Abstract
A fundamental study of hot isostatic pressing (HIPing) was performed on Y-TZP powder compacts, and the effect of the various HI Ping process variables (time, temperature and pressure) was examined on the densification behaviour. The results were analysed using Ashby's HIPing model, which was found to be applicable for this system. The densification was found to be governed by the grain-boundary diffusion of cations. The use of grain-boundary transport characteristics determined in this study enabled HIP maps to predict the densification behaviour of HIPing within an accuracy of a factor of three for all stages of densification, except for the results at low HIPing pressure and the region of near full density.
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Kim, J.Y., Okamoto, S., Uchida, N. et al. Hot isostatic pressing of Y-TZP powder compacts. J Mater Sci 25, 4634–4638 (1990). https://doi.org/10.1007/BF01129918
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DOI: https://doi.org/10.1007/BF01129918