Reactions of zirconium-rich alloys of the zirconium-nickel and zirconium-nickel-lanthanum systems with hydrogen

Journal Article · Mon Oct 20 04:00:00 EDT 1986 · J. Gen. Chem. USSR (Engl. Transl.); (United States)

OSTI ID:5293925

Fokin, V N; Troitskaya, S L; Semenenko, K N

In the reactions of alloys in the Zr-Ni and Zr-Ni-La systems with hydrogen the conditions for the hydridation of zirconium present in the alloys of the Zr-Ni system are determined by the amount of Zr/sub 2/Ni in the alloy. However, the presence of lanthanum in alloys of the Zr-Ni-La systems also has an appreciable influence on the conditions required for the hydridation of zirconium, leading to the possibility of preparing ZrH/sub 2/ at room temperature under a pressure of 3-4 MPa in presence of the compound Zr/sub 2/Ni and La in the course of 5-10 min. The reaction of hydrogen with the intermetal compound Zr/sub 2/Ni was investigated. The hydridation of Zr/sub 2/Ni at 20/sup 0/C under a hydrogen pressure of 3.5 MPa is accompanied by the partial hydrogenolysis of the compound with the formation of ZrH/sub 2/. When the synthesis is conducted at 20/sup 0/C under conditions of hydrogen deficiency the hydride phase Zr/sub 2/NiH/sub 4.9/ is formed

• Research Organization: Institute of New Chemical Problems, Chernogolovka (USSR)
• OSTI ID: 5293925
• Journal Information: J. Gen. Chem. USSR (Engl. Transl.); (United States), Journal Name: J. Gen. Chem. USSR (Engl. Transl.); (United States) Vol. 56:5; ISSN JGCHA
• Country of Publication: United States
• Language: English

Related Subjects

08 HYDROGEN
080201* -- Hydrogen-- Chemisorption Storage
36 MATERIALS SCIENCE
360102 -- Metals & Alloys-- Structure & Phase Studies
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
ALLOY SYSTEMS
ALLOYS
BINARY ALLOY SYSTEMS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHEMISORPTION
COHERENT SCATTERING
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTALLIZATION
DIFFRACTION
ELEMENTS
HYDRIDATION
HYDRIDES
HYDROGEN
HYDROGEN COMPOUNDS
HYDROGEN STORAGE
INTERMETALLIC COMPOUNDS
KINETICS
LANTHANUM ALLOYS
LANTHANUM COMPOUNDS
LANTHANUM HYDRIDES
LATTICE PARAMETERS
NICKEL ALLOYS
NICKEL COMPOUNDS
NICKEL HYDRIDES
NONMETALS
OPTIMIZATION
PHASE TRANSFORMATIONS
RARE EARTH ALLOYS
RARE EARTH COMPOUNDS
REACTION KINETICS
SCATTERING
SEPARATION PROCESSES
SORPTION
SPACE GROUPS
STORAGE
TERNARY ALLOY SYSTEMS
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION
ZIRCONIUM ALLOYS
ZIRCONIUM COMPOUNDS
ZIRCONIUM HYDRIDES