Abstract: A component made of carbon fiber reinforced plastic is described, consisting of or comprising a matrix material (M) and carbon fibers embedded into the matrix material (M), wherein the component has at least one surface portion (A), having one or a plurality of exposed regions of the carbon fibers, characterized in that the exposed regions(s) of the carbon fibers is or are selectively coated with a layer (S). A process for producing such a component and also an assembly comprising such a component and one or a plurality of further components comprising or consisting of a material such as steel, iron, copper, magnesium or aluminum or alloys thereof are also described.

Abstract: A component made of carbon fiber reinforced plastic is described, consisting of or comprising a matrix material (M) and carbon fibers embedded into the matrix material (M), wherein the component has at least one surface portion (A), having one or a plurality of exposed regions of the carbon fibers, characterized in that the exposed regions(s) of the carbon fibers is or are selectively coated with a layer (S). A process for producing such a component and also an assembly comprising such a component and one or a plurality of further components comprising or consisting of a material such as steel, iron, copper, magnesium or aluminum or alloys thereof are also described.

Abstract: A hand-device is described for penetrating a heat-insulating layer of a corrodible metal object and for examining a pipeline for corrosion, preferably for penetrating a heat-insulating layer of a corrodible metal pipeline, with a penetrating body that comprises a pointed section for displacing the insulating layer and a holding section for receiving a driving force, and a detecting device for generating a signal as a response to a stimulus caused by corrosion, wherein the detecting device is arranged proximally to the pointed section of the penetrating body. Corresponding methods as well as uses are also described.