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Solid-state synthesis and spark plasma sintering of SrZrO3ceramics

Authors
Journal
Journal of Alloys and Compounds
0925-8388
Publisher
Elsevier
Publication Date
Volume
509
Issue
22
Identifiers
DOI: 10.1016/j.jallcom.2011.03.009
Keywords
  • Ceramics
  • Solid State Reaction
  • Sintering
  • Microstructure

Abstract

Abstract SrZrO 3 powders are obtained by solid state reaction from SrCO 3 and ZrO 2 precursors, without involving intermediate calcination and grinding steps. The resulted powders are essentially within a single phase, with sub-micron average crystallite size. Pellets of these powders show a relatively poor sintering behavior, when fired up to 1600 °C. Alternatively, spark plasma sintering technique is used in order to obtain nearly 100% dense samples at the expense of excessive grain coarsening (i.e., up to 5 μm in diameter). Crystalline structure, composition and morphology of the specimens obtained in this work are investigated by X-ray diffraction, scanning and transmission electron microscopy together with energy dispersive X-ray spectroscopy.

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