Patent ID: 11857990
Assignee: THE BOEING COMPANY
Field: Materials, metallurgy (Chemistry)
Classification: CPC B  C  Y | IPC B  C

Claim 13:
14. The system of claim 12, wherein the cold spray apparatus is further configured to cold spray a powder onto a substrate of a part, the cold spray apparatus further comprising:
a source of gas connected to a gas control module, the gas control module controlling the flow of the gas through a first line connected to the supersonic nozzle and through a second line connected to a powder chamber and then to the supersonic nozzle;
a heater that heats the gas to a requisite temperature prior to entrance of the gas into the supersonic nozzle;
the gas flowing through the first line and the second line causing the powder located within the powder chamber to be sprayed in a supersonic gas jet from the supersonic nozzle as a particle stream, the particle stream being sprayed at a temperature below the melting point of the powder;
the particle stream travelling at a supersonic velocity from the supersonic nozzle and being deposited on the substrate of the part;
whereby on impact on the substrate, particles of the particle stream undergo plastic deformation due to the supersonic velocity of the particle stream and bond to each other; and
whereby the heater accelerates the speed of the particle stream, but the heat from the heated gas is not transferred to the bonding of the particles of the particle stream.