Ricerc@Sapienza

Process optimization and quality control are important issues in cold spraying and coating development. Because the cold spray processing is based on high kinetic energy by high particle velocities, online spray monitoring of particle inflight properties can be used as an assisting process tool. Particle velocities, their positions in the spray jet, and particle size measurements give valuable information about spraying conditions. This, in turn, improves reproducibility and reliability of coating production.

In restoration of cultural heritage field, it has been developed nanoparticles coatings having multifunctional features to protect stone artifacts against environmental degrading agents. The nanoparticles concentration
detection within the coating can represent a challenging issue because its monitoring over time can provide insights about the treatment durability. The “sample” under consideration consists in marble coated by