JPS5591995A - Forming method of gold layer - Google Patents
Forming method of gold layerInfo
- Publication number
- JPS5591995A JPS5591995A JP16301878A JP16301878A JPS5591995A JP S5591995 A JPS5591995 A JP S5591995A JP 16301878 A JP16301878 A JP 16301878A JP 16301878 A JP16301878 A JP 16301878A JP S5591995 A JPS5591995 A JP S5591995A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- gold
- gold layer
- primary
- plating layer
- 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.)
- Pending
Links
Abstract
PURPOSE:To make the gold layer formed superior in corrosion resistance by forming a primary gold layer on the object article, firmly bonding the same through heating by way of a sinter layer then applying a secondary gold layer. CONSTITUTION:A primary gold plating layer 10 of thicknesses 0.5-1.5mu is formed to the surface of the object article composed of a metal outer ring 1 and lead wires 6, 7, 8. Thence, it is heated for 3-10min. at 300-450 deg.C in a neutral atmosphere and this causes part of the primary gold plating layer to enter the crystal grains of the metal outer ring 1 and lead wires 6, 7, 8, thereby forming a sinter layer 11 and resulting in increased adhesion force and disappearance of pinholes, etc. Thence, a secondary gold plating layer 12 of thicknesses 1-5mu is formed on the primary gold layer 10 to make the total tickness of the plating layer specified 1.27-5.08mu. By this method, the gold layer of superior corrosion resistance is formed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16301878A JPS5591995A (en) | 1978-12-28 | 1978-12-28 | Forming method of gold layer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16301878A JPS5591995A (en) | 1978-12-28 | 1978-12-28 | Forming method of gold layer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5591995A true JPS5591995A (en) | 1980-07-11 |
Family
ID=15765620
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16301878A Pending JPS5591995A (en) | 1978-12-28 | 1978-12-28 | Forming method of gold layer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5591995A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4693939A (en) * | 1983-06-03 | 1987-09-15 | Minnesota Mining And Manufacturing Company | Article coated with copolymer of poly(vinyl alcohol) |
-
1978
- 1978-12-28 JP JP16301878A patent/JPS5591995A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4693939A (en) * | 1983-06-03 | 1987-09-15 | Minnesota Mining And Manufacturing Company | Article coated with copolymer of poly(vinyl alcohol) |
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