Clad material

Patent metadata

Field	Value
Publication number	US-9979004-B2
Application number	US-201113701230-A
Country	US
Kind code	B2
Filing date	Jun 2, 2011
Priority date	Jun 2, 2010
Publication date	May 22, 2018
Grant date	May 22, 2018

Abstract

The clad material comprises outer layers each consisting of Ni or Ni alloy and a base layer consisting of Cu or Cu alloy, and is characterized in that peeling-off at a clad boundary is not recognized in cross section observation made after the clad material has been subjected to a 90° reverse bend test ten times, and the number of reverse bend cycles before rupture is 17 cycles or more. The clad material has with both of excellent corrosion resistance against electrolytic solution and high electric conductivity.

First claim

What is claimed is:

1. A clad material which comprises outer layers each consisting of Ni or Ni alloy and a base layer consisting of Cu or Cu alloy, wherein the clad material having a total thickness of 0.2 mm or smaller, and wherein peeling-off at a clad boundary is not recognized in cross section observation made after the clad material has been subjected to a 90° reverse bend test ten times, and the number of reverse bend cycles before rupture is 17 cycles or more,
wherein a coefficient of variation in the outer layer thickness is 5 or less.

2. A clad material which comprises outer layers each consisting of Ni or Ni alloy and a base layer consisting of Cu or Cu alloy, wherein the clad material having a total thickness of more than 0.2 mm, and wherein peeling-off at a clad boundary is not recognized in visual cross section observation made after the clad material has been subjected to a 90° bend test with a bend radius being two times the clad material thickness,
wherein a coefficient of variation in the outer layer thickness is 5 or less.

3. A clad material comprising outer layers each consisting of Ni or Ni alloy and a base layer consisting of Cu or Cu alloy, wherein a peel strength of Ni—Cu is 4 N/mm or higher,
wherein a coefficient of variation in the outer layer thickness is 5 or less.

4. The clad material according to claim 1 , wherein a porosity of the clad material is 20% or less.

5. The clad material according to claim 1 , wherein a coefficient of variation in outer layer thickness is 4 or less.

6. The clad material according to claim 1 , wherein the clad material comprises a cut strip, the cut strip having a cut surface, a Ni layer other than said outer Ni layer having a thickness of 10 μm or smaller is formed on the cut surface of the clad material.

7. The clad material according to claim 2 , wherein a porosity of the clad material is 20% or less.

8. The clad material according to claim 3 , wherein a porosity of the clad material is 20% or less.

9. The clad material according to claim 2 , wherein a coefficient of variation in outer layer thickness is 4 or less.

10. The clad material according to claim 3 , wherein a coefficient of variation in outer layer thickness is 4 or less.

11. The clad material according to claim 2 , wherein the clad material comprises a cut strip, the cut strip having a cut surface, a Ni layer other than said outer Ni layer having a thickness of 10 μm or smaller is formed on the cut surface of the clad material.

12. The clad material according to claim 3 , wherein the clad material comprises a cut strip, the cut strip having a cut surface, a Ni layer other than said outer Ni layer having a thickness of 10 μm or smaller is formed on the cut surface of the clad material.

Assignees

• Yoshida Kentarou
• Arizono Daisaku
• Yoshida Syuji
• Kita Hayato
• Takeuchi Kouichi
• Shibuya Masayuki
• Kaminaka Hideya
• Nippon Steel & Sumitomo Metal Corp

Inventors

• Yoshida Kentarou
• Arizono Daisaku
• Yoshida Syuji
• Kita Hayato
• Takeuchi Kouichi
• Shibuya Masayuki
• Kaminaka Hideya

Classifications

• B23K11/002 Primary

  specially adapted for particular articles or work · CPC title

• H01M50/534

  characterised by the material of the leads or tabs · CPC title

• B23K2201/38

  Operations & Transport · mapped topic

• B32B15/01 Primary

  all layers being exclusively metallic {(making layered metal workpieces by pressure cladding B23K20/22; making coatings with a metallic material characterised by its composition C23C30/00)} · CPC title

• H01M2/26 Primary

  Electricity · mapped topic