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Stainless steel sheet for fuel cell separators and method for producing the same
US10714764B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10714764-B2 |
| Application number | US-201616064633-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 15, 2016 |
| Priority date | Dec 24, 2015 |
| Publication date | Jul 14, 2020 |
| Grant date | Jul 14, 2020 |
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- Title
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Abstract
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A stainless steel sheet for fuel cell separators including a substrate made of stainless steel sheet, and low-electrical-resistivity metal particles, where the substrate has a textured structure formed on a surface thereof with the average interval between the projected parts of the textured structure being 10 nm or more and 300 nm or less, the low-electrical-resistivity metal particles have an average particle size of 50 nm to 1.0 μm, the low-electrical-resistivity metal particles are attached to the surface of the substrate having the textured structure at a density of 1.0 particle or more for 1 μm2, and a ratio of the average particle size of the low-electrical-resistivity metal particles to the average interval between the projected parts is 1.0 to 15.0.
First claim
Opening claim text (preview).
The invention claimed is: 1. A stainless steel sheet for fuel cell separators comprising a substrate made of stainless steel sheet, and low-electrical-resistivity metal particles, wherein the substrate has a textured structure on a surface thereof, where the textured structure includes projected parts and recessed parts, and an average interval between the projected parts is 10 nm or more and 300 nm or less, the low-electrical-resistivity metal particles have an average particle size of 50 nm to 1.0 μm, and the low-electrical-resistivity metal particles are attached to the surface of the substrate having the textured structure at a density of 1.0 particle or more for 1 μm 2 , and a ratio of the average particle size of the low-electrical-resistivity metal particles to the average interval between the projected parts is 1.0 to 15.0. 2. A method for producing the stainless steel sheet for fuel cell separators according to claim 1 , comprising subjecting a substrate made of stainless steel sheet to anode electrolytic treatment and then to plating treatment, where the plating treatment is performed in a solution containing low-electrical-resistivity metal ions.
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Classifications
Manufacturing or production processes characterised by the final manufactured product · CPC title
- H01M8/0247Primary
characterised by the form (characterised by a channel configuration H01M8/0258) · CPC title
in the form of mixtures · CPC title
in the form of mixtures · CPC title
Microstructure of the layers, e.g. mixed structure · CPC title
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- What does patent US10714764B2 cover?
- A stainless steel sheet for fuel cell separators including a substrate made of stainless steel sheet, and low-electrical-resistivity metal particles, where the substrate has a textured structure formed on a surface thereof with the average interval between the projected parts of the textured structure being 10 nm or more and 300 nm or less, the low-electrical-resistivity metal particles have an…
- Who is the assignee on this patent?
- Jfe Steel Corp
- What technology area does this patent fall under?
- Primary CPC classification H01M8/0247. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jul 14 2020 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).