Conventionally prepared submicron electro-ceramic powders by reactive calcination

Thomas R. Shrout

Research output: Contribution to conferencePaperpeer-review

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Abstract

It is the physiochemical nature of lead-based perovskites Pb(B)O3 that upon reaction of the component oxides a large volumetric expansion occurs. In addition to perovskites, Pb- and Bi-based pyrochlores (A2B2O7) and the layered structure compound Bi4Ti3O12 also exhibit similar physiochemical behavior. At the temperature of maximum expansion, the associated morphological development results in a porous skeletal type structure consisting of fine particulates that can be readily broken down further by milling. The level of expansion and ease of comminution was shown to be strongly dependent on the starting powder size, using perovskite Pb(ZrTi)O3 as the example. Using this concept of 'reactive calcination,' the state of optimum soft agglomeration and subsequent milling can allow for fully reacted powder with submicron particle size.

Original languageEnglish (US)
Pages105-110
Number of pages6
StatePublished - Jan 1991
EventProceedings of the International Conference on the Chemistry of Electronic Ceramic Materials - Jackson, WY, USA
Duration: Aug 17 1990Aug 22 1990

Conference

ConferenceProceedings of the International Conference on the Chemistry of Electronic Ceramic Materials
CityJackson, WY, USA
Period8/17/908/22/90

All Science Journal Classification (ASJC) codes

  • General Engineering

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