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Characterization of BaSnO3-based ceramics:Part 1. Synthesis, processing and microstructural development

Authors
Journal
Journal of Alloys and Compounds
0925-8388
Publisher
Elsevier
Publication Date
Volume
270
Identifiers
DOI: 10.1016/s0925-8388(98)00370-3
Keywords
  • Barium Stannate
  • Capacitor
  • Gas Sensor
  • Electronic Ceramics
  • Solid-State
  • Self-Heat-Sustained
  • Microstructure
Disciplines
  • Chemistry
  • Communication

Abstract

Abstract The compound BaSnO 3 together with its Ca- and Sr-analogs, has recently been projected as potential electronic ceramic material (thermally stable capacitor, chemical sensor for humidity, CO and NO x , etc.). In order to fill the information gaps in the reported research, a vigorous and systematic investigation on these exotic materials has been initiated. A thorough study of BaSnO 3 with respect to its synthesis, processing and microstructural characterization has been made. In order to establish a standard methodology for low-cost mass-manufacturing with identical and beneficial microstructure and reproducible electrical characteristics, different synthesis routes (solid-state and self-heat-sustained) were adopted. Evolution of microstructure which is intimately related to the envisaged properties in the ceramics, was closely and systematically followed in terms of sintering over a wide range of temperatures and soak time. This communication forms the first of two parts in a series of investigations on MSnO 3 systems, where results on the synthesis and processing of “phase pure” barium stannate (BaSnO 3) and development of interesting microstructure are presented.

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