Impact of Substitution of M (M=Mn, Cu) for Ni on Hydriding and Dehydriding Kinetics of as-Spun Nanocrystalline and Amorphous Mg2Ni-Type Alloys

Yang Huan Zhang; Hui Ping Ren; Bao Wei Li; Zhong Hui Hou; Guo Fang Zhang; Dong Liang Zhao

doi:10.4028/www.scientific.net/AMR.608-609.1347

Paper Titles

Study on Composite of Porous Si and Disordered Carbon as Anode Materials for Lithium Ion Batteries
p.1327

Excess Heat Triggered by Electrical Current in a D/Pd Gas-Loading System
p.1331

Preparation of Silicalite-1 Membranes on α-Al₂O₃ Tubes and its Concentration Performance of Low Ethanol/water Mixtures
p.1337

Effect of Synthesis Process of Polyaniline for the Zn-PANi Secondary Batteries
p.1342

Impact of Substitution of M (M=Mn, Cu) for Ni on Hydriding and Dehydriding Kinetics of as-Spun Nanocrystalline and Amorphous Mg₂Ni-Type Alloys
p.1347

Preparation of PET/PT Composite Film and Study of its Moisture Barrier Properties
p.1351

Luminescent Layer by Layer Thin Films Based on Polyoxometalate and Poly(amidoamine) Dendrimer
p.1354

Preparation of Conductive Response Polyaniline/Polyurethane Orderde Array Thin Film
p.1359

Effects of Annealing in N₂ and Air after CdCl₂ Treatment on the Properties of CdS Thin Films
p.1363

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 608-609Impact of Substitution of M (M=Mn, Cu) for Ni on...

Impact of Substitution of M (M=Mn, Cu) for Ni on Hydriding and Dehydriding Kinetics of as-Spun Nanocrystalline and Amorphous Mg₂Ni-Type Alloys

Abstract:

The Ni was partially substituted by M (M=Co, Cu) in order to ameliorate the hydriding and dehydriding kinetics of Mg2Ni-type alloy. The melt spinning technology was used to prepare the Mg20Ni10-xMx (M=Mn, Cu; x=0, 1, 2, 3, 4) alloys. The structures of the as-spun alloys were characterized by XRD and TEM. The hydriding and dehydriding kinetics of the alloys were measured by an automatically controlled Sieverts apparatus. The results show that the as-spun (M=Mn) alloys hold a nanocrystalline and amorphous structure, whereas the as-spun (M=Cu) alloys display an entire nanocrystalline structure, indicating that the substitution of Mn for Ni facilitates the glass formation in the Mg2Ni-type alloy. Additionally, Mn substitution incurs the formation of secondary phases MnNi and Mg instead of changing the Mg2Ni major phase. The hydriding kinetics of the as-spun alloys first mounts up and then declines with the rising of M (M= Mn, Cu) content, whereas the substitution of M (M=Mn, Cu) for Ni enhances the dehydriding kinetics of the alloy dramatically.