アルミニウム溶湯用フィルタとしてのほう酸アルミニウムで被覆したアルミナの適性評価
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概要
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We studied fabrication of improved alumina tube filter component coated with aluminum borate crystal 9Al2O3·2B2O3 (9A2B) for filtration of molten aluminum. The 9A2B crystals were not be formed by heating an Al2O3–B2O3–CaO glass frit. It was necessary to add Al2O3 material to the frit for forming the 9A2B crystals on alumina grain. XRD results showed that 9A2B crystals were formed at 1100°C and grown to 1200°C, and more grown into cooling down process from 1200 to 1000°C. As compared with the conventional tube filter coated with boric silicate glass, the alumina filter components had high strength until 1200°C, small thermal expansion, little pollution to molten aluminum, and little corrosion by not wetting to molten aluminum.
- 一般社団法人 軽金属学会の論文
一般社団法人 軽金属学会 | 論文
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