MICROSTRUCTURAL CHANGES DURING HOT ISOSTATIC PRESSING OF SINTERED LEAD ZIRCONATE TITANATE.

K. G. Ewsuk, Gary Lynn Messing

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A commercial lead zirconate titanate powder of composition (Pb//0//. //9//4Sr//0//. //0//6) (Zr//0//. //5//3Ti//0//. //4//7)O//3 was used. Macropores in sintered PZT shrink appreciably by a two-stage process during hot isostatic pressing. In the first stage, rapid size reduction occurs via rearrangement and solution-precipitation due to the high concentration of a liquid phase at pore surfaces. The results of high pressure HIP experiments indicate the processing related macropores are responsible for end point densities that are less than theoretical. It is concluded that HIP cannot be used to completely remove large processing related voids. However, with the proper control of powder processing and sintering to avoid the large defects, HIPing can be a viable means of removing residual porosity in sintered ceramics.

Original languageEnglish (US)
Title of host publicationMaterials Science Research
EditorsRobert Foster Davis, Hayne III Palmour, Richard L. Porter
PublisherPlenum Press
Pages609-619
Number of pages11
Volume17
ISBN (Print)0306416778
StatePublished - Dec 1 1984

Fingerprint

Hot isostatic pressing
Lead
Processing
Powders
Sintering
Porosity
Defects
Liquids
Chemical analysis
Experiments

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Ewsuk, K. G., & Messing, G. L. (1984). MICROSTRUCTURAL CHANGES DURING HOT ISOSTATIC PRESSING OF SINTERED LEAD ZIRCONATE TITANATE. In R. F. Davis, H. III. Palmour, & R. L. Porter (Eds.), Materials Science Research (Vol. 17, pp. 609-619). Plenum Press.
Ewsuk, K. G. ; Messing, Gary Lynn. / MICROSTRUCTURAL CHANGES DURING HOT ISOSTATIC PRESSING OF SINTERED LEAD ZIRCONATE TITANATE. Materials Science Research. editor / Robert Foster Davis ; Hayne III Palmour ; Richard L. Porter. Vol. 17 Plenum Press, 1984. pp. 609-619
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Ewsuk, KG & Messing, GL 1984, MICROSTRUCTURAL CHANGES DURING HOT ISOSTATIC PRESSING OF SINTERED LEAD ZIRCONATE TITANATE. in RF Davis, HIII Palmour & RL Porter (eds), Materials Science Research. vol. 17, Plenum Press, pp. 609-619.

MICROSTRUCTURAL CHANGES DURING HOT ISOSTATIC PRESSING OF SINTERED LEAD ZIRCONATE TITANATE. / Ewsuk, K. G.; Messing, Gary Lynn.

Materials Science Research. ed. / Robert Foster Davis; Hayne III Palmour; Richard L. Porter. Vol. 17 Plenum Press, 1984. p. 609-619.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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N2 - A commercial lead zirconate titanate powder of composition (Pb//0//. //9//4Sr//0//. //0//6) (Zr//0//. //5//3Ti//0//. //4//7)O//3 was used. Macropores in sintered PZT shrink appreciably by a two-stage process during hot isostatic pressing. In the first stage, rapid size reduction occurs via rearrangement and solution-precipitation due to the high concentration of a liquid phase at pore surfaces. The results of high pressure HIP experiments indicate the processing related macropores are responsible for end point densities that are less than theoretical. It is concluded that HIP cannot be used to completely remove large processing related voids. However, with the proper control of powder processing and sintering to avoid the large defects, HIPing can be a viable means of removing residual porosity in sintered ceramics.

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Ewsuk KG, Messing GL. MICROSTRUCTURAL CHANGES DURING HOT ISOSTATIC PRESSING OF SINTERED LEAD ZIRCONATE TITANATE. In Davis RF, Palmour HIII, Porter RL, editors, Materials Science Research. Vol. 17. Plenum Press. 1984. p. 609-619