Cold spray nozzle and cold spray device

A nozzle for cold spray, the nozzle comprising:

• a tubular nozzle main body having heat conductivity, the tubular nozzle main body configured to spray a raw material powder supplied from a cold spray apparatus, the tubular nozzle main body comprising:
• a connecting portion having a first diameter, and
• a rear end portion contiguous with the connecting portion and having a second diameter, the second diameter less than the first diameter;
• and
• a cooling jacket surrounding the tubular nozzle main body and forming a flow path for refrigerant between the tubular nozzle main body and the cooling jacket, the cooling jacket being configured to cool the tubular nozzle main body via the refrigerant flowing through the flow path, the cooling jacket comprising:
• a first seal retaining portion on a tip side of the tubular nozzle main body, and
• a second seal retaining portion on a rear end side of the tubular nozzle main body;
• a first seal member retained by the first seal retaining portion and directly contacting a tip portion of the tubular nozzle main body;
• and
• a second seal member retained by the second seal retaining portion and directly contacting the rear end portion, the second seal member positioned between the connecting portion and the tip portion;
• wherein the first seal retaining portion is joined with the tip portion of the tubular nozzle main body in a socket-and-spigot joint fashion.