A ternary phase in Cu-Li-Mg system

• Tipo: Artigo em Revista Científica Internacional
• Data: 2007

Autores

M. H. Braga (Autor) FEUP; J. Ferreira (Autor) Outra; L. F. Malheiros (Autor) FEUP

Revista

Título: Journal of Alloys and Compounds

Vol. 436 Nº 1-2

Páginas: 278-284

ISSN: 0925-8388

Editora: Elsevier

Indexação

ISI Web of Knowledge - 4 Citações

ISI Web of Science

Scopus - 4 Citações

COMPENDEX

INSPEC

Classificação Científica

FOS: Ciências exactas e naturais > Física

CORDIS: Ciências Físicas > Física

Outras Informações

ID Authenticus: 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.

Idioma: Inglês

Tipo (Avaliação Docente): Científica