US 11,810,691 B2
Aluminum base wire
Yusuke Kureishi, Osaka (JP); Akihisa Hosoe, Osaka (JP); Kengo Goto, Osaka (JP); and Yoshimasa Shirai, Osaka (JP)
Assigned to SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka (JP)
Appl. No. 17/434,477
Filed by SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka (JP)
PCT Filed Mar. 17, 2020, PCT No. PCT/JP2020/011822
§ 371(c)(1), (2) Date Aug. 27, 2021,
PCT Pub. No. WO2020/189689, PCT Pub. Date Sep. 24, 2020.
Claims priority of application No. 2019-053850 (JP), filed on Mar. 20, 2019.
Prior Publication US 2022/0139593 A1, May 5, 2022
Int. Cl. C22C 13/00 (2006.01); H01B 5/02 (2006.01); C25D 5/12 (2006.01); C25D 7/06 (2006.01)
CPC H01B 5/02 (2013.01) [C22C 13/00 (2013.01); C25D 5/12 (2013.01); C25D 7/06 (2013.01)] 8 Claims
OG exemplary drawing
 
1. An aluminum base wire comprising:
a core wire made of pure aluminum or an aluminum alloy; and
a coating layer provided on an outer periphery of the core wire,
wherein the coating layer includes
a first layer provided on the outer periphery of the core wire,
a second layer provided on an outer periphery of the first layer, and
a third layer provided on an outer periphery of the second layer,
the first layer is composed of at least one metal selected from the group consisting of nickel, iron, cobalt, chromium, copper, silver, and alloys of these elements,
the second layer is composed of metals that include zinc and tin,
the third layer is composed of at least one metal selected from the group consisting of tin and tin alloys that contain substantially no zinc, and
a zinc content in the second layer is 15 atomic % or more and 60 atomic % or less.