High temperature insulated aluminum conductor

A technology of conductors and electric conductors, applied in the field of high-temperature insulated aluminum conductors

Inactive Publication Date: 2017-08-29
HENKEL KGAA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Insulating metal oxide coating is chemically bonded to aluminum or aluminum alloy conductors

Method used

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  • High temperature insulated aluminum conductor
  • High temperature insulated aluminum conductor
  • High temperature insulated aluminum conductor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] Aluminum wires are immersed in an electrolyte containing dissolved Ti, phosphate and etchant. The diameter of the aluminum wire was 0.76 mm and its residence time in the bath was 10 seconds at 490 volts (peak voltage) and 185 amperes. Remove the wire from the electrolyte bath and measure the coating thickness and contents. There is about 10 microns of titanium dioxide-containing electroceramic coating.

[0085] The titanium dioxide coated wires were tested in comparison to two commercially available reference copper wires conventionally coated by the manufacturer with an insulating coating. Copper Wire Reference 1 is a 0.74 mm diameter copper magnet wire coated with an organic insulating coating. Wires were removed from the coils of the electric drill motor of an 18V cordless Craftsman brand drill available from Sears. Copper Wire Reference 2 is a commercially available copper magnet wire with a diameter of 0.66 mm coated with an organic insulating coating. Wires ar...

Embodiment 2

[0092] Insulation tests and hot spot tests were performed on electrical conductors with coatings of the present disclosure, wherein a second insulating organic layer was applied to the outer surface of the electroceramic coating; The electrical conductors of the layers are subjected to insulation tests and hot spot tests.

[0093] Aluminum wires are immersed in an electrolyte containing dissolved Ti, phosphate and etchant. The diameter of the aluminum wire was 0.76 mm and its residence time in the bath was 10 seconds at 410 volts (peak voltage). Remove the wire from the electrolyte bath and measure the coating thickness and contents. There was about 10 microns of an electroceramic coating containing titanium dioxide on the aluminum conductor lines. An additional outer insulating organic sheath having a thickness of 0.36 mm was provided on the outer surface of the titanium dioxide-containing coating. The outer insulating organic sheath is ethylene-chlorotrifluoroethylene (EC...

Embodiment 3

[0100] Thermal shock tests were performed on samples of the disclosed coated aluminum alloy conductors having metal oxide coatings comprising titania and alumina and samples of conventional anodized aluminum alloy conductors. A conventional anodized aluminum alloy conductor was anodized in a stage 1 sulfuric acid anodizing process, and the resulting oxide layer had a thickness of about 18 microns on the sample of Comparative Example 3.

[0101] Samples of aluminum alloy wires were immersed in an electrolyte containing dissolved Ti, phosphate and etchant. The aluminum alloy wire samples were 0.76 mm in diameter and had a residence time in the bath of 10 seconds at 410 volts (peak voltage). The aluminum alloy wire samples were removed from the electrolyte bath and the coating thickness and content were measured. On the aluminum alloy wire sample of Example 3, there was about 10 microns of an electroceramic coating containing titanium dioxide.

[0102] The initial resistance of...

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Abstract

The present invention relates to an aluminum or aluminum alloy metal electrical conductor having a high temperature resistant electrically insulating metal oxide coating layer including at least one non-aluminum metal oxide chemically bonded thereto and methods of making and using same.

Description

[0001] Cross-References to Related Applications [0002] This application claims the benefit of U.S. Provisional Application No. 62 / 034,358, filed August 7, 2014, and U.S. Provisional Application No. 62 / 034,308, filed August 7, 2014, the entire disclosures of which are hereby adopted by Incorporated herein by way of incorporation by reference. technical field [0003] Various embodiments of the present invention relate to aluminum and aluminum alloy conductors with electrically insulating coatings. Background technique [0004] Conventional electrical conductors, such as magnet wire, are typically copper wires coated with a thin sheath of polymer insulation, which are flexible so that the insulated wire can be wrapped around a magnet to take advantage of the current flowing through the wire. electricity to generate a magnetic field. It is used in the construction of various devices that change one form of energy to another or that use a magnetic field to change power densi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/29
CPCH01B7/292C25D9/12H01B5/002Y02A30/14H01B1/023H01B3/105H01B7/28H01B7/421H01B9/006H01B7/0045H02K3/02H02K3/30H01B7/02H01B13/0891H01B13/16C25D17/08
Inventor S·E·多兰M·小隆巴尔多E·C·屈恩斯M·W·齐姆M·A·小曼菲
Owner HENKEL KGAA
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