Initial Sintering and Grain Growth Kinetics of Magnesium Oxide (MgO) Prepared by Alkoxy-Method
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概要
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The kinetics of the initial sintering and grain growth of magnesium oxide (MgO) prepared by the alkoxy-method were investigated by means of dilatometry, electron microscopy and the measurement of isothermal shrinkage. The obtained results are summarized as follows.<BR>(1) The initial sintering kinetics of MgO were determined from 1000 to 1200°C. The sintering process was governed by the volume diffusion of oxygen ions which was represented by <I>D</I>=2.54×10<SUP>-5</SUP>exp(-64, 000/<I>RT</I>)cm<SUP>2</SUP>/sec.<BR>(2) The grain growth of MgO was represented by the expression of <I>G</I><SUP>2</SUP>-<I>G</I><SUB>0</SUB><SUP>2</SUP>=<I>kt</I>, and the temperature dependence of <I>k</I> was given by <I>k</I>=3.3×10<SUP>-3</SUP> exp(-77, 000/<I>RT</I>)em<SUP>2</SUP>/sec.
- 社団法人 粉体粉末冶金協会の論文
著者
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Shimizu Kiyoshi
Department Of Anatomy Tokyo Medical College
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Yamaguchi Osamu
Department Of Agricultural Sciences Faculty Of Agriculture Okayama University
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Tonami Hitoshi
Department of Applied Chemistry, Faculty of Engineering, Doshisha University
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Hayashi Tadahiro
Department of Applied Chemistry, Faculty of Engineering, Doshisha University
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Shimizu Kiyoshi
Department of Applied Chemistry, Faculty of Engineering, Doshisha University
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Shimizu Kiyoshi
Deparment of Applied Chemistry, Faculty of Engineering, Doshisha University
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Yamaguchi Osamu
Deparment of Applied Chemistry, Faculty of Engineering, Doshisha University
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