Bonded magnet with low losses and easy saturation
AssigneeMagnequench International, Inc.
InventorViswanathan Panchanathan
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Abstract
The present invention provides a bonded isotropic magnet containing a composition comprising from about 5 to 25% rare earth metal, from about 0.5 to about 4.5% boron, from about 0.5 to about 3.0% niobium, and the balance principally of iron. Such a magnet exhibits low coercivity and low loss upon aging.
Claims11
A bonded isotropic magnet comprising a bonding agent and melt spun crystalline particles formed from a composition comprising, on a weight basis, from about 5 to about 25 % rare earth metal, from about 0.5 to about 4.5 % boron wherein the total of said rare earth metal and said boron ranges from about 9 to about 26 %, from about 0.5 to about 3.0% niobium, and the balance principally of iron, said magnet having a coercivity of less than 10 kOe.
A bonded isotropic magnet comprising an epoxy bonding agent and melt spun crystalline particles formed from a composition comprising, on a weight basis, from about 5 to about 25% rare earth metal, from about 0.5 to about 4.5% boron wherein the total of said rare earth metal and said boron ranges from about 9 to about 26%, from about 0.5 to about 3.0% niobium, and a balance principally of iron, said melt spun crystalline particles having a microstructure of 2-14-1 with soft phase of .alpha.-Fe and/or Fe.sub.3 B, said magnet having a coercivity of less than 10 kOe.
A bonded isotropic magnet comprising an epoxy bonding agent and melt spun crystalline particles formed from a composition comprising, on a weight basis, from about 5 to about 25% rare earth metal, from about 0.5 to about 4.5% boron wherein the total of said rare earth metal and said boron ranges from about 9 to about 26%, from about 0.5 to about 3.0% niobium, and a balance principally of iron, said magnet having a coercivity of less than 10 kOe,
- said magnet having greater than 60% saturation in a magnetic field of 10 kOe.
Dependencies are inferred from the claim text.