US 12,422,506 B2
Magneto-sensitive wire and manufacturing method therefor
Akihiro Shimode, Aichi-ken (JP); and Shunichi Tatematsu, Aichi-ken (JP)
Assigned to AICHI STEEL CORPORATION, Tokai (JP)
Appl. No. 17/791,048
Filed by AICHI STEEL CORPORATION, Tokai (JP)
PCT Filed Feb. 24, 2021, PCT No. PCT/JP2021/006934
§ 371(c)(1), (2) Date Jul. 6, 2022,
PCT Pub. No. WO2021/192792, PCT Pub. Date Sep. 30, 2021.
Claims priority of application No. 2020-052064 (JP), filed on Mar. 24, 2020.
Prior Publication US 2023/0019018 A1, Jan. 19, 2023
Int. Cl. C22C 19/07 (2006.01); C22C 45/04 (2006.01); C22F 1/10 (2006.01); G01R 33/06 (2006.01); H01F 1/10 (2006.01); H01F 1/153 (2006.01)
CPC G01R 33/06 (2013.01) [C22C 19/07 (2013.01); C22C 45/04 (2013.01); C22F 1/10 (2013.01); H01F 1/15316 (2013.01); H01F 1/15341 (2013.01); C22C 2200/02 (2013.01); C22C 2202/02 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A magneto-sensitive wire comprising a Co-based alloy that contains Fe,
the Co-based alloy containing more Fe than that of a reference composition that is amorphous overall and exhibits zero magnetostriction,
the Co-based alloy comprising a composite structure in which crystal grains are dispersed in an amorphous phase, and
the Co-based alloy has an Fe ratio (Fe/(Co+Fe+Ni)) of 6.1% to 9.5%, wherein the Fe ratio is an atomic fraction of an Fe amount with respect to a total amount of a magnetic element group consisting of Co, Fe, and Ni, and
wherein the Co-based alloy contains 0.1 to 3.5 at % of Ni with respect to the total amount of the magnetic element group as a whole.
 
8. A magneto-sensitive wire comprising a Co-based alloy that contains Fe,
the Co-based alloy containing more Fe than that of a reference composition that is amorphous overall and exhibits zero magnetostriction,
the Co-based alloy comprising a composite structure in which crystal grains are dispersed in an amorphous phase, and
the Co-based alloy has an Fe ratio (Fe/(Co+Fe+Ni)) of 6.1% to 9.5%, wherein the Fe ratio is an atomic fraction of an Fe amount with respect to a total amount of a magnetic element group consisting of Co, Fe, and Ni, and
wherein the Co-based alloy further contains 0.1 to 2.3 at % of Mo with respect to the Co-based alloy as a whole.