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US 4,409,043 AGranted
Amorphous transition metal-lanthanide alloys
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorNorman C. Koon
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Abstract
An amorphous alloy of iron, boron, lanthanum, and a lanthanide wherein lanthanum and the lanthanide comprise up to 15 atomic percent of the alloy is obtained by rapidly quenching the molten alloy. The amorphous alloy is useful as a soft magnetic alloy.
Claims20
An alloy represented by the formula:
- (M.sub.w X.sub.x B.sub.l-w-x).sub.l-y (R.sub.z La.sub.l-z).sub.y wherein w is from about 0.7 to about 0.9;
- x is from 0 to about 0.10;
- y is from about 0.05 to about 0.15;
- z is from 0 to about 0.95;
- M is selected from the class consisting of iron, cobalt, an iron-cobalt alloy, an iron-manganese alloy having at least 50 atomic percent iron, an iron-nickel alloy having at least 50 atomic percent iron, an iron-cobalt-manganese alloy having at least 50 atomic percent iron and cobalt, an iron-cobalt-nickel alloy having at least 50 atomic percent iron and cobalt, and an iron-cobalt-manganese-nickel alloy having at least 50 atomic percent iron and cobalt;
- X is an auxiliary glass former selected from the class consisting of phosphorous, carbon, silicon, aluminum, arsenic, germanium, indium, antimony, bismuth, tin, and mixtures thereof, and R is selected from the group consisting of cerium, praseodymium, neodymium, and mixtures thereof, said alloy having an amorphous microstructure.
3 more elements
Dependencies are inferred from the claim text.