Patent ID: 8241710

Claim:
A method for spraying a track onto a substrate, the method comprising the following steps: providing a spray lance extending in a longitudinal direction and having devices including a cathode, walls, a frontal exit opening and a feed connector for powder oriented at an angle obliquely relative to the longitudinal direction; moving the spray lance at a relative speed relative to the substrate; feeding an ionizable gas to the spray lance; ionizing the gas by an arc generated in the spray lance to generate a cold plasma having a plasma temperature of less than 3000 K; introducing a powder into the spray lance with the aid of a carrier gas; carrying the powder along by the plasma in direction of the frontal exit opening of the spray lance to exit through the frontal exit opening and impinge on the substrate; feeding a flow of the ionizable gas and the carrier gas into the spray lance approximately under the same pressure, in a range of approximately 1*10 5 -10*10 5 Pa; coordinating the angle of orientation of the feed connector, the flow of the ionizable gas and the flow of the carrier gas with one another to cause the powder to pass from the feed connector along an arcuate path to the exit opening without coming into contact with the devices or walls of the spray lance; and spacing the feed connector at a distance of approximately 1 cm from the exit opening in the longitudinal direction and at a distance in a range of 5 to 7 cm from the cathode of the spray lance in the longitudinal direction.