Methods for electropolishing and coating aluminum on air and/or moisture sensitive substrates
US-2021340688-A1 · Nov 4, 2021 · US
Electrolyte for electropolishing titanium alloys
US2024102198A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2024102198-A1 |
| Application number | US-202017767557-A |
| Country | US |
| Kind code | A1 |
| Filing date | Nov 10, 2020 |
| Priority date | Dec 10, 2019 |
| Publication date | Mar 28, 2024 |
| Grant date | — |
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Abstract
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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 %
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1 . 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 %. 2 . The electrolyte according to claim 1 , wherein the content of methanesulfonic acid is in the range of more than 1 vol. and less than 5 vol %. 3 . The electrolyte according to claim 1 , wherein the diol is selected from the group consisting of 1,2-propanediol, 1,3-propanediol, ethylene glycol, 1,2-butanediol, 1,3-butanediol, 1,4-butanediol, 2,3-butanediol, 1,2-pentanediol, 1,3-pentanediol, 1,4-pentanediol, 1,5-pentanediol, 2,3-pentanediol, 2,4-pentanediol. 4 . The electrolyte according to claim 1 , wherein the polyalcohol is selected from the group of triols including a linear C3 to C5 carbon chain. 5 . The electrolyte according to claim 1 , wherein the polyalcohol is glycerol. 6 . The electrolyte according to claim 1 , having the following composition: 1 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 . An electropolishing method for a workpiece made of metal, comprising: providing an electrolyte according to claim 1 ; introducing a workpiece made of titanium or a titanium alloy, into the electrolyte; connecting the workpiece to the anode; and applying a voltage. 8 . An electrolyte, consisting of: 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 %. 9 . The electrolyte according to claim 8 , wherein the content of methanesulfonic acid is in the range of more than 1 vol. and less than 5 vol %. 10 . The electrolyte according to claim 8 , wherein the diol is selected from the group consisting of 1,2-propanediol, 1,3-propanediol, ethylene glycol, 1,2-butanediol, 1,3-butanediol, 1,4-butanediol, 2,3-butanediol, 1,2-pentanediol, 1,3-pentanediol, 1,4-pentanediol, 1,5-pentanediol, 2,3-pentanediol, 2,4-pentanediol. 11 . The electrolyte according to claim 8 , wherein the polyalcohol is selected from the group of triols including a linear C3 to C5 carbon chain. 12 . The electrolyte according to claim 8 , wherein the polyalcohol is glycerol. 13 . The electrolyte according to claim 8 , having the following composition: 1 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.
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- What does patent US2024102198A1 cover?
- 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 d…
- Who is the assignee on this patent?
- Biotronik Ag
- What technology area does this patent fall under?
- Primary CPC classification C25F3/26. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Mar 28 2024 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). 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).