Patent ID: 9481933
Filing Date: 2016-11-01
CPC Classification: B05B,B05C,B05D,B23K,C23C

Claim Text:
1. A cold spray nozzle assembly for applying a coating of particles to a substrate comprising: a nozzle defining an inner passage extending in a flow direction from a convergent section adjacent a nozzle entrance through a throat to a divergent section adjacent a nozzle exit, each of the convergent section, the throat, and the divergent section of the inner passage is substantially rectangular in cross sectional planes that intersect perpendicularly and transversely to a longitudinal axis of the inner passage thereby having opposing minor side faces and major side faces; a gas supply member supplying a gas to the inner passage of the nozzle to flow through the inner passage of the nozzle and accelerate through the inner passage by passage through the convergent section, the throat, and the divergent section; a particle supply member in direct communication with only the minor side face of the divergent section of the inner passage, the particle supply member supplying the particles to flow in the gas supplied by the gas supply member, accelerate within the divergent section, and out of the nozzle via the nozzle exit toward the substrate to coat the substrate; and a laser that emits a laser beam that is transmitted through the inner passage containing the supplied gas, the laser heats the particles below the particles' melting point only in and downstream of the divergent passage and heats the substrate to promote cold spray coating of the substrate with the particles.