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Home  >  Journal list  >  Journal of the Ceramic Society of Japan  >  Vol.121  No.1409 (January) (2013)  >  pp.103-105

Journal of the Ceramic Society of Japan
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Preparation of β-CaSiO3 powder by water vapor-assisted solid-state reaction

Takahiro KOZAWA1) 2), Kazumichi YANAGISAWA2), Anri YOSHIDA2), Ayumu ONDA2), Yoshikazu SUZUKI1)
1) Faculty of Pure and Applied Sciences, University of Tsukuba 2) Research Laboratory of hydrothermal Chemistry, Faculty of Science, Kochi University

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.

CaSiO3, Wollastonite, Calcium silicate, Solid-state reaction, Water vapor, Water vapor-assisted formation

Received: July 25, 2012
Accepted: July 30, 2012 , Published online: January 01, 2013
Copyright © 2013 The Ceramic Society of Japan



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