Wear-resistant ceramic for casting rare earth alloys

Details Wear-resistant ceramic for casting rare earth alloys Wear-resistant ceramic for casting rare earth alloys

1987-09-24

1990-10-30

Dixon, Jr., William R.

Compositions: ceramic

Ceramic compositions

Yttrium, lanthanide, actinide, or transactinide containing

501126, C04B 3550

Patent

active

049668757

ABSTRACT:
Refractory ceramics are provided which comprise at least about 70 mole percent yttrium oxide and from about 5 to 30 mole percent aluminum oxide. The ceramics are particularly resistant to attack by molten rare earth alloys and are superior refractories for use with molten neodymium-iron alloys in the manufacture of permanent magnets.

REFERENCES:
patent: 4098612 (1978-07-01), Rhodes et al.

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