Volumetric properties of the Li₂Ca intermetallic alloy in solid and liquid states

The density and thermal expansion coefficients of the Li₂Ca intermetallic alloy were measured in the temperature range of 284 – 906 K for the solid and liquid states by gamma-ray attenuation technique. The density jump of the Li₂Ca intermetallic alloy was also measured during the solid – liquid phase transition. Data on the volumetric properties of the alloy at above room temperature were apparently obtained for the first time. A table of recommended values of the volumetric properties of the Li₂Ca alloy over the entire measurement range is presented and their errors are estimated. It is confirmed that the Li – Ca melt with a calcium content of 33.33 at. % is an almost ideal solution.