Abstract: An Fe—Si—B—C-based amorphous alloy ribbon as thick as 20-30 ?m having a composition comprising 80.0-80.7 atomic % of Fe, 6.1-7.99 atomic % of Si, and 11.5-13.2 atomic % of B, the total amount of Fe, Si and B being 100 atomic %, and further comprising 0.2-0.45 atomic % of C per 100 atomic % of the total amount of Fe, Si and B, except for inevitable impurities has a stress relief degree of 92% or more.

Abstract: Disclosed is a semi-amorphous, ductile brazing foil with a composition consisting essentially of NibalFeaCrbPcSidBeMof with approximately 30 atomic percent ?a?approximately 70 atomic percent; approximately 0 atomic percent ?b?approximately 20 atomic percent; approximately 9 atomic percent ?c?approximately 16 atomic percent; approximately 0 atomic percent ?d?approximately 4 atomic percent; e?approximately 2 atomic percent; f?approximately 5 atomic percent; and the balance being Ni and other impurities; where c+d+e<approximately 16 atomic percent.

Abstract: Disclosed is a semi-amorphous, ductile brazing foil with a composition consisting essentially of NibalFeaCrbPcSidBeMof with approximately 30 atomic percent?a?approximately 38 atomic percent; approximately 10 atomic percent?b?approximately 20 atomic percent; approximately 7 atomic percent?c?approximately 20 atomic percent; approximately 2 atomic percent?d?approximately 4 atomic percent; e?approximately 2 atomic percent; f?approximately 5 atomic percent; and the balance being Ni and other impurities; where c+d+e<approximately 16 atomic percent.

Abstract: Disclosed is the semi-amorphous, ductile brazing foil with composition consisting essentially of NibalCraBbPcSidMoeFef with approximately 24 atomic percent?a?approximately 31 atomic percent; b?approximately 3 atomic percent; approximately 9 atomic percent?c?approximately 11 atomic percent; approximately 2 atomic percent?d?approximately 4 atomic percent; e?approximately 2 atomic percent; f?approximately 1 atomic percent; and the balance being Ni and other impurities; where b+c+d<approximately 16 atomic percent.

Abstract: An Fe—Si—B—C-based amorphous alloy ribbon as thick as 20-30 ?m having a composition comprising 80.0-80.7 atomic % of Fe, 6.1-7.99 atomic % of Si, and 11.5-13.2 atomic % of B, the total amount of Fe, Si and B being 100 atomic %, and further comprising 0.2-0.45 atomic % of C per 100 atomic % of the total amount of Fe, Si and B, except for inevitable impurities has a stress relief degree of 92% or more.

Abstract: An Fe—Si—B—C-based amorphous alloy ribbon as thick as 20-30 ?m having a composition comprising 80.0-80.7 atomic % of Fe, 6.1-7.99 atomic % of Si, and 11.5-13.2 atomic % of B, the total amount of Fe, Si and B being 100 atomic %, and further comprising 0.2-0.45 atomic % of C per 100 atomic % of the total amount of Fe, Si and B, except for inevitable impurities has a stress relief degree of 92% or more.

Abstract: Disclosed is a semi-amorphous, ductile brazing foil with a composition consisting essentially of NibalFeaCrbPcSidBeMof with approximately 30 atomic percent?a?approximately 38 atomic percent; approximately 10 atomic percent?b?approximately 20 atomic percent; approximately 7 atomic percent?c?approximately 20 atomic percent; approximately 2 atomic percent?d?approximately 4 atomic percent; e?approximately 2 atomic percent; f?approximately 5 atomic percent; and the balance being Ni and other impurities; where c+d+e<approximately 16 atomic percent.

Abstract: Disclosed is a semi-amorphous, ductile brazing foil with a composition consisting essentially of Niba1FeaCrbPcSidBeMof with approximately 30 atomic percent ?a?approximately 70 atomic percent; approximately 0 atomic percent ?b?approximately 20 atomic percent; approximately 9 atomic percent ?c?approximately 16 atomic percent; approximately 0 atomic percent ?d?approximately 4 atomic percent; e?approximately 2 atomic percent; f?approximately 5 atomic percent; and the balance being Ni and other impurities; where c+d+e<approximately 16 atomic percent.

Abstract: Disclosed is the semi-amorphous, ductile brazing foil with composition consisting essentially of NibalCraBbPcSidMoeFef with approximately 24 atomic percent?a?approximately 31 atomic percent; b?approximately 3 atomic percent; approximately 9 atomic percent?c?approximately 11 atomic percent; approximately 2 atomic percent?d?approximately 4 atomic percent; e?approximately 2 atomic percent; f?approximately 1 atomic percent; and the balance being Ni and other impurities; where b+c+d<approximately 16 atomic percent.

Abstract: A ferromagnetic amorphous alloy ribbon includes an alloy having a composition represented by FeaSibBcCd where 80.5?a?83 at. %, 0.5?b?6 at. %, 12?c?16.5 at. %, 0.01?d?1 at. % with a+b+c+d=100 and incidental impurities, the defect length along a direction of the ribbon's length being between 5 mm and 200 mm, the defect depth being less than 0.4×t ?m and the defect occurrence frequency being less than 0.05×w times within 1.5 m of ribbon length, where t and w are ribbon thickness and ribbon width, respectively, and the ribbon in its annealed state and straight strip form of the ribbon, has a saturation magnetic induction exceeding 1.60 T, and exhibits a magnetic core loss of less than 0.14 W/kg when measured at 60 Hz and at 1.3 T induction level. The ribbon is suitable for use in transformer cores, rotational machines, electrical chokes, magnetic sensors and pulse power devices.

Abstract: A ferromagnetic amorphous alloy ribbon includes an alloy having a composition represented by FeaSibBcCd where 80.5?a?83 at. %, 0.5?b?6 at. %, 12?c?16.5 at. %, 0.01?d?1 at. % with a+b+c+d=100 and incidental impurities, the ribbon being cast from a molten state of the alloy with a molten alloy surface tension of greater than or equal to 1.1 N/m on a chill body surface; the ribbon having a ribbon length, a ribbon thickness, and a ribbon surface facing the chill body surface; the ribbon having ribbon surface protrusions being formed on the ribbon surface facing the chill body surface; the ribbon surface protrusions being measured in terms of a protrusion height and a number of protrusions; the protrusion height exceeding 3 ?m and less than four times the ribbon thickness, and the number of protrusions being less than 10 within 1.5 m of the cast ribbon length; and the alloy ribbon in its annealed straight strip form having a saturation magnetic induction exceeding 1.

Abstract: A ferromagnetic amorphous alloy ribbon, a method of fabricating a ribbon and a wound transformer core are provided. The ribbon includes an alloy of FeaSibBcCd where 80.5?a?83 at. %, 0.5?b?6 at. %, 12?c?16.5 at. %, 0.01?d?1 at. % with a+b+c+d=100, and is cast from a molten state of the alloy, having a-surface tension of greater than or equal to 1.1 N/mi,. A defect length along a direction of the ribbon's length is between 5 mm and 200 mm, a defect depth less than 0.4 ×t ?m and a defect occurrence frequency less than 0.05 ×w times within 1.5 m of ribbon length, where t is the ribbon thickness and w is the ribbon width in mm. The ribbon has a saturation magnetic induction exceeding 1.60 T and a magnetic core loss of less than 0.14 W/kg when measured at 60 Hz and at 1.3 T induction level in an annealed straight strip form, and a core magnetic loss of less than 0.3 W/kg and an exciting power of less than 0.

Abstract: A ferromagnetic amorphous alloy ribbon includes an alloy having a composition represented by FeaSibBcCd where 80.5?a?83 at. %, 0.5?b?6 at. %, 12?c?16.5 at. %, 0.01?d?1 at. % with a+b+c+d=100 and incidental impurities, the ribbon being cast from a molten state of the alloy with a molten alloy surface tension of greater than or equal to 1.1 N/m on a chill body surface; the ribbon having a ribbon length, a ribbon thickness, and a ribbon surface facing the chill body surface; the ribbon having ribbon surface protrusions being formed on the ribbon surface facing the chill body surface; the ribbon surface protrusions being measured in terms of a protrusion height and a number of protrusions; the protrusion height exceeding 3 ?m and less than four times the ribbon thickness, and the number of protrusions being less than 10 within 1.5 m of the cast ribbon length; and the alloy ribbon in its annealed straight strip form having a saturation magnetic induction exceeding 1.

Abstract: A ferromagnetic amorphous alloy ribbon includes an alloy having a composition represented by FeaSibBcCd where 80.5?a?83 at. %, 0.5?b?6 at. %, 12?c?16.5 at. %, 0.01?d?1 at. % with a+b+c+d=100 and incidental impurities; the ribbon being cast from a molten state of the alloy, with a molten alloy surface tension of greater than or equal to 1.1 N/m; the defect length along a direction of the ribbon's length being between 5 mm and 200 mm, the defect depth being less than 0.4×t ?m and the defect occurrence frequency being less than 0.05×w times within 1.5 m of ribbon length, where t is the ribbon thickness and w is the ribbon width, and the ribbon having a saturation magnetic induction exceeding 1.60 T and exhibiting a magnetic core loss of less than 0.14 W/kg when measured at 60 Hz and at 1.3 T induction level in an annealed straight strip form, and a core magnetic loss of less than 0.3 W/kg and an exciting power of less than 0.4 VA/kg in an annealed wound transformer core form.

Abstract: A ferromagnetic amorphous alloy ribbon includes an alloy having a composition represented by FeaSibBcCd where 80.5?a?83 at. %, 0.5?b?6 at. %, 12?c?16.5 at. %, 0.01?d?1 at. % with a+b+c+d=100 and incidental impurities, the defect length along a direction of the ribbon's length being between 5 mm and 200 mm, the defect depth being less than 0.4×t ?m and the defect occurrence frequency being less than 0.05×w times within 1.5 m of ribbon length, where t and w are ribbon thickness and ribbon width, respectively, and the ribbon in its annealed state and straight strip form of the ribbon, has a saturation magnetic induction exceeding 1.60 T, and exhibits a magnetic core loss of less than 0.14 W/kg when measured at 60 Hz and at 1.3 T induction level. The ribbon is suitable for use in transformer cores, rotational machines, electrical chokes, magnetic sensors and pulse power devices.