GB1311694A - Process for silver plating alloys - Google Patents
Process for silver plating alloysInfo
- Publication number
- GB1311694A GB1311694A GB1311694DA GB1311694A GB 1311694 A GB1311694 A GB 1311694A GB 1311694D A GB1311694D A GB 1311694DA GB 1311694 A GB1311694 A GB 1311694A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bath
- plating
- cyanide
- sept
- thick
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/34—Pretreatment of metallic surfaces to be electroplated
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electroplating Methods And Accessories (AREA)
- Electroplating And Plating Baths Therefor (AREA)
- Manufacturing Of Printed Wiring (AREA)
Abstract
1311694 Silver plating nickel-iron alloys TELCON METALS Ltd 17 Sept 1971 [18 Sept 1970] 44647/70 Heading C7B Ni-Fe or Ni-Co-Fe (e.g. 29 Ni-17Co-54 Fe) alloy lead frames e.g. 0À01" thick for microelectronic circuits are coated with Ag plate e.g. 0À0003 "thick by electro-chemically cleaning the alloy, e.g. cathodically, in an acid bath e.g. containing 5% nitric acid and o-phosphoric acid, applying thereto a Cu or Ni coating, e. g. by flash plating in a copper cyanide or nickel sulphamate bath, optionally flash Au plating in a cyanide bath, and then Ag plating e. g. in a silver cyanide bath. Additional washing may be carried out prior to cathodic cleaning using e. g. trichlorocthylene for degreasing, then cathodic cleaning in a hot alkaline bath comprising NaOH, Na 3 Po 4 and wetting agent.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4464770 | 1970-09-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1311694A true GB1311694A (en) | 1973-03-28 |
Family
ID=10434194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1311694D Expired GB1311694A (en) | 1970-09-18 | 1970-09-18 | Process for silver plating alloys |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1311694A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109989083A (en) * | 2019-04-28 | 2019-07-09 | 天水华洋电子科技股份有限公司 | Pretreating process is electroplated in the super roughening lead frame of one kind |
-
1970
- 1970-09-18 GB GB1311694D patent/GB1311694A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109989083A (en) * | 2019-04-28 | 2019-07-09 | 天水华洋电子科技股份有限公司 | Pretreating process is electroplated in the super roughening lead frame of one kind |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |