Eco Silver
Eco-Silver
Eco-Silver Series
(A Series of Cyanide-Free Silver-Plating Solutions)
1. Introduction
(1) Eco-Silver series lineup
Product name | Purity | Ag concentration (g/L) | Current density range (A/d㎡) | Bath temperature (˚C) | pH | Coating appearance | Hardness (HV) | Features | Plating method | Applications |
---|---|---|---|---|---|---|---|---|---|---|
Eco-Silver SB106T | AG: 99 Sb and Se free | 10 | 0.2 to 0.8 | 30 | 5.7 | Matte | 100 | Resistance to discoloration Thick plating suitability | Rack | Decorations Electronic parts |
Eco-Silver SBRCT | AG: 99 Se free | 10 | 0.2 to 1.5 | 30 | 5.7 | Semi-glossy | 120 to 150 | Heat resistance | Rack Barrel | Electronic parts |
Eco-Silver B36T | AG: 99 Sb and Se free | 25 | 0.5 to 2.0 | 30 | 6.0 | Glossy | 150 | Glossiness | Rack Barrel | Decorations |
Eco-Silver SB56T | AG: 99 Sb and Se free | 40 | 0.5 to 4.0 | 40 | 6.0 | Semi-glossy | 100 to 150 | Workability (Current density range) | Rack Barrel Hoop | Electronic parts |
*”Silver plates” are used as anodes, and “Cu” is used as the material for all appropriate cases
Several types of plating solutions are available to suit your application Anti-replacement and anti-discoloration agents are also available. Please contact us for details
1. Introduction
(2) Additives in the Eco-Silver series
Silver supplementation solution | Conductive solution | Brightener | Hardener | pH increaser | |
---|---|---|---|---|---|
Eco-Silver SB106T | ○ | ○ | – | – | – |
Eco-Silver SBRCT | ○ | ○ | – | ○ | – |
Eco-Silver B36T | ○ | ○ | ○ | – | – |
Eco-Silver SB56T | ○ | ○ | ○ | – | ○ |
Remarks | Used when the silver concentration decreases | Used at all times | Used at all times | Used at all times | Used when the pH decreases |
2. Features of the Eco-Silver Series
(1) Benefits of not using cyanide
Item | Content | ||||
---|---|---|---|---|---|
Exhaust gas | No need of cyanide gas washing towers (No cyanide gas is generated) |
||||
Wastewater treatment | No need for wastewater treatment facilities for cyanide decomposition | ||||
Safety | Contains no toxins such as cyan compounds, etc. No physical effects, such as cyanide toxicity, etc. |
||||
Liquid manageability | Complex management is unnecessary because there are no volatile substances such as free cyanide, etc. The Eco-Silver series has very high liquid stability |
2. Features of the Eco-Silver Series
(2) Hardness and glossiness
![eco silver1](https://frpservices.com/wp-content/uploads/2021/01/eco-silver1.png)
2. Features of the Eco-Silver Series
(3) Heat resistance
Plating conditions: Ag10 μm/Ni/Cu
Hardness and appearance after heat treatment at 150°C x 500 Hr
>
Plating solution | Hardness reduction | Discoloration | ||
---|---|---|---|---|
Eco-Silver SBRC | No | No | ||
Hard cyan Ag coating (typical) | Yes | Yes | ||
Hard cyan Ag coating (low Sb) | No | Yes |
With the Eco-Silver SBRC, there was no discoloration nor a reduction in hardness even in an environment where it was exposed to high temperatures for a long time
3. Example of Plating Process
Plating process (for Cu-based materials)
![eco silver2](https://frpservices.com/wp-content/uploads/2021/01/eco-silver2.png)
4. Summary
Benefits to users
· Reduced stress on the environment
=> The safety of workers is ensured
=> Environmental pollution risks due to leakage of plating solutions areeliminated
· Coating hardness and heat resistance with the same or higher level than thatof cyanide
=> In particular, the heat resistance that the Eco-Silver series boasts duringextended hours of processing is a property not found in cyanide baths
· The required hardness and appearance can be selected from the lineup
=> A choice appearances which include “matte,” “semi-glossy,” and “glossy” are available
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