The linear shrinkagegwas calculated according to the expression:g=(dod)/do, wheredoanddare the diameters of a sample before and after the sintering, respectively. The densityrof the sintered samples was calculated according to the expressionr=m/V, where mis the mass found from
the weighting of a sample in air and Vis the volume of a sample. The relative density was defined asr/r0, where r0 is the theoretical density. For ZnO–Ag the theoretical
density was calculated taking into account the chemical composition before the sintering. For pure ZnO the value ro=5.66 g cm3 was used