Soft magnetic amorphous alloy and high hardness amorphous alloy and high hardness tool using the same

A soft magnetic amorphous alloy comprising a composition of at least one element of Fe, Co, and Ni as a main component, at least one element of Zr, Nb, Ta, Hf, Mo, Ti and V, and B, wherein the temperature width ΔTx of a supercooled liquid region is 50° C. or more, wherein ΔTx is expressed by the equation ΔTx=Tx−Tg, wherein Tx indicates the crystallization temperature, and Tg indicates the glass transition temperatures, and wherein the magnetic permeability is at least about 1500 at about 1 kHz, and wherein the composition is expressed by the following formula:

• (Fe1−a−bCoaNib)100−x−y−zMxByTz
• wherein 0≦a≦0.29, 0≦b≦0.43, 5 atomic %≦x≦20 atomic %, 10 atomic %≦y≦22 atomic %, 0 atomic %≦z≦5 atomic %, M is at least one element of Zr, Nb, Ta, Hf, Mo, Ti and V, and T is at least one element of Cr, W, Ru, Rh, Pd, Os, Ir, Pt, Al, Si, Ge, C and P.

A high hardness amorphous alloy comprising a composition of at least one element of Fe, Co, and Ni as a main component, at least one element of Zr, Nb, Ta, Hf, Mo, Ti and V, and B, wherein the temperature width ΔTx of a supercooled liquid region is 50° C. or more, wherein ΔTx is expressed by the equation ΔTx=Tx−Tg, wherein Tx indicates the crystallization temperature, and Tg indicates the glass transition temperature, and wherein the hardness is about 1300 to about 1500 Hv, and wherein the composition is expressed by the following formula:

• (Fe1−a−bCoaNib)100−x−y−MxBy
• wherein 0≦a≦0.29, 0≦b≦0.43, 5 atomic %≦x≦20 atomic %, 10 atomic %≦y≦22 atomic %, and M is at least one element of Zr, Nb, Ta, Hf, Mo, Ti and V.

A high hardness amorphous alloy comprising a composition of at least one element of Fe, Co, and Ni as a main component, at least one element of Zr, Nb, Ta, Hf, Mo, Ti and V, and B, wherein the temperature width ΔTx of a supercooled liquid region is 50° C. or more, wherein ΔTx is expressed by the equation ΔTx=Tx−Tg, wherein Tx indicates the crystallization temperature, and Tg indicates the glass transition temperature, and wherein the hardness is about 1300 to about 1500 Hv, and wherein the composition is expressed by the following formula:

• (Fe1−a−bCoaNib)100−x−y−zMxByTz
• wherein 0≦a≦0.29, 0≦b≦0.43, 5 atomic %≦x≦20 atomic %, 10 atomic %≦y≦22 atomic %, 0 atomic %≦z≦5 atomic %, T is at least one element of Cr, W, Ru, Rh, Pd, Os, Ir, Pt, Al, Si, Ge, C and P, and M is at least one element of Zr, Nb, Ta, Hf, Mo, Ti and V.

A high hardness tool comprising a base material comprising a high hardness amorphous alloy composition containing at least one element of Fe, Co, and Ni as a main component, at least one element of Zr, Nb, Ta, Hf, Mo, Ti and V, and B, wherein the temperature width ΔTx of a supercooled liquid region in 50° C. or more wherein ΔTx is expressed by the equation ΔTx=Tx−Tg wherein Tx indicates the crystallization temperature, and Tg indicates the glass transition temperature, and wherein the composition is expressed by the following composition formula:

• (Fe1−a−bCoaNib)100−x−yMxBy
• wherein 0≦a≦0.29, 0≦b≦0.43, 5 atomic %≦x≦20 atomic %, 10 atomic %≦y≦22 atomic %, and M is at least one element of Zr, Nb, Ta, Hf, Mo, Ti and V.

A high hardness tool comprising a base material comprising a high hardness amorphous alloy composition containing at least one element of Fe, Co, and Ni as a main component, at least one element of Zr, Nb, Ta, Hf, Mo, Ti and V, and B, wherein the temperature width ΔTx of a supercooled liquid region is 50° C. or more, wherein ΔTx is expressed by the equation ΔTx=Tx−Tg, wherein Tx indicates the crystallization temperature, and Tg indicates the glass transition temperature, and wherein the composition is expressed by the following formula:

• (Fe1−a−bCoaNib)100−x−y−zMxByTz
• wherein 0≦a≦0.29, 0≦b≦0.43, 5 atomic %≦x≦20 atomic %, 10 atomic %≦y≦22 atomic %, 0 atomic %≦z≦5 atomic %, M is at least one element of Zr, Nb, Ta, Hf, Mo, Ti and V, and T is at least one element of Cr, W, Ru, Rh, Pd, Os, Ir, Pt, Al, Si, Ge, C and P.

A high hardness amorphous alloy comprising a composition containing at least one element of Fe, Co, and Ni as a main component, at least one element of Zr, Nb, Ta, Hf, Mo, Ti and V, and B, wherein the temperature width ΔTx of a supercooled liquid region is 50° C. or more, wherein ΔTx is expressed by the equation ΔTx=Tx−Tg, wherein Tx indicates the crystallization temperature, and Tg indicates the glass transition temperature, wherein the composition has a Vickers hardness of about 1300 to about 1500 Hv, and wherein the composition is expressed by the following formula:

• (Fe1−a−bCoaNib)100−x−y−zMxByTz
• wherein 0≦a≦0.29, 0≦b≦0.43, 5 atomic %≦x≦20 atomic %, 10 atomic %≦y≦22 atomic %, 0 atomic %≦z≦5 atomic %, M is at least one element of Zr, Nb, Ta, Hf, Mo, Ti and V, and T is at least one element of Cr, W, Ru, Rh, Pd, Os, Ir, Pt, Al, Si, Ge, C and P.