CN1295383C - Rose metal coating - Google Patents
Rose metal coating Download PDFInfo
- Publication number
- CN1295383C CN1295383C CNB021208395A CN02120839A CN1295383C CN 1295383 C CN1295383 C CN 1295383C CN B021208395 A CNB021208395 A CN B021208395A CN 02120839 A CN02120839 A CN 02120839A CN 1295383 C CN1295383 C CN 1295383C
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- CN
- China
- Prior art keywords
- metal coating
- rose
- rose metal
- present
- product
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- Electroplating And Plating Baths Therefor (AREA)
Abstract
The present invention discloses a rose metal coating, which is suitable for plating on the surface of mechanical and electronic products, and other metal products. The present invention has the major technique characteristics that a certain content of bismuth is introduced into tin plumbum coating to form the rose metal coating; the rose metal coating comprises the components of the following weight percentage: 84.5 to 96.5% of Sn<2+>, 3 to 15% of Pb<2+> and 0.2 to 0.5% of Bi<3+>. The present invention has the characteristics that the growth of crystal whiskers and low temperature allotropic change can be eliminated effectively during the storage of product, and the storage property of product is improved.
Description
Technical field: the present invention relates to a kind of tin is to close box coating, and it is applicable on mechano-electronic product and other metal products surface.
Background technology: in background technology, easily long whisker and low temperature are allotropic change when depositing for pure tin coating, particularly long whisker, usually make the electronic product components and parts cause short circuit, have a strong impact on reliability of products, bring hidden danger for the quality of product, influence the long storage performance of product.Though the tin lead-coat is salt spray resistance, anti-sulfur dioxide corrosion and brazing property and crystallization is careful, porosity is low preferably, growth to whisker has certain characteristics such as restraining effect, but the inhibition effect to whisker growth is restricted, and anti-low temperature is allotropic change relatively poor.For overcoming these defectives, rose metal coating is developed.
Summary of the invention: technical problem to be solved by this invention provides a kind of rose metal coating, and it can be when product be deposited, and growth and the low temperature of effectively eliminating whisker are allotropic change, improves the long storage performance of product.
The technical solution adopted for the present invention to solve the technical problems is: it is a bismuth element of introducing certain content in the plumbous coating layer of tin, constitutes rose metal coating, and it is by following composition (weight percent):
Sn
2+ 84.5～96.5％ Pb
2+ 3～15％
Bi
3+ 0.2～0.5％
Form.
The present invention compares the beneficial effect that is produced with background technology:
1, owing in the plumbous coating layer of tin, introduces the bismuth element of certain content, constitute rose metal coating, and constitute rose metal coating, so it can be when product be deposited by above-mentioned weight percent, growth and the low temperature of effectively eliminating whisker are allotropic change, improve the long storage performance of product.
Embodiment: rose metal coating of the present invention, it can be by following composition (weight percent):
Sn
2+ 86.7％ Pb
2+ 13％
Bi
3+ 0.3％
Form.
Rose metal coating of the present invention, it also can be by following composition (weight percent):
Sn
2+ 90.65％ Pb
2+ 9％
Bi
3+ 0.35％
Form.
Rose metal coating of the present invention, it also can be by following composition (weight percent):
Sn
2+ 94.6％ Pb
2+ 5％
Bi
3+ 0.4％
Form.
The present invention adopts nontoxic methylsulfonic acid as electroplating solution, and its prescription is
Sn
2+ 8～28g/L Pb
2+ 1～2.5g/L
Bi
3+0.1～0.5g/L methylsulfonic acid 100～150g/L
SPB-I 35～45ml/L SPB-II 10～20ml/L
15～25 ℃ of auxilliary photo etching 10～20ml/L temperature
D
k0.5～7A/dm
2Negative electrode moves 1～3m/min
Process for preparation is that elder generation adds 1/2 pure water in groove, adding calculated amount methylsulfonic acid, tin methane sulfonate, methylsulfonic acid lead, methylsulfonic acid bismuth then successively stirs, add additive SPB-I and additive SPB-II (can obtain argenteous tin-lead-bismuth settled layer) respectively, add auxilliary photo etching C (can obtain bright argenteous tin-lead-bismuth settled layer) again, fully stir, finally add pure water to prescribed volume, being mixed gets final product.Also can adopt the SS-820 series additive.
After electroplating solution prepared, coating of the present invention can be obtained by rack plating or barrel plating.
Copper spare is electroplated rose metal coating adopts following technology:
(5～10%MSA) → pure water is washed → methylsulfonic acid plating tin-lead-bismuth → washing → neutralization (5～10%Na in plating pre-treatment → methylsulfonic acid etch
3Po
4, 60～90 ℃, 5～15S) → washing → pure water is washed → drying → packing warehouse-in
Steel part is electroplated rose metal coating adopts following technology:
(5～10%MSA) → pure water is washed → methylsulfonic acid plating tin-lead-bismuth → washing → neutralization (5～10%Na in plating pre-treatment → copper facing (cyanogen copper+burnt copper or cyanogen copper+sour copper) → methylsulfonic acid etch
3Po
4, 60～90 ℃, 5～15S) → washing → pure water is washed → drying → packing warehouse-in
Aluminum component is electroplated rose metal coating adopts following technology:
Nickel → (5～10%MSA) → methylsulfonic acid is electroplated tin-lead-bismuth → washing → neutralization (5～10%Na to move back nickel → copper facing → washing → methylsulfonic acid etch for aluminum component pre-treatment → soak nickel → move back nickel → soak zinc → move back zinc → soak
3Po
4, 60～90 ℃, 5～15S) → washing → pure water is washed → drying → packing warehouse-in.
Claims (4)
1, a kind of rose metal coating is characterized in that it is by following composition (weight percent):
Sn
2+ 84.5～96.5％ Pb
2+ 3～15％
Bi
3+0.2～0.5% forms.
2, rose metal coating according to claim 1 is characterized in that it is by following composition (weight percent):
Sn
2+ 86.7％ Pb
2+ 13％
Bi
3+0.3% forms.
3, rose metal coating according to claim 1 is characterized in that it is by following composition (weight percent):
Sn
2+ 90.65％ Pb
2+ 9％
Bi
3+0.35% forms.
4, rose metal coating according to claim 1 is characterized in that it is by following composition (weight percent):
Sn
2+ 94.6％ Pb
2+ 5％
Bi
3+0.4% forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021208395A CN1295383C (en) | 2002-06-05 | 2002-06-05 | Rose metal coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021208395A CN1295383C (en) | 2002-06-05 | 2002-06-05 | Rose metal coating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1464076A CN1464076A (en) | 2003-12-31 |
| CN1295383C true CN1295383C (en) | 2007-01-17 |
Family
ID=29742596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021208395A Expired - Fee Related CN1295383C (en) | 2002-06-05 | 2002-06-05 | Rose metal coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1295383C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20180024765A (en) * | 2016-08-31 | 2018-03-08 | 주식회사 호진플라텍 | Tin-bismuth-lead ternary alloy solder composition using electroplating |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS509789A (en) * | 1973-06-02 | 1975-01-31 | ||
| JPH059789A (en) * | 1991-07-02 | 1993-01-19 | Honda Motor Co Ltd | Sliding member |
| JP2818190B2 (en) * | 1988-03-18 | 1998-10-30 | 株式会社東芝 | Nonvolatile semiconductor memory device and method of manufacturing the same |
| JP2000026991A (en) * | 1998-07-10 | 2000-01-25 | Daiwa Kasei Kenkyusho:Kk | Tin and tin alloy plating bath |
-
2002
- 2002-06-05 CN CNB021208395A patent/CN1295383C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS509789A (en) * | 1973-06-02 | 1975-01-31 | ||
| JP2818190B2 (en) * | 1988-03-18 | 1998-10-30 | 株式会社東芝 | Nonvolatile semiconductor memory device and method of manufacturing the same |
| JPH059789A (en) * | 1991-07-02 | 1993-01-19 | Honda Motor Co Ltd | Sliding member |
| JP2000026991A (en) * | 1998-07-10 | 2000-01-25 | Daiwa Kasei Kenkyusho:Kk | Tin and tin alloy plating bath |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1464076A (en) | 2003-12-31 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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Owner name: XIANGTAN JIANGNAN INDUSTRY CO., LTD. Free format text: FORMER OWNER: JIANGNAN MACHINE PLANT Effective date: 20110504 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 411207 NANZHUSHAN TOWN, XIANGTAN CITY, HU'NAN PROVINCE TO: 411207 NANZHUSHAN, YUHU DISTRICT, XIANGTAN CITY, HU'NAN PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20110504 Address after: Nan Zhushan Yuhu District 411207 Hunan city of Xiangtan Province Patentee after: Xiangtan Jiangnan Industry Co., Ltd. Address before: 411207 Hunan city of Xiangtan Province bamboo town Patentee before: Jiangnan Machine Plant |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070117 Termination date: 20170605 |
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| CF01 | Termination of patent right due to non-payment of annual fee |