The means and standard deviations of the true density measurements are listed in Table 3. The differences of the true densities correspond to different amounts of aluminum titanate due to its exceptionally low density in the AZT system.
Table 4 shows that Eperezolid the factors ST and TS as well as the interactions CR with ST and the three factor interaction had significant effects on the true density. The means of the levels of these factors were compared in Table 6. With increasing sintering temperature the true density decreased due to a growing amount of aluminum titanate before and after thermal shock. This means also that the increased stabilization observed by EDX led to a reduced decomposition. Consequently, the catabolic reactions stabilizing effect of the solid solutions was superior to the effect of the zirconia because the zirconia amount was the same for all samples and could not cause the differences.
Table of means of the significant factors for the true density.Sign. factor?True density averages of compared groups (gcm−3)STST (°C)1280145016504.0704.0654.059TSTS014.0624.067CR:STCRST (°C)128014501650Slow4.0684.0634.062Fast4.0714.0664.055CR:ST:TSSee means in Table 3 and Fig. 6?CR – cooling rate; ST – sintering temperature; TS – thermal shocks; XX:YY interaction.Full-size tableTable optionsView in workspaceDownload as CSV