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US 7,077,919 B2Granted
Magnetic core insulation
AssigneeMagnetic Metals Corporation
InventorsRichard Wood, Richard Lathlaen, William C. Beckham
Life of this patent
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Abstract
Disclosed herein is an insulating material between adjacent metal layers of a soft magnetic core, and a process for forming this insulating material. The insulating material is composed of the native metal oxides of the metallic core material.
Claims13
A method of providing an iron oxide coating to a laminated magnetic assembly which is formed in part of iron, comprising:
- providing a ferric oxide (F2O3) source;
- injecting steam through the ferric oxide source, such that the steam becomes infused with ferric oxide cations;
- injecting the infused steam into a heated chamber housing the laminated magnetic assembly;
- and
- oxidizing the iron of the laminated magnetic assembly in the presence of the steam, the heat and the ferric oxide cations.
2 more elements
A method of providing an iron oxide coating to a laminated magnetic assembly which is formed in part of iron, comprising:
- providing a source of [FexOy]+z cations in a transference matrix where 1≦x≦2, 1≦y≦3 and 1≦z≦3;
- injecting steam through the transference matrix, such that the steam becomes infused with ferric oxide cations;
- injecting the infused steam into a heated chamber housing the laminated magnetic assembly;
- and
- oxidizing the iron of the laminated magnetic assembly in the presence of the steam, the heat and the ferric oxide cations.
2 more elements
Dependencies are inferred from the claim text.