Surface strength

A spin out from the UK Atomic Energy Authority, Abingdon-based Zircotec has developed a process that allows a range of ceramic thermal barrier coatings to be plasma sprayed onto the surface of carbon composite, glass-fibre composite and other plastic materials.

While some of the coatings provide protection against high temperatures, others protect against corrosion, erosion and wear, which then allows the coated composites to operate in environments where they might not otherwise be suitable.

According to the firm, the process enables engineers to replace metallic components with composites; moreover, in applications where composites are already used, it can eliminate bulky heat shields that are currently made from materials such as asbestos. It can also deposit metal coatings onto the surface of the materials to enhance aesthetic appeal by providing either a complete metal finish or, more practically, it can produce a reflective coating to help protect the component from radiant heat.