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US 12,410,509 B2Granted
Copper-coated aluminum wire material and production method therefor
AssigneeNational Institute for Materials Science
InventorsAkihiro Kikuchi, Hitoshi Kitaguchi, Yasuo Iijima, Kazuto Hirata
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Abstract
The present disclosure provides a copper-coated aluminum wire material including an aluminum wire material and a copper thin film coating the aluminum wire material that a space factor of the thin copper film is in the range of 0.2% to 4%.
Claims20
A copper-coated aluminum wire material comprising:
- an aluminum wire material made of aluminum or an aluminum alloy;
- and
- a copper thin film coating the aluminum wire material, wherein
- a space factor of the copper thin film is in a range of 0.2% or more to 4% or less, and
- an adhesiveness between the aluminum wire material and the copper thin film according to a scratch test conforming to JIS R 3255 satisfies 10 mN or more.
2 more elements
Dependencies are inferred from the claim text.