Patent ID: 7157395
Filing Date: 2007-01-02
Classification: B29C,C04B,C22B,F27B,F27D

Abstract:
1. A crucible for the melting of a rare earth alloy, comprising Al 2 O 3 , Al 2 TiO 5 and at least one selected from rare earth oxides inclusive of Y 2 O 3 as main components, wherein the crucible is obtained by firing at 1,000 to 1,700° C., the rare earth oxide is distributed at a higher proportion in a fine particle portion consisting of fine particles having a particle size of up to 0.5 mm than in a coarse particle portion consisting of coarse particles having a particle size in excess of 0.5 mm, and the crucible is substantially free of reaction product of the rare earth oxide with Al