Published July 2003 | Version v1
Journal article Metadata-only

Influence of aluminium and tin on the mechanism of hydridation of LaNi5-based intermetallic compounds

Creators

  • 1. Moskovskij Gosudarstvennyj Univ. im. M.V. Lomonosova, Moscow (Russian Federation)

Description

Interaction of hydrogen with intermetallides LaNi5-xMx (M=Al, x=0.1, 0.25; M=Sn, x=0.1, 0.2) was studied using the calorimetric titration technique. Based on the formal kinetic approach and x-ray diffraction data a probable mechanism was proposed for hydrogenation of the intermetallides studied in the temperature range of 308-353 K. It is shown that formation of α-solid solution phase in all the intermetallide-hydrogen systems studied takes place according to a similar mechanism, while the mechanism of β-hydride phase nucleation and growth changes dramatically when the content of the main group metal increases

Abstract (Russian)

С помощью методики калориметрического титрования изучено взаимодействие водорода с интерметаллидами (ИМ) на основе LaNi5-xMx (M=Al, x=0.1, 0.25; M=Sn, x=0.1, 0.2). На основе формально-кинетического подхода и результатов рентгенофазового анализа предложен механизм гидрирования исследованных ИМ в интервале температур 308-353 К. Показано, что образование фазы α-твердого раствора во всех исследованных системах ИМ - водород протекает по сходному механизму, а механизм образования и роста зародышей β-гидрида кардинальным образом изменяется при повышении содержания непереходного металла

Additional details

Additional titles

Original title (Russian)
Влияние алюминия и олова на механизм гидрирования интерметаллидов на основе LaNi

Publishing Information

Journal Title
Izvestiya Akademii Nauk. Rossijskaya Akademiya Nauk. Seriya Khimicheskaya
Journal Issue
no.7
Journal Page Range
p. 1397-1401
ISSN
1026-3500
CODEN
IASKEA

INIS

Country of Publication
Russian Federation
Country of Input or Organization
Russian Federation
INIS RN
37037179
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
ALUMINIUM ALLOYS; CHEMICAL REACTION KINETICS; CONCENTRATION RATIO; HYDRIDATION; HYDRIDES; INTERMETALLIC COMPOUNDS; LANTHANUM ALLOYS; NICKEL BASE ALLOYS; PHASE STUDIES; SOLID SOLUTIONS; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0273-0400 K; TERNARY ALLOY SYSTEMS; TIN ALLOYS
Descriptors DEC
ALLOY SYSTEMS; ALLOYS; CHEMICAL REACTIONS; DIMENSIONLESS NUMBERS; DISPERSIONS; HOMOGENEOUS MIXTURES; HYDROGEN COMPOUNDS; KINETICS; MIXTURES; NICKEL ALLOYS; RARE EARTH ALLOYS; REACTION KINETICS; SOLUTIONS; TEMPERATURE RANGE; TRANSITION ELEMENT ALLOYS

Optional Information

Notes
17 refs., 4 figs., 3 tabs.