and cyclic voltammogram (CV). The X-ray diffraction results indicated that these alloys had a CaCu5-type hexagonal crystal structure. With increasing the Mm content, the plateau pressure and volume expansion of their hydrides were increased, but the volume of unit was decreased.