Since the beginning of the 90s, the automotive industry has been constantly asking for coating devices to improve the wear resistance at the contact surface between piston and cylinder. Several different applications and processes were developed on the field of thermal spray technology. Due to the lack of space inside the cylinder and the adhesive properties of thermally sprayed layers, the modification of conventional techniques is difficult. In the process of internal centrifugal projection coating (iCPC), a rotating additive material is melted on the front side by an electron beam. This paper focuses on the iCPC process that was developed as an alternative coating method to thermal spraying processes, mainly for internal coating of bores with a diameter less than 100 mm. Paper includes a German-language abstract. Paper text in German.