Effect of the oxygen in the evolution of the microstructure in a Cu–18 at.% Li alloy

PÉREZ-LANDAZÁBAL, IÑAQUI; LAMBRI, OSVALDO; PEÑALOZA, AUGUSTO; RECARTE, VICENTE; CAMPO, J.; SALVATIERRA, LUCAS; HERRERO, OSVALDO; ORTIZ, MANUEL; MILANI, LIVIO; WÖRNER, CARLOS

MATERIALS LETTERS

Elsevier B. V.

Lugar: Amsterdam, NH; Año: 2002 vol. 56 p. 709 - 715

0167-577X

The evolution of the microstructure in a Cu–18 at.% Li alloy as a function of temperature has been studied through thermogravimetry (TGA), neutron diffraction (ND) and X-ray diffraction (XRD) studies. The studied alloy was in the form of powders obtained by an electrodeposition process. The alloy oxidation during heating in air plays a very interesting behaviour giving rise to the decrease in the lithium content in solid solution in the alloy. In fact, the oxidation of the alloy from about 600 K leads simultaneously to the reduction in the lithium content in solid solution and to the appearance of lithium dioxide, Li2O2, and copper oxides, Cu2O, in the alloy.