Low boron amorphous alloy and process for producing same
AssigneeKawasaki Steel Corporation
InventorsKensuke Matsuki, Fumio Kogiku, Nobuo Shiga, Masao Yukumoto
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Abstract
An amorphous alloy having a boron content of about 6 to 10 at %, cast into a plate, wherein the plate thickness is about 15 to 25 μm, and the surface roughness Ra0.8 of the plate is about 0.8 μm or less.
Claims5
An Fe—Si—B base amorphous alloy plate having a boron content of about 6 to 10 at %, wherein the thickness of said plate is about 21 to 25 μm, and the surface roughness Ra0.25 of said plate is 0.21 to 0.3 μm, said surface roughness being the center line average roughness on a contact face of said plate with a quenching roll, which is determined at a cut-off value of 0.25 mm.
A solid alloy plate consisting essentially of Fe, Si and about 6-10 at % boron and having a core loss W13/50 in W/kg within the following equation
- W=a+b·t+c·Ra0.8
- wherein t designates plate thickness in μm and Ra0.8 designates plate center line average roughness on a contact face with a quenching roll, determined at a cut-off value of 0.8 mm, and wherein a is in the range of 0-0.2, b is in the range of 0.001-0.004 and c is a constant in the range of 0.05-0.2, said plate having a thickness of about 21 to 25 μm and a surface roughness Ra0.25 of 0.21 to 0.3 μm, said surface roughness being the center line average roughness on a contact face of said plate with a quenching roll, which is determined at a cut-off value of 0.25 mm.
An Fe—Si—B base amorphous alloy cast in the form of a plate having a boron content of about 6 to 10 at %, wherein the surface roughness Ra0.25 of said plate is 0.21 to 0.3 μm, said surface roughness being the centerline average roughness on a contact face of said plate with a quenching roll, which is determined at a cut-off value of 0.25 mm.
Dependencies are inferred from the claim text.