TiZr Passivation - Chrome free conversion Coating

TiZr is shorthand for the titanium zirconium passivation process applied to aluminium components. This removes the natural oxide layer and replaces it with a stable, chemically modified ‘shield’ layer. Passivation is also referred to as conversion coating.

TiZr passivation creates a stable surface which will allow bonding and welding processes to deliver repeatable, strong, durable adhesive bonds. This conversion coating process also provides a stable base for powder coating and offers additional protection against corrosion.

As the first metal treatment provider in the UK to install TiZr as a chrome-free passivation process (since 2001), Powdertech Surface Science is the most experienced outsource TiZr pre-treatment provider in the country with an unrivalled body of knowledge. We use the latest Gardobond® systems for TiZr passivation and apply it to aluminium components (cast, extruded or formed) to enhance adhesive durability for metal-to-metal bonding and welding.

Powdertech TiZr matches anodising for enhanced adhesive bonding.
Extensive testing shows that the stable, protective passivation layer achieved through Powdertech TiZr matches the performance of anodising for durability of adhesive joints. TiZr pre-treatment has a faster lead time than anodising, uses less energy and is a more cost-effective and environmentally appropriate process than anodising.