The MECADEF research project aims to develop innovative industrial techniques with low environmental impact, enabling the development of functional, lighter, high added value materials. For example, these materials are used for textured smartphone shells, new aircraft reactor engines, cooking stoves, parts obtained by additive manufacturing, etc. The CRITT TJFU must study and develop these materials using dry projection of a nitrogen gas incorporating powders (metallics, alloys, composites) on raw materials (steel, fonts, alloys, ceramics, composites, etc.) of the parts to be functionalised. The originality of the MECADEF programme lies in the development of textured surfaces capable of receiving more efficient technical deposits, beyond what is now being done, such as making a very thin aluminium foil rigid for the protection of mobile phones and lightening the mass, protecting the blades of an aircraft reactor by a highly temperature-resistant layer.