Powder coating can mask minor surface finish irregularities to some extent. However, more severe defects, like oil contaminations, cutting fluids, scratches, pinholes, flaking/chipping, and uneven corners, can not be eliminated completely, impacting coating performance. This is tested via ‘Aluminium test coupons’.

TiZr passivation is applied to aluminium components. This pre-treatment process removes surface dirt, oils, and other surface contamination, a significant factor for strong and durable dielectric coating strength, where the aluminium component may be exposed to moisture, chemicals, or high temperatures. 

Porosity in dielectric coating refers to microscopic air pockets, bubbles, or voids that can form within the coating layer, affecting the insulation in EV battery assemblies.

A minor reduction in coating thickness at an edge can lower insulation resistance below acceptable thresholds, leading to electrical arcing,or outright machine failure.

Dielectric coupon testing is a low-risk testing process for validating dielectric coating on aluminium components. These aluminium test coupons would let us simulate how your dielectric coating will perform under real-world conditions, before coating at scale.

Our video demonstrates how we ensure that we have cleaned your aluminium to enable the best possible coating and bonding results.

The benefits of solving powder coating issues in collaboration.

Tests have conclusively demonstrated that the bonds formed after optimised carefully controlled TiZr pre-treatment give equivalent  bond durability to those formed after anodising

Why is it so important to passivate aluminium and what is the best method for doing this?

How a new bonding solution could be a game-changer for vehicle light weighting and the reduction of carbon emissions.

Why we take so much care to clean your metal surfaces thoroughly prior to powder coating and adhesive bonding.