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Alloy Plating Additives

With the continuous development of the plating process, plating with alloys has become very popular. This is mainly due to the additional advantages that alloys offer over single metals. For example, both zinc and nickel are widely used in a variety of finishing applications on their own, but a combination of the two metals provides a far greater resistance to corrosion than the individual metals can offer. In the alloy plating process, we offer several common alloy plating additives. For example, alkaline black Sn-Ni alloy plating additive, bright Cu-Sn alloy plating additive, Zn-Ni alloy plating additive, etc. These additives play an important role in the alloy plating process, which mainly stems from the fact that they help to improve the properties of the plating.

Alloy Plating Additives

Advantages of alloy plating

With the rapid development of industry, people have higher demands on the surface performance and appearance of metals. As a result, alloy plating has emerged. Plating surfaces with alloy coatings offer many advantages. The main advantages are as follows.

  • Improved plating performance: Alloy plating may have properties and combinations of properties that cannot be achieved with pure metal plating. For example, some alloy plating have high hardness and good appearance at the same time.
  • Low cost: Alloys are inexpensive and readily available, and alloy plating can be used as a substitute for precious metal plating.
  • High ductility: Alloy plating can improve the conductivity in electronic devices, including anything from power generators to computers.
  • Corrosion resistance: Certain alloys when applied onto surfaces prevent the substrate from corroding.

Applications of alloy plating

With the aid of additives, alloy plating has been useful in many fields. The main applications are as follows.

  • Automotive: Corrosion in automobiles is one of the headaches for all automakers. Alloy plating is one of the solutions proposed by the manufacturers. Alloy plating protects vehicles and their crucial parts from sustaining rust damage. Applying a thin layer of zinc-nickel to metal elements keeps corrosion from reaching the surface, preventing the formation of rust and further consequences.
  • Electronics: To improve the performance of products, manufacturers plate many of the metal components with alloys. It helps create electronics with longer lifespans, and it also makes the devices more resistant to potential corrosion and increases internal conductivity. For parts that need it, the alloy also increases the substrate's solderability, making it easier to configure with other components and elements. Alloys also protect delicate electronics from premature wear.
  • Medical: Medical devices require plating of specific parts of metal components in many scenarios. For example, the surface of surgical instruments needs to be plated with alloy to avoid contamination.

Our products

Alfa Chemistry supplies alloy plating additives to companies producing electroplating solutions. Depending on your different needs, you can choose from the following alloy plating additives.



Alkaline Black Sn-Ni
Alloy Plating Additive

1. Suitable for barrel/rack plating of Sn-Ni alloys.
2. Uniform black surface with high tarnish & corrosion tolerance.
3. Perfect binding force with copper, brass & nickel substrate.
4. Good covering & leveling power without auxiliary anode.

Black Nickel Free
Sn-Co Alloy Plating

1. Produces jet-black good-looking deposits similar to decorative black pearls.
2. Suitable for barrel/rack plating of small parts.
3. High wear resistance & color resistance.
4. Perfect dispersing power.

Bright Cu-Sn Alloy
Plating Additive

1. Silver bright deposit with good varnish.
2. High hardness & ductility to safe multilayer plating of 5μm deposit against mist.
3. High stability & good color resistance.
4. Applicable to both rack and barrel plating.

Cu-Sn Alloy Multilayer
Plating Additive

1. Suitable for multilayer electroplating of Cu-Sn alloys.
2. High luster & leveled.
3. Perfect solderability & ductility skill.
4. Good corrosion & color resistance.

Co-Zn-Sn Alloy Plating

1. Both rack and barrel plating are possible, and it can be used for pre-plating, thickened plating and decorative plating.
2. The plating coating is uniform.
3. High wear & color resistance.
4. Perfect dispersing power.

Acid Cyanide Free
Zn-Ni Alloy Plating

1. Eco-agent, suitable for barrel/rack plating on high carbon steel & iron castings.
2. Bright, robust, leveled deposit to corrosion resistance.
3. Deposit density with 8-12% nickel against heat attack.
4. Stable for easy maintenance.

Alkaline Cyanide-
free Zn-Ni Alloy
Plating Additive

1. Low internal stress, great ductility, excellent gloss.
2. The nickel content is even, with little deviation.
3. Uniform coating, low hydrogen embrittlement.
4. Applicable to barrel and rack plating, easy passivating, higher corrosion resistant.

Acid Zn-Ni Alloy
(Potassium Chloride
-based) Plating

1. Obtain fine and bright coating.
2. High current efficiency, fast coating rate.
3. Low internal stress and great adhesion of the coating.
4. Heat- and corrosive-resistances.
5. Applicable to both rack and barrel plating.

Black Alloy Plating

1. Stable solution, easy operation, simple maintenance.
2. Wide temperature and current range, excellent covering and throwing power, adapted for rack and barrel plating.
3. The electrolyte can be used as long as possible, only need for replenishment, no need to exchange.
4. Exhibits excellent wear resistance, anti-oxidizing, uniform color, glaring black, charming and stable color.

As a supplier of electroplating chemicals, Alfa Chemistry has always shown great interest in alloy plating. Alfa Chemistry is committed to providing a wide range of alloy plating additives. If you do not find what you need, please contact us. We also offer product customization according to customer's detailed requirements.

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