Synthesis and hydrogen absorption kinetics of V4Cr4Ti alloy

V 4 Cr 4 Ti alloy is synthesized by aluminothermy process followed by electron beam refining. Hydrogen absorption characteristics of the alloy have been evaluated by measuring the pressure composition isotherm (PCIT) at 57 °C temperature. Two plateau pressures are observed in the PCIT curve. Substan...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Veröffentlicht in:	Journal of thermal analysis and calorimetry 2013-04, Vol.112 (1), p.51-57
Hauptverfasser:	Kumar, Sanjay, Taxak, Manju, Krishnamurthy, Nagaiyar
Format:	Artikel
Sprache:	eng
Schlagworte:	Analytical Chemistry Calorimetry Chemistry Chemistry and Materials Science Diffusion Hydrogen storage Inorganic Chemistry Isotherms Mathematical analysis Measurement Science and Instrumentation Physical Chemistry Polymer Sciences Refining Synthesis Three dimensional
Online-Zugang:	Volltext
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	V 4 Cr 4 Ti alloy is synthesized by aluminothermy process followed by electron beam refining. Hydrogen absorption characteristics of the alloy have been evaluated by measuring the pressure composition isotherm (PCIT) at 57 °C temperature. Two plateau pressures are observed in the PCIT curve. Substantial decrease in the hydrogen absorption capacity of the alloy as compared to vanadium has been recorded. Hydrogen absorption kinetics of the alloy was investigated in the temperature range of 200–500 °C. Three-dimensional diffusion appears to be the rate controlling step of the hydrogen absorption. The apparent activation energy was calculated as 0.16 eV/atom-hydrogen.
ISSN:	1388-6150 1588-2926 1572-8943
DOI:	10.1007/s10973-012-2643-5