研究論文
JIS AD12.1アルミニウム合金溶湯の酸化に及ぼす耐火物コーティングの影響
2021 年 93 巻 1 号 p. 3-10
詳細
2021 年 93 巻 1 号 p. 3-10
In this report, the effect of refractory coating agent on the oxidation of molten aluminum alloy was investigated. Cup-shape refractories were molded, sintered, and coated. AD12.1 molten alloy was poured into them and they were observed by SEM-EDX after four and six days. The surface of the refractories was rough in the order of no-coated ＜ Zr-coated ＜ P-coated. Moreover, the amount of Mg oxide on the surface of the refractory increased in the same order. On the other hand, the amount of Mg in the molten metal became depleted in the same order. These findings suggest that the microscopic unevenness of the refractory surface affects the surface area of the molten metal and changes the amount of oxides produced dominantly.
