Process for the preparation of pure alloys based on rare earths

Details Process for the preparation of pure alloys based on rare earths Process for the preparation of pure alloys based on rare earths

1987-11-24

1988-08-30

Rutledge, L. Dewayne

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 845, 75 84, 420416, C22C 100, C22C 102

Patent

active

047674555

ABSTRACT:
An industrial process for the obtaining, preferably without casting, of its of high-purity master alloy based on at least one rare earth and at least one transition metal by metallothermic reduction of a compound of said rare earth by means of a reducing agent such as alkali or alkaline earth metals, characterized in that the transition metal is introduced into the starting reaction mixture, at least in part in the form of a compound which can be reduced by the reducing agent used.

REFERENCES:
patent: 3883346 (1975-05-01), Martin
patent: 3928089 (1975-12-01), Cech
patent: 4032328 (1977-06-01), Hurd
patent: 4135921 (1979-01-01), Morrice et al.
patent: 4578242 (1986-03-01), Sharma
patent: 4612047 (1986-09-01), Schmidt et al.
patent: 4636353 (1987-01-01), Seon et al.
patent: 4680055 (1987-07-01), Sharma
patent: 4681623 (1987-07-01), Okajima et al.

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