Process for removing aluminum-silicon coatings from metallic structures, and related processes for preparing magnetic components
US-9803139-B1 · Oct 31, 2017 · US
Graded magnetic component and method of forming
US10229777B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10229777-B2 |
| Application number | US-201615078516-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 23, 2016 |
| Priority date | Oct 31, 2013 |
| Publication date | Mar 12, 2019 |
| Grant date | Mar 12, 2019 |
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Abstract
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A magnetic component including at least one region is disclosed. The at least one region includes nitrogen and a concentration of the nitrogen in the at least one region is graded across a dimension of the at least one region. Further, a saturation magnetization in the at least one region is graded across the dimension of the at least one region. Further, a method of varying the magnetization values in at least one region of the magnetic component is disclosed.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for varying magnetization values in at least one region of a magnetic component, comprising: disposing a coating on at least a portion of the magnetic component to form a mask, wherein the coating comprises a chemical composition that discourages nitrogen diffusion into the magnetic component; and heat-treating the magnetic component in a nitrogen-rich atmosphere at a temperature greater than 700° C. to form the at least one region in the magnetic component, wherein the at least one region is characterized by a gradient in nitrogen content and a gradient in saturation magnetization across a dimension of the at least one region, wherein the gradient in nitrogen content in the at least one region is achieved by varying a coating thickness. 2. The method of claim 1 , wherein the coating thickness is varied by controlling a deposition parameter used for disposing the coating. 3. The method of claim 1 , wherein the variation in the coating thickness in the at least one region is achieved by selectively removing portions of the coating before the step of heat-treating. 4. The method of claim 1 , wherein a concentration of carbon in the at least one region is controlled to be less than about 0.05 weight % of the at least one region. 5. The method of claim 1 , further comprising forming a first region and a second region in the magnetic component wherein the at least one region is interposed between the first region and the second region, and wherein the first region has a saturation magnetization greater than the saturation magnetization of the at least one region, and the at least one region has the saturation magnetization greater than a saturation magnetization of the second region. 6. The method of claim 5 , wherein the first region has a nitrogen content less than the nitrogen content of the at least one region, and the at least one region has the nitrogen content less than a nitrogen content of the second region.
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- What does patent US10229777B2 cover?
- A magnetic component including at least one region is disclosed. The at least one region includes nitrogen and a concentration of the nitrogen in the at least one region is graded across a dimension of the at least one region. Further, a saturation magnetization in the at least one region is graded across the dimension of the at least one region. Further, a method of varying the magnetization v…
- Who is the assignee on this patent?
- Gen Electric
- What technology area does this patent fall under?
- Primary CPC classification H01F7/021. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Mar 12 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).