Method for production of rare earth metal-nickel hydrogen occlus

Details Method for production of rare earth metal-nickel hydrogen occlus Method for production of rare earth metal-nickel hydrogen occlus

1995-04-06

1997-10-28

Simmons, David A.

Metal founding

Process

Shaping liquid metal against a forming surface

164480, 148555, 148538, 420416, 420443, B22D 1122

Patent

active

056808968

ABSTRACT:
A method for producing rare earth metal-nickel hydrogen occlusive alloy ingot that contains 90 vol % or more of crystals having a crystal grain size of 1 to 50 .mu.m as measured along a short axis of the crystal and 1 to 100 .mu.m as measured along a long axis of the crystal. The method for producing the rare earth metal-nickel hydrogen occlusive alloy ingot involves melting a rare earth metal-nickel alloy and uniformly solidifying the alloy melt to have a thickness of 0.1 to 20 mm under cooling conditions of a cooling rate of 10.degree. to 1000.degree. C./sec and a sub-cooling degree of 10.degree. to 500.degree. C.

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