Cold spray nozzle built with polybenzimidazole

摘要

A nozzle (4) for use in a cold spray technique has a passageway (18) for spraying a powder material, the passageway (18) having a converging section (100) and a diverging section (102), and at least the diverging section (102) being formed from polybenzimidazole. In one embodiment of the nozzle, the converging section (100) is also formed from polybenzimidazole.