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Sintering Distorsion Produced by Differences in Green Density and Sample Shape of PZT Compacted Powders

By: Gheorghiu, A.; Miclea, C.F.; Spanulescu, I.; Tanasoiu, C.; Miclea, C.; Amarande, L.; Miclea, C.T.; David, C.; Trupina, L.; Cioangher, M.;

2007 / IEEE / 978-1-4244-0847-4

Description

This item was taken from the IEEE Conference ' Sintering Distorsion Produced by Differences in Green Density and Sample Shape of PZT Compacted Powders ' A study was made to determine the effect of sample shape, compacting pressure and green density gradients on the final shape and density of sintered bodies. Experiments were carried out on a PZT type powder, pressed with a large range of shapes from long cylinders up to thin discs, at pressures ranging between 40 and 180 MPa. Important shape distorsion were found for both long cylinders and thin discs but surprisingly the final density was not essentially changed even if the green compacted density showed important changes within the samples. Differences in shrinkage of diameter and thickness brought about by sintering for samples with different shapes were found.