COLD-SPRAY NOZZLE AND COLD-SPRAY DEVICE USING COLD-SPRAY NOZZLE

摘要

In order to efficiently obtain a high-quality film by cold spraying, the objective of the present invention is to provide a nozzle for cold spray allowing for greatly improved long-term sustained usage over the prior art, without the occurrence of nozzle clogging. To achieve the objective, there is used a convergent-divergent nozzle for cold spray having a working gas flow channel configured by communicatingly disposing a convergent part, a throat part, and a divergent part, in this order, along the direction in which a working gas flows from an inflow side to an outflow side, the nozzle for cold spray being characterized in that the divergent part has an inner-wall surface having a conic shape, at least a part of the inner-wall surface being constituted of a glass material.