Metal displacement solution, method for surface treatment of aluminum or aluminum alloy
US-2023151493-A1 · May 18, 2023 · US
Etchant and method of surface treatment of aluminum or aluminum alloy
US2023407487A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2023407487-A1 |
| Application number | US-202318336944-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jun 16, 2023 |
| Priority date | Jun 16, 2022 |
| Publication date | Dec 21, 2023 |
| Grant date | — |
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- Title
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Abstract
Official abstract text for this publication.
The present invention aims to provide an etchant that can provide good deposition of a metal plating such as a nickel plating, despite its acidity, and a method of surface treatment of aluminum or an aluminum alloy using the etchant. Included is an etchant containing a zinc compound and a fluorine compound and having a pH of 4.5 to 6.5.
First claim
Opening claim text (preview).
1 . An etchant, comprising at least one zinc compound and at least one fluorine compound, the etchant having a pH of 4.5 to 6.5. 2 . The etchant according to claim 1 , wherein the etchant comprises the zinc compound in an amount corresponding to a zinc concentration of 1.0 to 10 g/L. 3 . The etchant according to claim 1 , wherein the etchant comprises the fluorine compound in an amount corresponding to a fluorine concentration of 1.0 to 20.5 g/L. 4 . The etchant according to claim 1 , wherein the etchant is for treating aluminum or an aluminum alloy. 5 . A method of surface treatment of aluminum or an aluminum alloy, the method comprising a treatment including: bringing a workpiece having aluminum or an aluminum alloy on its surface into contact with the etchant according to claim 1 for etching; and pickling the etched workpiece. 6 . The method of surface treatment of aluminum or an aluminum alloy according to claim 5 , wherein the treatment is repeated at least twice. 7 . The method of surface treatment of aluminum or an aluminum alloy according to claim 6 , wherein the etchant used in each repetition of the treatment has the same composition. 8 . The method of surface treatment of aluminum or an aluminum alloy according to claim 5 , wherein the method comprises zinc displacement after the treatment. 9 . The method of surface treatment of aluminum or an aluminum alloy according to claim 6 , wherein the method comprises zinc displacement after the treatment. 10 . The method of surface treatment of aluminum or an aluminum alloy according to claim 8 , wherein the method comprises forming a metal plating film after the zinc displacement. 11 . The method of surface treatment of aluminum or an aluminum alloy according to claim 9 , wherein the method comprises forming a metal plating film after the zinc displacement.
Assignees
Inventors
Classifications
- C23F1/20Primary
for etching aluminium or alloys thereof · CPC title
Coating with nickel, cobalt or mixtures thereof with phosphorus or boron (C23C18/50 takes precedence) · CPC title
aluminium · CPC title
Aluminium · CPC title
Use of metal, e.g. activation, sensitisation with noble metals · CPC title
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Frequently asked questions
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- What does patent US2023407487A1 cover?
- The present invention aims to provide an etchant that can provide good deposition of a metal plating such as a nickel plating, despite its acidity, and a method of surface treatment of aluminum or an aluminum alloy using the etchant. Included is an etchant containing a zinc compound and a fluorine compound and having a pH of 4.5 to 6.5.
- Who is the assignee on this patent?
- Uemura Kogyo Kk
- What technology area does this patent fall under?
- Primary CPC classification C23F1/20. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Dec 21 2023 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 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).