Cirrus Guardian™ PEO is an enhanced plasma electrolytic oxidation technology that offers a non-toxic, scalable, cost-effective process to coat light metals such as magnesium, aluminium and titanium using a single bath formulation.

The Guardian™ PEO process consumes less than 12 W·h/micron/dm2 to produce durable, corrosion-resistant coatings on Mg, Al, and Ti alloys. The electrolyte is composed of eco-safe benign chemicals with low waste management costs and minimal environmental impact.