TW200517530A - Pretreatment for electroplating on cast aluminum alloy part - Google Patents
Pretreatment for electroplating on cast aluminum alloy partInfo
- Publication number
- TW200517530A TW200517530A TW092133268A TW92133268A TW200517530A TW 200517530 A TW200517530 A TW 200517530A TW 092133268 A TW092133268 A TW 092133268A TW 92133268 A TW92133268 A TW 92133268A TW 200517530 A TW200517530 A TW 200517530A
- Authority
- TW
- Taiwan
- Prior art keywords
- electroplating
- aluminum alloy
- base material
- cast aluminum
- cast
- Prior art date
Links
Landscapes
- Electroplating Methods And Accessories (AREA)
Abstract
There are rather more difficulties for electroplating aluminum and its alloys than other metal material, which is mainly due to defective adhesion between the aluminum base material and the electroplated layer, leading to easy delamination of the electroplated layer. This invention provides a surface pretreatment method which is effective for cast aluminum alloy parts for electroplating processes. Oxide films of Al2O3 or MgAl2O4 are removed from the cast part surface. A mixture solution of HNO3, HF and H2SO4 is used to remove alloy and create pores on the surface of the cast aluminum alloy part by erosion. The part is then place into a mixture solution of potassium hydroxide and isopropanol for etching silicon so that the eutectic silicon structure is etched deeply to make the pores in the part deeper. Therefore, after electroplating, tree root like contact faces are present between the bottom nickel and base material of the cast aluminum alloy part. These tree root like contact faces result from the vacancies left by the etched silicon component on the surface during etching treatment, which provide good adhesion condition and thus improve adhesion between the aluminum base material and the electroplated layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW92133268A TWI247826B (en) | 2003-11-26 | 2003-11-26 | Pre-treatment for plating on casting aluminum alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW92133268A TWI247826B (en) | 2003-11-26 | 2003-11-26 | Pre-treatment for plating on casting aluminum alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW200517530A true TW200517530A (en) | 2005-06-01 |
| TWI247826B TWI247826B (en) | 2006-01-21 |
Family
ID=37400642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW92133268A TWI247826B (en) | 2003-11-26 | 2003-11-26 | Pre-treatment for plating on casting aluminum alloy |
Country Status (1)
| Country | Link |
|---|---|
| TW (1) | TWI247826B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI575623B (en) * | 2015-12-10 | 2017-03-21 | 南茂科技股份有限公司 | Bump structure and manufacturing method thereof |
| TWI670396B (en) * | 2018-04-11 | 2019-09-01 | 國立勤益科技大學 | Surface treatment method for aluminum alloy |
-
2003
- 2003-11-26 TW TW92133268A patent/TWI247826B/en active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI575623B (en) * | 2015-12-10 | 2017-03-21 | 南茂科技股份有限公司 | Bump structure and manufacturing method thereof |
| TWI670396B (en) * | 2018-04-11 | 2019-09-01 | 國立勤益科技大學 | Surface treatment method for aluminum alloy |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI247826B (en) | 2006-01-21 |
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