The effect of presynthesized powder additives in combined synthesis and sintering of SrZrO3 ceramics

it is demonstrated that adding presynthesized powder to the initial SrCO3 and ZrO2, mixed in a stoichiometric ratio to produce SrZrO3 and combining synthesis with sintering yields denser ceramics than without such additive. This is due to the decreased degree of nonequilibrium of the process of preform consolidation as a consequence of a certain increase in friction between the particles and a decreased probability of local compactions. The effect of increasing internal fraction at the bifurcation point is comparable to the effect of external disturbances and internal fluctuations (noises), which is responsible for the instability of results.