SU139533A1 - The method of electrochemical silvering of products from copper and alloys on its basis - Google Patents
The method of electrochemical silvering of products from copper and alloys on its basisInfo
- Publication number
- SU139533A1 SU139533A1 SU666367A SU666367A SU139533A1 SU 139533 A1 SU139533 A1 SU 139533A1 SU 666367 A SU666367 A SU 666367A SU 666367 A SU666367 A SU 666367A SU 139533 A1 SU139533 A1 SU 139533A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- silvering
- products
- electrochemical
- copper
- alloys
- Prior art date
Links
Landscapes
- Electroplating And Plating Baths Therefor (AREA)
Description
При гальваническом серебрении деталей из меди и ее снлавов сначала ироизводитс амальгамирование деталей или их предварительное серебрение в цианистых растворах. Амальгамирование не всегда обеспечивает получение посеребренных деталей высокого качества , а при предварительном серебрении из цианистых растворов примен ютс реактивы, обладаюндие высокой токсичностью.In the case of galvanic silvering of copper parts and its components, the amalgamation of the parts or their preliminary silvering in cyanide solutions is first produced. Amalgamation does not always provide high quality silver-plated parts, and when silvering from cyanide solutions, reagents are used that are highly toxic.
Отличительна особенность предлагаемого способа электрохимического серебрени изделий из меди и сплавов на ее основе состоит в том, что предварительное серебрение (создание подсло ) производитс за счет контактного осаждени серебра из раствора, содержащего: NagSOs. 7Н20 - не менее 200 г/л; Na3Ag(SO3) г/л; NaNOs -0,5-1,5 .A distinctive feature of the proposed method of electrochemical silvering of copper products and alloys based on it is that preliminary silvering (creating a sublayer) is carried out by contact deposition of silver from a solution containing: NagSOs. 7Н20 - not less than 200 g / l; Na3Ag (SO3) g / l; NaNOs-0.5-1.5.
Создание серебр ного подсло путем контактного осал дени серебра из раствора указанного состава позвол ет повысить качество получае.мого покрыти , а также оздоровл ет услови труда.Creating a silver underlayer by contacting the silver from the solution of this composition improves the quality of the finished coating and also improves the working conditions.
Дл составлени рабочего раствора в отдельных сосудах раствор ют необходимые количества AgNOa и NaoSOs-71-120. Затем при посто нном перемешивании раствора Ма25Оз-7Н2О в него добавл етс раствор AgNOa до растворени образовавшегос осадка. Полученный раствор, кроме комплексной соли МазА§-(5Оз)2, содержит также и небольшое количество соли NaNOa, котора образуетс в результате реакции между Na2SO2 7Н20 и AgNOs.The required amounts of AgNOa and NaoSOs-71-120 are dissolved in separate vessels to form the working solution. Then, with a constant stirring of the solution of Ma25Oz-7H2O, an AgNOa solution is added to it to dissolve the formed precipitate. The resulting solution, in addition to the complex salt MazAg- (5Oz) 2, also contains a small amount of the salt NaNOa, which is formed as a result of the reaction between Na2SO2 7H20 and AgNOs.
Контактное осаждение серебра на обрабатываемых издели х производитс путем погружени их в раствор на 3-7 мин. Температура раствора комнатна . Толщина получаемого серебр ного покрыти от 0,1 до 0,3 мк. Покрытие обладает хороши.м сцеплением с основой и может служить как в качестве подсло дл последую№ 139533- 2 щего наращивани сло серебра электрохимическим способом, так и в качестве самосто тельного покрыти при эксплуатации изделий в легких услови х.Contact deposition of silver on processed products is carried out by immersing them in the solution for 3-7 minutes. The temperature of the solution is room temperature. The thickness of the resulting silver coating is from 0.1 to 0.3 microns. The coating has good adhesion to the base and can serve both as a sublayer for the subsequent No. 139533-2 build-up of a silver layer by an electrochemical method, and as a stand-alone coating when operating products in light conditions.
Предмет изобретени Subject invention
Способ электрохимического серебрени изделий из медн- и сплавов на ее основе по подслою, осажденному контактно из сульфитных растворов, отличающийс тем, что, с целью повышени качества покрыти , KOHTai THoe осаждение подсло производ т из раствора , содержап1его: Ма25Оз-7Н2О - не менее 200 г/л; МазАд(5Оз)2 - 2-6 NaNOs -0,5-1,5 г/л.The method of electrochemical silvering of products from copper and alloys on its basis over a sublayer deposited from sulphite solutions, characterized in that, in order to improve the quality of the coating, KOHTai THoe deposition of the sublayer is made from a solution containing: Ma25Oz-7H2O - not less than 200 g / l; MazAD (5Oz) 2 - 2-6 NaNOs -0.5-1.5 g / l.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU666367A SU139533A1 (en) | 1960-05-11 | 1960-05-11 | The method of electrochemical silvering of products from copper and alloys on its basis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU666367A SU139533A1 (en) | 1960-05-11 | 1960-05-11 | The method of electrochemical silvering of products from copper and alloys on its basis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU139533A1 true SU139533A1 (en) | 1960-11-30 |
Family
ID=48295614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU666367A SU139533A1 (en) | 1960-05-11 | 1960-05-11 | The method of electrochemical silvering of products from copper and alloys on its basis |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU139533A1 (en) |
-
1960
- 1960-05-11 SU SU666367A patent/SU139533A1/en active
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