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Found results for
 patents
1.
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ELECTROLYTE SOLUTION AND ELECTROCHEMICAL SURFACE MODIFICATION METHODS
| Application Number |
US2010057687 |
| Publication Number |
2012/071030 |
| Status |
In Force |
| Filing Date |
2010-11-22 |
| Publication Date |
2012-05-31 |
| Owner |
METCON, LLC (USA)
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| Inventor |
- Clasquin, James, L.
- Christensen, Thomas, J.
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Abstract
An aqueous electrolyte solution including a concentration of citric acid in the range of about 1.6 g/L to about 982 g/L and an effective concentration of ammonium bifluoride (ABF), and being substantially free of a strong acid. Methods of treating the surface of a non-ferrous metal workpiece include exposing the surface to a bath of an aqueous electrolyte solution including a concentration of citric acid less than or equal to about 300 g/L and a concentration of ammonium bifluoride greater than or equal to about 10 g/L, and having no more than about 3.35 g/L of a strong acid, controlling the temperature of the bath to be greater than or equal to about 54 °C, connecting the workpiece to the anode of a DC power supply and immersing a cathode of the DC power supply in the bath, and applying a current across the bath.
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2.
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ELECTROLYTE SOLUTION AND METHOD OF REMOVING HYDROGEN FROM METALS
| Application Number |
US2011061707 |
| Publication Number |
2012/071345 |
| Status |
In Force |
| Filing Date |
2011-11-21 |
| Publication Date |
2012-05-31 |
| Owner |
METCON LLC (USA)
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| Inventor |
- Clasquin, James, L.
- Faller, Kurt
- Christensen, Thomas, J.
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Abstract
A method of removing hydrogen from the surface of a non-ferrous metal workpiece, including exposing the surface to a bath of an aqueous electrolyte solution including a concentration of citric acid from about 1.665 g/L to about 982 g/L and a concentration of ammonium bifluoride less than or equal to about 360 g/L, and being substantially free of a strong acid; controlling the temperature of the bath to be about -2 °C to about 90 °C; connecting the workpiece to the anode of a DC power supply and immersing a cathode of the DC power supply in the bath; and applying a current across the bath at a voltage and a current density measured as current per surface area of the workpiece.
IPC Classes ?
- C25F 3/26 - Polishing of heavy metals of refractory metals
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3.
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ELECTROLYTE SOLUTION AND ELECTROPOLISHING METHODS
| Application Number |
US2010057672 |
| Publication Number |
2011/063353 |
| Status |
In Force |
| Filing Date |
2010-11-22 |
| Publication Date |
2011-05-26 |
| Owner |
METCON, LLC (USA)
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| Inventor |
- Clasquin, James, L.
- Christensen, Thomas, J.
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Abstract
An aqueous electrolyte solution including a concentration of citric acid in the range of about 1.6 g/L to about 982 g/L and an effective concentration of ammonium bifluoride (ABF), and being substantially free of a strong acid. Methods of micropolishing a surface of a non-ferrous metal workpiece including exposing the surface to a bath of an aqueous electrolyte solution including a concentration of citric acid in the range of about 1.6 g/L to about 780 g/L and a concentration of ammonium bifluoride in the range of about 2 g/L to about 120 g/L and having no more than about 3.35 g/L of a strong acid, controlling the temperature of the bath to be between the freezing point and the boiling point of the solution, connecting the workpiece to an anodic electrode of a DC power supply and immersing a cathodic electrode of the DC power supply in the bath, and applying a current across the bath.
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