Aqueous dip-coating composition for electroconductive substrates, comprising bismuth and a phosphorus-containing, amine-blocked compound
US-2016369114-A1 · Dec 22, 2016 · US
Method of preparing a magnesium alloy substrate for a surface treatment
US9580830B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9580830-B2 |
| Application number | US-95409110-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 24, 2010 |
| Priority date | Sep 10, 2010 |
| Publication date | Feb 28, 2017 |
| Grant date | Feb 28, 2017 |
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Abstract
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A method of preparing a magnesium alloy substrate for an electroless electro-deposition surface treatment includes cleaning the magnesium alloy substrate in a wet solution, whereby a magnesium hydroxide layer is formed on an outer surface of the magnesium alloy substrate, and heating the magnesium alloy substrate to a temperature sufficient to convert the magnesium hydroxide layer to a magnesium oxide layer.
First claim
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The invention claimed is: 1. A method of applying a surface treatment to a magnesium alloy substrate, the method comprising: cleaning the magnesium alloy substrate with a wet solution, whereby a magnesium hydroxide layer is formed on the magnesium alloy substrate; heating the magnesium alloy substrate to a temperature of at least two hundred degrees Celsius (200° C.) to transform the magnesium hydroxide layer into a magnesium oxide layer; and applying a coating of an electro-deposition solution to the magnesium alloy substrate in the absence of an applied electrical charge in both the magnesium alloy substrate and the electro-deposition solution. 2. A method as set forth in claim 1 wherein cleaning the magnesium alloy substrate with a wet solution is further defined as cleaning the magnesium alloy substrate with an acidic water based cleaning solution. 3. A method as set forth in claim 1 wherein cleaning the magnesium alloy substrate with a wet solution is further defined as cleaning the magnesium alloy substrate with a basic water based cleaning solution. 4. A method as set forth in claim 1 wherein cleaning the magnesium alloy substrate with a wet solution includes submerging the magnesium alloy substrate in a bath of the wet solution. 5. A method as set forth in claim 1 wherein heating the magnesium alloy substrate to transform the magnesium hydroxide layer into the magnesium oxide layer includes heating the magnesium alloy substrate to a temperature of at least three hundred fifty degrees Celsius (350° C.). 6. A method as set forth in claim 1 wherein applying a coating of an electro-deposition solution to the magnesium alloy substrate in the absence of an applied electrical charge in both the magnesium alloy substrate and the electro-deposition solution includes submerging the magnesium alloy substrate in a bath of the electro-deposition solution to fully coat the magnesium alloy substrate. 7. A method of preparing a magnesium alloy substrate for a surface treatment, the method comprising: cleaning the magnesium alloy substrate with a wet solution, whereby a magnesium hydroxide layer is formed on the magnesium alloy substrate; and heating the magnesium alloy substrate to a temperature of at least two hundred degrees Celsius (200° C.) to transform the magnesium hydroxide layer into a magnesium oxide layer. 8. A method as set forth in claim 7 wherein cleaning the magnesium alloy substrate with a wet solution is further defined as cleaning the magnesium alloy substrate with an acidic water based cleaning solution. 9. A method as set forth in claim 7 wherein cleaning the magnesium alloy substrate with a wet solution is further defined as cleaning the magnesium alloy substrate with a basic water based cleaning solution. 10. A method as set forth in claim 7 wherein cleaning the magnesium alloy substrate with a wet solution includes submerging the magnesium alloy substrate in a bath of the wet solution. 11. A method as set forth in claim 7 wherein heating the magnesium alloy substrate to transform the magnesium hydroxide layer into the magnesium oxide layer includes heating the magnesium alloy substrate to a temperature of at least three hundred fifty degrees Celsius (350° C.).
Assignees
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Classifications
Auto-deposited coatings, i.e. autophoretic coatings · CPC title
ceramic layer · CPC title
- C25D13/20Primary
Pretreatment · CPC title
based on light metals · CPC title
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- What does patent US9580830B2 cover?
- A method of preparing a magnesium alloy substrate for an electroless electro-deposition surface treatment includes cleaning the magnesium alloy substrate in a wet solution, whereby a magnesium hydroxide layer is formed on an outer surface of the magnesium alloy substrate, and heating the magnesium alloy substrate to a temperature sufficient to convert the magnesium hydroxide layer to a magnesiu…
- Who is the assignee on this patent?
- Song Guangling, Gm Global Tech Operations Llc
- What technology area does this patent fall under?
- Primary CPC classification C25D13/20. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Feb 28 2017 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).