A ternary phase in Cu-Li-Mg system

• Type: Article in International Scientific Journal
• Date: 2007

Authors

M. H. Braga (Author) FEUP; J. Ferreira (Author) Other; L. F. Malheiros (Author) FEUP

Journal

Title: Journal of Alloys and Compounds

Vol. 436 No. 1-2

Pages: 278-284

ISSN: 0925-8388

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 4 Citations

ISI Web of Science

Scopus - 4 Citations

COMPENDEX

INSPEC

Scientific classification

FOS: Natural sciences > Physical sciences

CORDIS: Physical sciences > Physics

Other information

Authenticus ID: P-004-9CT

DOI: 10.1016/j.jallcom.2006.07.023

Abstract (EN): A previous study on Cu¿Li¿Mg system pointed out the existence of Cu8Li2Mg15, with an orthorhombic structure. The authors of the present paper also detected the existence of a ternary phase similar to the one mentioned. Due to some doubts on the phase¿s structure, a study of Cu¿Li¿Mg was focused in an area near to the composition of that phase. SEM/EDS measurements of the phases¿ compositions in equilibrium, as well as XRD powder patterns were obtained at room temperature. It was concluded that the ternary phase in Cu¿Li¿Mg system corresponds to CuMg2¿xLix (x¿0.11), with a hexagonal structure, space group P6222 (1 8 0), and lattice parameters a = b = 0.5260 nm, and c = 1.3649 nm. The structure was refined by Rietveld method; a Bragg reliability factor RB = 6.36% was obtained. Similarities between CuMg2¿xLix (x¿0.11) and NiMg2(H, D)x (x¿0.3) structures are detailed.

Language: English

Type (Professor's evaluation): Scientific