摘要 |
A crucible comprising Al<SUB>2</SUB>O<SUB>3 </SUB>and at least one selected from rare earth oxides inclusive of Y<SUB>2</SUB>O<SUB>3 </SUB>as main components and characterized by firing at 500-1,800° C., the distribution of the rare earth oxide at a higher proportion in a fine particle portion having a particle size of up to 0.5 mm than in a coarse particle portion having a particle size in excess of 0.5 mm, and the substantial absence of the reaction product of the rare earth oxide with Al<SUB>2</SUB>O<SUB>3 </SUB>is suitable for the melting of a rare earth alloy. |