Tuesday, December 20, 2011

US Patent 8080278 - Cold gas spraying of nanoparticles


Thermal spraying is used to deposit and adhere nanoparticle films on substrates but is only practical for types of nanoparticles having a high temperature stability. This patent from Siemens teaches a cold gas spraying method enabling the deposition of nanoparticles having low temperature stability. Claim 1 reads:

1. A cold gas spraying method, comprising:

providing a substrate to be coated;

directing a cold gas jet at the substrate to be coated; and

forming the coating upon the substrate by the addition of microencapsulated agglomerates of nanoparticles via the cold gas jet.