Glass Formation in Multicomponent Phosphate Systems Containing TiO<SUB>2</SUB>
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概要
- 論文の詳細を見る
Glass formation was investigated in the Na<SUB>2</SUB>O–TiO<SUB>2</SUB>–P<SUB>2</SUB>O<SUB>5</SUB>, K<SUB>2</SUB>O–TiO<SUB>2</SUB>–P<SUB>2</SUB>O<SUB>5</SUB>, BaO–TiO<SUB>2</SUB>–P<SUB>2</SUB>O<SUB>5</SUB>,Na<SUB>2</SUB>O–BaO–P<SUB>2</SUB>O<SUB>5</SUB>, and Na<SUB>2</SUB>O–BaO–TiO<SUB>2</SUB>–P<SUB>2</SUB>O<SUB>5</SUB> systems. In the Na<SUB>2</SUB>O–TiO<SUB>2</SUB>–P<SUB>2</SUB>O<SUB>5</SUB> system, glass containing up to 45.5 mol% TiO<SUB>2</SUB> was found to be formed at the composition of Na<SUB>2</SUB>O/P<SUB>2</SUB>O<SUB>5</SUB>=1, whereas in the K<SUB>2</SUB>O–TiO<SUB>2</SUB>–P<SUB>2</SUB>O<SUB>5</SUB> system the glass formation was observed in a narrow region along the composition of K<SUB>2</SUB>O/P<SUB>2</SUB>O<SUB>5</SUB>=1 in a three-component diagram. In the BaO–TiO<SUB>2</SUB>–P<SUB>2</SUB>O<SUB>5</SUB> system, only the glass containing about 10 mol% TiO<SUB>2</SUB> as a maximum was obtained. In the Na<SUB>2</SUB>O–BaO–TiO<SUB>2</SUB>-P<SUB>2</SUB>O<SUB>5</SUB> system, the region of glass formation extended with an increase of Na<SUB>2</SUB>O up to 30 mol%. These results suggested that a certain amount of Na<SUB>2</SUB>O is necessary for the formation of glass containing a large amount of TiO<SUB>2</SUB> in the presence of BaO. The three-component diagrams of the Na<SUB>2</SUB>O–TiO<SUB>2</SUB>–P<SUB>2</SUB>O<SUB>5</SUB> and Na<SUB>2</SUB>O–BaO–P<SUB>2</SUB>O<SUB>5</SUB> systems indicated that the most favorable amount of Na<SUB>2</SUB>O for the glass formation in this four-component system is 27 to 28 mol%.
- 公益社団法人 日本化学会の論文
著者
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HABA Masanori
Department of Thoracic and Cardiovascular Surgery Wakayama Medical University
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Kishioka Akira
Department Of Chemistry Faculty Of Science And Engineering Sophia University
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Amagasa Michio
Department of Chemistry, Faculty of Science and Technology, Sophia University
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