Sintering of LixNi1−xO solid solutions at 750 °C

Liquid phase sintering of Li x Ni 1 − x O solid solutions with x = 0.30 and 0.44, obtained by the reaction of a nickel and lithium carbonate powder mixture, was evaluated by means of the shrinkage of the specimens. Only when part of the Li x Ni 1 − x O crystalline structure was present as the hexagonal phase, the presence of a reactive liquid phase of undecomposed lithium carbonate promoted the sintering process.