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Microstructural development of ZnO using a rate-controlled sintering dilatometer

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Abstract

Rate-controlled sintering (RCS) of isostatically pressed particulate compacts of ZnO showed lower average grain sizes and intragranular pore densities than constant heating rate temperature controlled sintering. Valid comparisons of this form could only be made after corrections to hardware and software which reduced specimen creep under dilatometer pushrod load, nonuniform pushrod expansion, reproducible specimen temperature determination, thermal expansion during sintering, and instantaneous termination of sintering at the specified end of RCS. The improved microstructures from RCS were attributed to maximized efficiency of densification, optimizing the time and temperatures permitted for grain growth.

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Authors and Affiliations

  1. School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia, 30332, USA

    Gaurav Agarwal & Robert F. Speyer

  2. Center for Dielectric Studies, Materials Research Laboratory, The Pennsylvania State University, University Park, Pennsylvania, 16802, USA

    Wesley S. Hackenberger

Authors
  1. Gaurav Agarwal
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  2. Robert F. Speyer
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  3. Wesley S. Hackenberger
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Agarwal, G., Speyer, R.F. & Hackenberger, W.S. Microstructural development of ZnO using a rate-controlled sintering dilatometer. Journal of Materials Research 11, 671–679 (1996). https://doi.org/10.1557/JMR.1996.0081

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  • DOI: https://doi.org/10.1557/JMR.1996.0081

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