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
US12454760B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12454760-B2 |
| Application number | US-202318336944-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 16, 2023 |
| Priority date | Jun 16, 2022 |
| Publication date | Oct 28, 2025 |
| Grant date | Oct 28, 2025 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
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).
The invention claimed is: 1. 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 an etchant to etch the workpiece, the etchant comprising at least one zinc compound and at least one fluorine compound, the etchant having a pH of 4.5 to 6.5; and pickling the etched workpiece. 2. The method of surface treatment of aluminum or an aluminum alloy according to claim 1 , wherein the treatment is repeated at least twice. 3. The method of surface treatment of aluminum or an aluminum alloy according to claim 2 , wherein the etchant used in each repetition of the treatment has the same composition. 4. The method of surface treatment of aluminum or an aluminum alloy according to claim 2 , wherein the method comprises zinc displacement after the treatment. 5. The method of surface treatment of aluminum or an aluminum alloy according to claim 4 , wherein the method comprises forming a metal plating film after the zinc displacement. 6. The method of surface treatment of aluminum or an aluminum alloy according to claim 1 , wherein the method comprises zinc displacement after the treatment. 7. The method of surface treatment of aluminum or an aluminum alloy according to claim 6 , wherein the method comprises forming a metal plating film after the zinc displacement.
Assignees
Inventors
Classifications
aluminium · CPC title
Coating with nickel, cobalt or mixtures thereof with phosphorus or boron (C23C18/50 takes precedence) · CPC title
using reducing agents · CPC title
by chemical pretreatment · CPC title
with acid solutions · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US12454760B2 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 Tue Oct 28 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). 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).