Abstract
The effects of hot isostatic pressing (HIPing) on sintered lead zirconate titanate are presented. Densities up to ∼98% were obtained by HIPing for 1 h at 1300°C with argon gas pressures of either 20.7 or 138 MPa. The microstructural changes observed after HIPing, and the rapid initial kinetics for densification and pore shrinkage, indicate that prssure-enhanced grain rearrangement and solution-precipitation processes are primarily responsible for densification. The persistance of large voids after HIPing suggests that it may be impossible to completely eliminate gross processing-related defects in lead zirconate titanate by HIPing.
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Ewsuk, K.G., Messing, G.L. Densification of sintered lead zirconate titanate by hot isostatic pressing. J Mater Sci 19, 1530–1534 (1984). https://doi.org/10.1007/BF00563049
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DOI: https://doi.org/10.1007/BF00563049