Journal of the Society of Inorganic Materials, Japan
Online ISSN : 2185-4378
ISSN-L : 1345-3769
吉松 英之河内 慶子上野 覚村岡 賢三浦 嘉也
ジャーナル フリー

2000 年 7 巻 286 号 p. 172-177


Sinterability of CaO prepared from Al2O3 coated CaCO3-Ca (OH) 2 powder was investigated in order to clarify effect of Ca (OH) 2 and small amount of Al2O3 content.The CaCO3-Ca (OH) 2 mixed powders were coated with a chelate compound of aluminum corresponding to 0-0.1mass%Al2O3. The CIP'ed compacts of the powders were sintered at a rate of 300°C·h-1 up to 1500°C in air and held at 1500°C for 2h to prepare CaO ceramics. The bulk density and fine structure for the CaO ceramics were measured in process of sintering. The bulk density for the CaO ceramics prepared from CaCO3-Ca (OH) 2 mixed powder was higher than that from CaCO3 powder at the temperature above 800°C. The bulk density of the CaO ceramics was slightly increased with increase of Al2O3 content, while the CaO grain size was greatly increased with Al2O3 content.

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