Abstract
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, Li 2O 2, and copper oxides, Cu 2O, in the alloy.
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