CN109112588A - Using silver-colored graphite composite material as the non-cyanide silver coating method of matrix - Google Patents
Using silver-colored graphite composite material as the non-cyanide silver coating method of matrix Download PDFInfo
- Publication number
- CN109112588A CN109112588A CN201811060709.5A CN201811060709A CN109112588A CN 109112588 A CN109112588 A CN 109112588A CN 201811060709 A CN201811060709 A CN 201811060709A CN 109112588 A CN109112588 A CN 109112588A
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- China
- Prior art keywords
- silver
- beaker
- colored graphite
- water
- sample block
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- 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.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/46—Electroplating: Baths therefor from solutions of silver
-
- 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
- C25D5/54—Electroplating of non-metallic surfaces
Abstract
The present invention provide it is a kind of using silver-colored graphite composite material as the non-cyanide silver coating method of matrix, to solve the problems, such as be: how to reduce the silver-plated cost of silver-colored graphite composite material.The method is characterized in that preparing electroplate liquid, three kinds of raw materials, i.e. silver nitrate 40-45g, sodium thiosulfate 200-250 g and potassium metabisulfite 40-45 g are launched simultaneously in the following proportions in every liter of distilled water, is poured into beaker, while magnetic stirring apparatus is also put into beaker；Beaker is put into water-bath, by the tap water heating in water-bath to 25-35 DEG C；By after cleaning silver-colored graphite sample block and silver plate be put into beaker and be electroplated, start magnetic stirring apparatus simultaneously to be stirred filtered solution, mixing speed is 300-500 rpm, and the area ratio of silver plate and silver-colored graphite sample block is 1:1-1.5, and cathode-current density is 0.8-1.0 A/dm2, until electroplated layer reaches required thickness.
Description
Technical field
The present invention relates to a kind of techniques of silver-colored graphite composite material non-cyanide silver electroplating, are specifically with silver-colored graphite composite material
The electrosilvering method of matrix.
Background technique
This field follows the record of textbook at present, and the method for the electrosilvering used always includes preparing electroplate liquid, specifically
It is to launch five kinds of raw materials (solute), i.e. silver nitrate 40-45 g, sodium thiosulfate in the following proportions every liter of distilled water (solvent) is inner
200-250 g, potassium metabisulfite 40-45 g, ammonium acetate 20-30 g and thiosemicarbazide 0.6-0.8 g, are filtered again after mixing evenly
Decontamination is at electroplate liquid；This method further includes being electroplated at normal temperature in the silver-colored graphite sample block investment electroplate liquid after cleaning,
Cathode-current density is 0.1-0.3 A/dm when plating2, cathode and annode area ratio 1:2.This method has a defect that, is electroplated
Liquid is prepared using five kinds of raw materials, and higher cost, mainly ammonium acetate and thiosemicarbazide price are slightly higher.
Summary of the invention
The object of the present invention is to provide a kind of using silver-colored graphite composite material as the non-cyanide silver coating method of matrix.
The object of the present invention is achieved like this: it includes
Electroplate liquid is prepared, specifically launches three kinds of raw materials, i.e. silver nitrate 40-45g, sulphur simultaneously in the following proportions in every liter of distilled water
Sodium thiosulfate 200-250 g and potassium metabisulfite 40-45 g filters off impurity into electroplate liquid again after mixing evenly, pours into beaker,
Magnetic stirring apparatus is also put into beaker simultaneously；Beaker is put into water-bath, by the tap water heating in water-bath to 25-35
DEG C, the electroplate liquid height in water-bath in tap water height and beaker maintains an equal level；
Ultrasonic cleaning is carried out to silver-colored graphite sample block with acetone or alcohol, by after cleaning silver-colored graphite sample block and silver plate be put into beaker
In be electroplated, while starting magnetic stirring apparatus and filtered solution be stirred, mixing speed is 300-500 rpm, silver
The area ratio of plate and silver-colored graphite sample block is 1:1-1.5, and silver plate connects positive pole, and silver-colored graphite sample block connects power cathode, cathode current
Density is 0.8-1.0 A/dm2, until electroplated layer reaches required thickness.
Compared with prior art, the beneficial effects of the present invention are:
(1) electroplating cost is reduced.Raw material used in the relatively traditional electrosilvering of raw material used in the present invention is less, so plating
Cost about reduces by 20%.
(2) product quality is improved.The silver-colored graphite composite material being electroplated using the present invention, plating thickness is controllable, is electroplated
Layer with basal body binding force securely, be electroplated layer tissue it is fine and closely woven.
(3) overcome technology prejudice.
Specific embodiment
It includes preparing electroplate liquid, specifically launches three kinds of raw materials, i.e. nitric acid simultaneously in the following proportions in 1 liter of distilled water
Silver-colored 42g, 220 g of sodium thiosulfate and pyrosulfurous acid K42 g filter off impurity into electroplate liquid again after mixing evenly, pour into beaker
In, while magnetic stirring apparatus is also put into beaker；Beaker is put into water-bath, by the tap water heating in water-bath to 33
DEG C, the electroplate liquid height in water-bath in tap water height and beaker maintains an equal level；
Ultrasonic cleaning is carried out to silver-colored graphite sample block with acetone or alcohol, by after cleaning silver-colored graphite sample block and silver plate be put into beaker
In be electroplated, while starting magnetic stirring apparatus and filtered solution be stirred, mixing speed is 400 rpm, silver plate with
The area ratio of silver-colored graphite sample block is 1:1.2, and silver plate connects positive pole, and silver-colored graphite sample block connects power cathode, and cathode-current density is
0.9 A/dm2, until electroplated layer reaches required thickness.
Claims (1)
1. a kind of using silver-colored graphite composite material as the non-cyanide silver coating method of matrix, it includes
Electroplate liquid is prepared, specifically launches three kinds of raw materials, i.e. silver nitrate 40-45g, sulphur simultaneously in the following proportions in every liter of distilled water
Sodium thiosulfate 200-250 g and potassium metabisulfite 40-45 g filters off impurity into electroplate liquid again after mixing evenly, pours into beaker,
Magnetic stirring apparatus is also put into beaker simultaneously；Beaker is put into water-bath, by the tap water heating in water-bath to 25-35
DEG C, the electroplate liquid height in water-bath in tap water height and beaker maintains an equal level；
Ultrasonic cleaning is carried out to silver-colored graphite sample block with acetone or alcohol, by after cleaning silver-colored graphite sample block and silver plate be put into beaker
In be electroplated, while starting magnetic stirring apparatus and filtered solution be stirred, mixing speed is 300-500 rpm, silver
The area ratio of plate and silver-colored graphite sample block is 1:1-1.5, and silver plate connects positive pole, and silver-colored graphite sample block connects power cathode, cathode current
Density is 0.8-1.0 A/dm2, until electroplated layer reaches required thickness.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811060709.5A CN109112588A (en) | 2018-09-12 | 2018-09-12 | Using silver-colored graphite composite material as the non-cyanide silver coating method of matrix |
| PCT/CN2019/104467 WO2020052487A1 (en) | 2018-09-12 | 2019-09-05 | Cyanide-free silver plating method having silver graphite composite material serving as matrix, silver graphite electrical contact, and relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811060709.5A CN109112588A (en) | 2018-09-12 | 2018-09-12 | Using silver-colored graphite composite material as the non-cyanide silver coating method of matrix |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109112588A true CN109112588A (en) | 2019-01-01 |
Family
ID=64859250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811060709.5A Pending CN109112588A (en) | 2018-09-12 | 2018-09-12 | Using silver-colored graphite composite material as the non-cyanide silver coating method of matrix |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109112588A (en) |
| WO (1) | WO2020052487A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020052487A1 (en) * | 2018-09-12 | 2020-03-19 | 沈阳铁路信号有限责任公司 | Cyanide-free silver plating method having silver graphite composite material serving as matrix, silver graphite electrical contact, and relay |
| CN111235608A (en) * | 2020-03-10 | 2020-06-05 | 国网浙江省电力有限公司电力科学研究院 | Cyanide-free silver-based composite plating solution, silver-based composite plating layer and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1680630A (en) * | 2005-01-26 | 2005-10-12 | 上海大学 | Technology of non-cyanide silver coating |
| CN101760768A (en) * | 2010-01-20 | 2010-06-30 | 河南科技大学 | Electroplating solution for cyanide-free silver plating and cyanide-free silver plating method |
| CN105821465A (en) * | 2016-05-09 | 2016-08-03 | 南昌航空大学 | Preparation method for silver and graphene composite coating of cyanide-free system |
| CN108221011A (en) * | 2018-01-05 | 2018-06-29 | 广西师范大学 | One kind prepares silver/redox graphene composite material and preparation method thereof based on graphene oxide |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2622844Y (en) * | 2003-06-19 | 2004-06-30 | 中国铁路通信信号集团公司西安铁路信号研究所 | Railway signal relay |
| CN1944698A (en) * | 2006-10-24 | 2007-04-11 | 北京科技大学 | Super high heat conduction, low heat expansion coefficient composite material and its preparing method |
| CN103173815A (en) * | 2011-12-23 | 2013-06-26 | 李振萍 | Non-cyanide electrosilvering process |
| CN102978560A (en) * | 2012-11-30 | 2013-03-20 | 浙江帕特尼触头有限公司 | Preparation process of silver/copper base composite contact material |
| CN105215331A (en) * | 2014-10-22 | 2016-01-06 | 侯玉杰 | High-strength high-density isotropism soaks the preparation method of silver-colored carbon/graphite composite material |
| CN109112588A (en) * | 2018-09-12 | 2019-01-01 | 沈阳铁路信号有限责任公司 | Using silver-colored graphite composite material as the non-cyanide silver coating method of matrix |
-
2018
- 2018-09-12 CN CN201811060709.5A patent/CN109112588A/en active Pending
-
2019
- 2019-09-05 WO PCT/CN2019/104467 patent/WO2020052487A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1680630A (en) * | 2005-01-26 | 2005-10-12 | 上海大学 | Technology of non-cyanide silver coating |
| CN101760768A (en) * | 2010-01-20 | 2010-06-30 | 河南科技大学 | Electroplating solution for cyanide-free silver plating and cyanide-free silver plating method |
| CN105821465A (en) * | 2016-05-09 | 2016-08-03 | 南昌航空大学 | Preparation method for silver and graphene composite coating of cyanide-free system |
| CN108221011A (en) * | 2018-01-05 | 2018-06-29 | 广西师范大学 | One kind prepares silver/redox graphene composite material and preparation method thereof based on graphene oxide |
Non-Patent Citations (1)
| Title |
|---|
| 上海市劳动仪表厂: "硫代硫酸盐无氰镀银", 《仪器制造》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020052487A1 (en) * | 2018-09-12 | 2020-03-19 | 沈阳铁路信号有限责任公司 | Cyanide-free silver plating method having silver graphite composite material serving as matrix, silver graphite electrical contact, and relay |
| CN111235608A (en) * | 2020-03-10 | 2020-06-05 | 国网浙江省电力有限公司电力科学研究院 | Cyanide-free silver-based composite plating solution, silver-based composite plating layer and preparation method thereof |
| CN111235608B (en) * | 2020-03-10 | 2021-02-12 | 国网浙江省电力有限公司电力科学研究院 | Cyanide-free silver-based composite plating solution, silver-based composite plating layer and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| WO2020052487A1 (en) | 2020-03-19 |
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