Insulated copper wire and electric coil
AssigneeMitsubishi Materials Corporation
InventorsMakoto Urushihara, Hideaki Sakurai
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Abstract
An insulated copper wire is an insulated copper wire having a copper wire and an insulating film coating a surface of the copper wire, in which the insulating film contains a polymer material having an amide bond, on a peeled surface formed on a surface of the insulated copper wire by peeling off the insulating film, there more copper atoms bonded to a nitrogen atom or a carbon atom than copper atoms bonded to an oxygen atom, an oxygen-containing layer containing 10 atom % or more of oxygen in a depth direction from the peeled surface is formed, and a film thickness of the oxygen-containing layer is in a range of 2 nm or more and 30 nm or less. An electric coil is formed by winding the above-described insulated copper wire.
Claims5
An insulated copper wire comprising:
- a copper wire;
- and
- an insulating film coating a surface of the copper wire,
- wherein the insulating film contains a polymer material having an amide bond, on a peeled surface formed on a surface of the insulated copper wire by peeling off the insulating film, there are more copper atoms bonded to a nitrogen atom or a carbon atom than copper atoms bonded to an oxygen atom,
- an oxygen-containing layer containing 10 atom % or more of oxygen is formed in a depth direction from the peeled surface, and
- a film thickness of the oxygen-containing layer is in a range of 2 nm or more and 30 nm or less.
Dependencies are inferred from the claim text.