粉体および粉末冶金
Online ISSN : 1880-9014
Print ISSN : 0532-8799
ISSN-L : 0532-8799
研究ノート
低環境負荷なシリカ/低融点合金複合化プロセスの開発および固化体特性評価
増田 圭汰Hadi RAZAVI-KHOSROSHAHI藤 正督
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2020 年 67 巻 6 号 p. 343-348

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As a method of combining ceramics and metal, a molten metal stirring method, a pressure impregnation method, have been reported. However, since these methods use a molten metal, high-temperature conditions are indispensable, being production methods with high environmental loads. Our laboratory has developed a “non-firing sintering process” that can produce high-density solids by drying at ultra-low temperatures below 100°C (373 K). In this study, by using this process, a low-melting-point alloy with a melting point of 83°C (356 K) is combined with silica powder in a solid state, so that the low-temperature exhaust heat below 100°C (373 K), which is currently discarded, can be stored. In addition, an attempt was made to produce a solidified material having high strength and low-temperature heat storage ability with low environmental load by using silica particles as reinforcing particles. The obtained solidified body has excellent low-temperature heat storage capacity, and succeeded in suppressing the leakage of the low-melting alloy during the phase transition.

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