In-situ neutron powder diffraction study of Mg–Zn alloys during hydrogen cycling. (6th July 2015)

• Record Type: Journal Article
• Authors: Webb, T.A.; Webb, C.J.; Dahle, A.K.; Gray, E. MacA.
• Is Part Of: International journal of hydrogen energy. Volume 40:Number 25(2015)
• Page Start: 8106
• Page End: 8109
• Publication Date: 2015-07-06
• Subjects: Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2015.03.170
• Languages: English
• ISSNs: 0360-3199

Abstract

<abstract xml:lang="en" abstract-type="author" id="abs0010"> <title id="sectitle0010">Abstract</title> <sec> <p id="abspara0010">An <italic>in-situ</italic> structural study of three Mg–Zn samples with nominal composition Mg_0.9963Zn_0.0037, Mg_0.89Zn_0.11 and Mg_0.73Zn_0.27 was performed using neutron diffraction to investigate what phases are formed during the hydrogen absorption process. It was found that at the temperatures needed for reasonable kinetics, a Mg–Zn liquid phase was present. This aspect of the reaction mechanism has not been revealed by previous <italic>ex-situ</italic> investigations in the literature. The only hydride formed was tetragonal MgH₂. No Mg–Zn–H hydride phase was found and the Zn did not appear to play any part in the reaction.</p> </sec> </abstract>