Journal of the Ceramic Society of Japan
Online ISSN : 1348-6535
Print ISSN : 1882-0743
ISSN-L : 1348-6535
Feature: Ceramics Processing through Energy Consumption Reduction (Green Processing): Notes
Preparation of β-CaSiO3 powder by water vapor-assisted solid-state reaction
Takahiro KOZAWAKazumichi YANAGISAWAAnri YOSHIDAAyumu ONDAYoshikazu SUZUKI
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2013 Volume 121 Issue 1409 Pages 103-105

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Abstract

Solid-state reaction between carbonate and/or oxide precursors is a simple method to prepare ceramic powders. However, a high calcination temperature is required for this method because of limited diffusion during calcination. In this paper, we describe that the formation of β-CaSiO3 by solid-state reaction is accelerated by water vapor. β-CaSiO3 powders have been prepared by solid-state reaction between CaCO3 and amorphous SiO2 as a raw material. Single-phase β-CaSiO3 was successfully prepared by one-step calcination at 800°C for 2 h in water vapor, while it seemed to be difficult to prepare the single-phase β-CaSiO3 by calcination in air. Water vapor-assisted solid-state reaction is likely to be applicable to prepare other functional ceramic powders at low temperatures.

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© 2013 The Ceramic Society of Japan
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