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金属学报  1998 

EFFECT OF Ti ON THE MICROSTRUCTURE AND ELECTROCHEMICAL PROPERTIES OF Zr-Mn-V-Ni ALLOYS
Ti对Zr—Mn—V—Ni系合金的微结构和电化学性能的影响

Keywords: electrochemical properties,Laves phases,Zr-Ni compound,Ti-containing bcc phase
电化学性能
,贮氢合金,微结构,

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Abstract:

The Zr-Ni intermetallic compounds coexist with Laves phase in the Zr-Mn-V-Ni alloy. Zr0.5Ti0.5Mn0.2Vo.6Ni1.2 alloy accommodates C14 Laves phase and Ti containing bcc phase. Selected area electron diffraction (SAED) and energy dispersive spectrum (EDS) analysis show the bcc phase was B2 type R phase (Ti0.8Zr0.2)Ni. The lattice parameters and substructure of Laves phase in ZrMn0.2V0.6Ni1.2 alloy varied after Ti substitution for Zr. Formation of non-Laves phases causes the alloying elements redistribution among the coexisting phases. The change of electrochemical properties of Zr0.5Ti0.5Mn0.2V0.6Ni1.2 can be attributed to the Ti substitution for Zr site in C14 laves phase, the formation of (Ti0.8Zr8.2)Ni phase and disappearance of Zr-Ni binarg compound.

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