Henkel Adhesive Technologies

Henkel Adhesive Technologies

Chrome-free conversion coatings

Corrosion protection with eco-friendly conversion coatings.



2 min.
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Corrosion protection with eco-friendly conversion coatings

BONDERITE®, provides an extensive range of chrome-free conversion coatings based on zirconium or titanium for treating non-ferrous alloys. The process provides excellent corrosion resistance and paint adhesion with increased process stability.

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An extensive range of chrome-free conversion coatings

Henkel offers a wide range of BONDERITE® chrome-free conversion coatings for the pre-treatment of aluminum and aluminum alloys. The non chromate conversion coatings for aluminum form an integral step in the overall manufacturing process, especially prior to painting. The BONDERITE® range includes chrome-free conversion coatings based on zirconium or titanium for treating non-ferrous alloys with excellent corrosion resistance and paint adhesion and providing increased process stability.

Coating can be performed using spray or immersion techniques. The process provides an excellent base for the bonding of adhesives and organic finishes helping to ensure an excellent result and a hard-wearing, corrosion-free surface. Henkel also supplies a wide range of coating products that offer a variety of finishes and meet the needs of different markets and environmental requirements.

The large range includes products that ensure high-quality, robust finishes on all types of aluminum alloys. BONDERITE®’s liquid products are supplied with automatic dosing equipment for easy application, avoiding wastage, ensuring operator safety and helping to maintain a healthy working environment.

The image showing the chromating and chrome-free process sequences.

The benefits of chrome-free conversion coatings

BONDERITE® chrome-free conversion coatings can be performed using spray or immersion techniques and a variety of finishes can be obtained to meet the needs of any market worldwide.

The key features include:

  • Liquid product
  • Eco-friendly process with low power consumption
  • High AL level in solution
  • Optional low-temperature operation of the pre-treatment line
  • Low aluminum dissolution
  • Easy rinsing with no requirement for a final rinse
  • No foaming or and fuming during application
  • Automatic feeding
  • Low raw material consumption
  • Analytical control

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