Zinc & Zinc Alloy Electroplating Products with Passivations
Acid zinc and cyanide-free alkaline zinc plating systems with trivalent and hexavalent chromate passivations for bright, corrosion-resistant deposits.
Overview
Marshal Laboratories manufactures complete zinc and zinc-alloy electroplating systems of high cathode efficiency, producing uniform, bright metallic deposits compatible with a wide range of passivation systems. Two broad categories of chemistry are offered — a high-temperature-stable acid zinc process and a purely water-based, eco-friendly cyanide-free alkaline zinc process — together with a full range of modern trivalent and traditional hexavalent chromate conversion passivations. The processes suit both rack and barrel operations.
Acid Zinc Plating Process
User-friendly, low-consumption additive system that remains stable at higher electroplating-bath temperatures. Deposits are lustrous bright with a uniform laminar microstructure that enhances corrosion resistance, and are compatible with multiple passivations across rack and barrel operations.
Key Features
- High-temperature stable
- Low-consumption, user-friendly additives
- Suitable for rack & barrel operations
- Lustrous bright deposits with uniform laminar microstructure
- Enhanced corrosion resistance
- Water-based and solvent-based organic additives available
- No sludge build-up — solution stays crystal clear
- Compatible with multiple passivations
Technical Data Sheet
Cyanide-Free Alkaline Zinc Process
Purely water-based, eco-friendly cyanide-free chemistry with very low additive consumption, delivering excellent uniform bright deposits. The additives increase cathode efficiency for faster electrodeposition — especially in barrel plating — with very low hydrogen gas evolution, making the system highly user-friendly. Can also be used for Zinc-Fe deposition.
Key Features
- Purely water-based, eco-friendly cyanide-free system
- Very low additive consumption
- Higher cathode efficiency for faster electrodeposition
- Ideal for barrel plating
- Very low hydrogen gas evolution — user-friendly operation
- High corrosion resistance
- Uniform thickness distribution
- Honeycomb microstructure
- Can also be used for Zinc-Fe deposition
Technical Data Sheet
Passivations
Modern trivalent and traditional hexavalent chromate conversion coatings that enhance the corrosion resistance of zinc deposits, available for both acid and alkaline zinc surfaces in Trivalent Blue, Yellow (iridescent), Black and Olive Green finishes.
Key Features
- Thick chromate layer with uniform brightness
- Concentrate formulations reduce replenishment needs
- Eco-friendly trivalent passivation option
- Traditional hexavalent chromium formulations
- Meets ASTM B117 neutral salt spray test requirements
- Extended corrosion protection with specified salt spray chamber hours
Technical Specifications
| Hexavalent finish | System | Dosage |
|---|---|---|
| Blue | Bluepass 10 | 4–5 g/L |
| Yellow | Unipass SF | 80–100 ml/L |
| Black | Black Finish A | 100 ml/L (Part A) + 100 ml/L (Part B) |
| Olive Green | Olipass 100 | 80–100 ml/L |
Looking for something else?
Browse all our product categories — plating chemistries, top coats and machinery.
Explore More Products