Thermodynamics of processes of hydrogen sorption by hydrides of intermetallic compounds of CrB structural type

The intermetallic compounds (IMCs) HfNi, ZrNi, HfCo and ZrCo are studied by thermoanalytical methods. The thermodynamic characteristics calculated from the van't Hoff equation and obtained by the calorimetric method are compared with literature data. The dependence of the partial molar enthalpy...

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Bibliographic Details
Published in:Journal of alloys and compounds 1991-12, Vol.177 (1), p.1-15
Main Authors: Nemirovskaya, I.E., Alekseev, A.M., Lunin, V.V.
Format: Article
Language:English
Subjects:
Applied sciences
Condensed matter: structure, mechanical and thermal properties
Exact sciences and technology
Metals. Metallurgy
Physics
Thermal properties of condensed matter
Thermal properties of crystalline solids
Thermodynamic properties
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Summary:The intermetallic compounds (IMCs) HfNi, ZrNi, HfCo and ZrCo are studied by thermoanalytical methods. The thermodynamic characteristics calculated from the van't Hoff equation and obtained by the calorimetric method are compared with literature data. The dependence of the partial molar enthalpy on the IMC hydrogen content has a tendency to decrease with increasing hydrogen content in the a solution region; in the region near the α-( α+ β) and ( α+ β)- β boundaries there is a discontinuity; in the region of twophase coexistence ΔH H does not depend on the IMC hydride hydrogen content; during the formation of a new phase (monohydride, β hydride) ΔH H increases.
ISSN:0925-8388
1873-4669
DOI:10.1016/0925-8388(91)90052-W