Method for removal of metal from a workpiece
OwnerSukanta Ghosh, Brian Blakey +1inventors
InventorsSukanta Ghosh, Brian Blakey, Thodla Ramgopal
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Abstract
A method for removal of material from a workpiece is disclosed. The method comprises the steps of providing a workpiece; providing an electrolyte, the electrolyte comprising hydrogen peroxide, in an amount of at least about 6 weight percent, and a source of hydroxyl ions; and contacting the workpiece with the electrolyte. The method provides the key advantage of high quality surface finish of the workpiece.
Claims18
A method for removal of material from a workpiece, the method comprising the steps of:
- (a) providing a workpiece;
- (b) providing an electrolyte, said electrolyte comprising hydrogen peroxide, in an amount of at least about 6 weight percent, and a source of hydroxyl ions;
- and
- (c) contacting said workpiece with said electrolyte.
A method for removing material from a workpiece, the method comprising the steps of:
- (a) providing a workpiece, wherein said workpiece comprises Ti;
- (b) providing an electrolyte, said electrolyte comprising:
- 1. water,
- 2. hydrogen peroxide, in a concentration of at least about 6 weight percent, and
- 3. a hydroxide of at least one selected from the group consisting of Na, K, Li, Mg, Ca, NH4, wherein said hydroxide is present in a range from about 0.5M to about 5M;
- and
- (c) contacting said workpiece with said electrolyte.
A method for removing material from a workpiece, the method comprising the steps of:
- (a) providing an anode in electrical communication with a cathode, wherein said anode comprises a workpiece comprising titanium;
- (b) providing an electrolyte, said electrolyte comprising
- 1. water,
- 2. hydrogen peroxide, in a concentration of at least about 6 weight percent, and
- 3. a hydroxide of at least one selected from the group consisting of Na, K, Li, Mg, Ca, NH4 wherein said hydroxide is present in a range from about 0.5M to about 5M;
- (c) immersing said anode and said cathode in said electrolyte;
- and
- (d) flowing an electric current having an anodic current density in the range from about 100 mA/cm2 to about 150 mA/cm2 between said anode and said cathode.
Dependencies are inferred from the claim text.