Method for applying a lubricating layer to an exposed surface subjected to frictional stress of an object and an object having a lubricating layer adhered to the exposed surface

摘要

The invention relates to a method for the application of a lubricant layer to a frictionally stressed surface of an object, and to a corresponding object, the lubricant layer, in use, containing boric acid. For production, the object is introduced into a reactor and the reactor is evacuated. Then, to produce an adhesion-promoter layer, a process gas is introduced, which contains boron, nitrogen and/or carbon at least in the form of a compound or releases the corresponding element under process conditions, and penetrates into the region of the surface of the object, in particular by diffusion. To produce an intermediate layer containing boron and oxygen, a second precursor material, which contains boron at least in the form of a compound and releases the boron under process conditions, and a first precursor material, which contains oxygen at least in the form of a compound and releases the oxygen under process conditions, are introduced into the depositing gas phase. At the latest in use, the boron and the oxygen of the intermediate layer are at least partially converted, at least in the region of their freely accessible surface, into boric acid as dry lubricant with the aid of hydrogen.