Coaxial laser assisted cold spray nozzle
AssigneeThe Regents of the University of Michigan
InventorPravansu S. Mohanty
Life of this patent
Estimating the term…
Abstract
A cold spray nozzle assembly for applying a coating of particles to a substrate includes a nozzle defining an inner passage with a nozzle exit. The nozzle assembly also includes a particle supply member in communication with the inner passage. The particle supply member supplies the particles to flow and accelerate through the inner passage and out of the nozzle via the nozzle exit toward the substrate to be coated thereon. Furthermore, the nozzle assembly includes a laser that emits a laser beam that is transmitted through the inner passage. The laser heats at least one of the particles and the substrate to promote coating of the substrate with the particles.
Claims20
A cold spray nozzle assembly for applying a coating of particles to a substrate comprising:
- a nozzle defining an inner passage with a nozzle exit;
- a particle supply member in communication with the inner passage, the particle supply member supplying the particles to flow and accelerate through the inner passage and out of the nozzle via the nozzle exit toward the substrate to be coated thereon;
- and
- a laser that emits a laser beam that is transmitted through the inner passage, the laser heating at least one of the particles and the substrate to promote coating of the substrate with the particles.
A method of applying a coating of particles to a substrate comprising:
- supplying the particles to flow and accelerate through an inner passage of a nozzle and out of the nozzle via a nozzle exit toward the substrate;
- and
- transmitting a laser beam through the inner passage to heat at least one of the particles and the substrate to promote coating of the substrate with the particles.
A cold spray nozzle assembly for applying a coating of particles to a substrate comprising:
- a nozzle defining an inner passage with a nozzle entrance, a nozzle exit, and a substantially straight longitudinal axis that extends through both the nozzle entrance and the nozzle exit, the inner passage being rectangular in a cross section taken perpendicular to the longitudinal axis, the cross section remaining rectangular along the entire nozzle from the nozzle entrance to the nozzle exit, the inner passage also including a convergent section adjacent the nozzle entrance and a divergent section adjacent the nozzle exit, the nozzle also including a particle supply inlet that is in communication with the divergent section and that extends transverse to the longitudinal axis of the inner passage;
- a particle supply member in communication with the particle supply inlet, the particle supply member supplying the particles to flow and accelerate through the inner passage and out of the nozzle via the nozzle exit toward the substrate to be coated thereon;
- a gas supply member that supplies a gas to the inner passage to flow through the inner passage of the nozzle to accelerate the particles;
- a laser that emits a laser beam that is transmitted into the nozzle via the nozzle entrance, through the inner passage, and out of the nozzle via the nozzle exit, the laser heating both the particles and the substrate to promote coating of the substrate with the particles;
- and
- a handling device that moves at least one of the nozzle and the substrate relative to the other.
Dependencies are inferred from the claim text.