Copper Chromium-Free Passivation Agent

As a professional supplier of electroplating-related products, our company offers a wide range of surface treatment solutions for various substrates. We are dedicated to providing innovative, high-performance products that enhance the durability, corrosion resistance, and overall quality of metal surfaces. Our copper chromium-free passivation agent (product code: ACEP-PRE-022) is a cutting-edge solution designed to improve the corrosion resistance of copper components. Developed with advanced technology, this product is characterized by its strong passivating capability and environmentally friendly properties. It offers an ideal alternative to traditional chromic acid-based passivation processes, providing superior performance while being free from harmful substances like chromic acid and nitrous acid.

Technical Specifications

Key Advantages

• Superior Corrosion Protection: It forms a dense, stable passivation film, enabling copper to withstand >48 hours of neutral salt spray (NSS) testing and >2 years of indoor storage without tarnishing.
• Eco-Friendly & Safe: Compliant with RoHS regulations; contains no chromic acid, nitrites, or heavy metals; biodegradable for reduced environmental impact.
• Cost-Efficient: Reusable chemistry reduces operational costs to just 1/3 of traditional rust-proof oils.
• High-Temperature Stability: It maintains performance even at 180°C for 30 minutes, far outperforming chromic acid methods (which degrade in 5 minutes).
• Simple Operation: It works at room temperature with a short 15-minute immersion time, streamlining production workflows.

Recommended Usage

• Pre-Treatment: Ensure the copper workpiece is thoroughly cleaned or polished.
• Passivation: Immerse in ACEP-PRE-022 for ≥15 minutes (room temperature).
• Rinsing: Rinse with flowing water, followed by a pure water soak.
• Drying: Air-dry or bake.

Use Effect Chart

*Example: Purple Copper

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