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US 12,338,541 B2Granted
Electrolyte for electropolishing titanium alloys
AssigneeBIOTRONIK SE & Co. KG
InventorRobert Litschko
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Abstract
An electrolyte for electropolishing metal surfaces, in particular workpieces, in particular made of titanium or titanium alloys such as nitinol. The electrolyte composition includes methanesulfonic acid and more than one polyhydric alcohol. The content of methanesulfonic acid is less than 15 vol %, the polyhydric alcohols having at least one diol and at least one polyalcohol. The at least one diol accounts for 20 to 65 vol %, and the at least one polyalcohol accounts for 20 to 65 vol %
Claims13
An electrolyte, comprising:
- methanesulfonic acid;
- and
- more than one polyhydric alcohol,
- the content of methanesulfonic acid being less than 15 vol %, the polyhydric alcohols comprising at least one diol and at least one polyalcohol, wherein the at least one polyalcohol comprises more than two OH groups, wherein the at least one diol accounts for 20 to 65 vol %, and the at least one polyalcohol accounts for 20 to 65 vol %.
1 more element
An electrolyte, comprising:
- methanesulfonic acid;
- and
- more than one polyhydric alcohol,
- the content of methanesulfonic acid being less than 15 vol %, the polyhydric alcohols comprising at least one diol and at least one polyalcohol, wherein the at least one diol accounts for 20 to 65 vol %, and the at least one polyalcohol accounts for 20 to 65 vol %, wherein the polyalcohol is selected from the group of triols including a linear C3 to C5 carbon chain.
1 more element
An electrolyte, comprising:
- methanesulfonic acid;
- and
- more than one polyhydric alcohol,
- the content of methanesulfonic acid being less than 15 vol %, the polyhydric alcohols comprising at least one diol and at least one polyalcohol, wherein the at least one diol accounts for 20 to 65 vol %, and the at least one polyalcohol accounts for 20 to 65 vol %, wherein the polyalcohol is glycerol.
1 more element
An electrolyte, comprising:
- methanesulfonic acid;
- and
- more than one polyhydric alcohol,
- the content of methanesulfonic acid being less than 15 vol %, the polyhydric alcohols comprising at least one diol and at least one polyalcohol, wherein the at least one diol accounts for 20 to 65 vol %, and the at least one polyalcohol accounts for 20 to 65 vol %, having the following composition:
- to 7 vol % methanesulfonic acid;
- and
- 33-60 vol % of a diol;
- and
- 33-60 vol % glycerol,
- wherein the diol is selected from ethylene glycol and 1,2-propanediol.
7 more elements
Dependencies are inferred from the claim text.