Analysis of a Magnesium-containing: β-Eucryptite Solid Solution by the Lattice Constant Method and Its Application
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概要
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An X-ray diffraction method has been developed for the determination of the composition of a magnesium-containing β-eucryptite solid solution which consists of a pseudo-ternary system, SiO<SUB>2</SUB>–Mg<SUB>1⁄2</SUB>AlO<SUB>2</SUB>–LiAlO<SUB>2</SUB>. Standard samples of the solid solution within the range of 60–75 mol% SiO<SUB>2</SUB> and 0–15 mol% Mg<SUB>1⁄2</SUB>AlO<SUB>2</SUB> were prepared from high-purity materials by the "glass-crystallization" technique. The diffraction angles of the (206) and (212) planes were measured from the center of gravity of the profile recorded on a chart by a counter diffractometer. After having been corrected for various systematic errors, both angles were used for the calculation of the lattice constants. It was found that Mg<SUB>1⁄2</SUB>AlO<SUB>2</SUB> and LiAlO<SUB>2</SUB> contributed similarly to <I>a</I><SUB>0</SUB>, but in a different way to <I>c</I><SUB>0</SUB>. The composition of the solid solution in a commercial glass-ceramic could be determined from the correlation between the composition and the lattice constants. The standard deviation of the determination from one measurement was about 0.2–0.4 mol%, and the time required for analysis was about 30 min.
- 公益社団法人 日本化学会の論文
著者
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Fukasawa Tsutomu
Department Of Applied Chemistry And Biotechnology Faculty Of Engineering Yamanashi University
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Iwatsuki Masaaki
Department Of Applied Chemistry And Biotechnology Faculty Of Engineering University Of Yamanashi
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Iwatsuki Masaaki
Department of Applied Chemistry, Faculty of Engineering, Yamanashi University
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Tsukada Norio
Department of Applied Chemistry, Faculty of Engineering, Yamanashi University
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Fukasawa Tsutomu
Department of Applied Chemistry, Faculty of Engineering, Yamanashi University
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