Method for producing dysprosium-iron-boron alloy powder

Details Method for producing dysprosium-iron-boron alloy powder Method for producing dysprosium-iron-boron alloy powder

1987-07-15

1989-02-21

Stallard, Wayland

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

B22F 922, B22F 924

Patent

active

048061557

ABSTRACT:
A method for producing a dysprosium-iron alloy for use in the manufacture of rare-earth element containing, iron-boron permanent magnets. A particle mixture of dysprosium oxide, iron, boron and calcium is compacted, the compact is heated to form a metallic compound comprising dysprosium, boron and iron and to form calcium oxide. There is no need for additives such as calcium chloride that aid in particle disintegration during washing.
A particle mass of -35 mesh is produced from the compact. The particle mass is washed with cold water, and the water is reacted with the calcium oxide and calcium to form calcium hydroxide, while preventing oxidation of the particle mass. The calcium hydroxide is removed from the particle mass as by repeated water washing.

REFERENCES:
patent: 4020236 (1977-04-01), Aonuma et al.
patent: 4375372 (1983-03-01), Koon et al.
patent: 4578242 (1983-03-01), Sharma
patent: 4612068 (1986-09-01), Tanaka et al.
patent: 4663066 (1987-05-01), Fruchart et al.
patent: 4664724 (1987-05-01), Mizoguchi et al.

Affiliated with

Also associated with

Rating

Method for producing dysprosium-iron-boron alloy powder does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for producing dysprosium-iron-boron alloy powder, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for producing dysprosium-iron-boron alloy powder will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1519671