Method for applying a high-temperature lubricant

Abstract

The present invention relates to a method for applying hexagonal boron nitride to a rough surface, wherein it is intended for the boron nitride to be provided as a temperature-resistant lubricant of the surface. According to the invention, a pin composed of hexagonal boron nitride is rubbed with pressure over the rough surface, such that abraded boron nitride adheres to the surface.

1 . Method for applying hexagonal boron nitride as lubricant onto a surface, characterized in that hexagonal boron nitride is prepared in the form of a solid piece and this solid piece is rubbed over the surface to be lubricated in such a manner that boron nitride components are abraded from the solid piece and adhere to the surface as abrasion. 
     
     
         2 . Method according to  claim 1 , characterized in that the solid piece is obtained essentially through sintering of hexagonal boron nitride. 
     
     
         3 . Method according to one of the  claims 1  and  2 , characterized in that the abrasion is achieved through rubbing with a pressure of at least 5 bar, preferably between 10 bar and 40 bar and even more preferably with a pressure of 30 bar. 
     
     
         4 . Application of the method according to one of the preceding claims on bayonet slits of a confinement ring of an ARC source. 
     
     
         5 . Confinement ring of an ARC source with bayonet slits, whose surface in the area of the bayonet slits is provided at least partly with hexagonal boron nitride as lubricant, characterized in that the hexagonal boron nitride adheres to the surface in the form of conglomerates and in that the majority of the conglomerates are formed each from a plurality of tightly linked powder particles, wherein the linking of the powder particles is preferably achieved through a sintering process. 
     
     
         6 . Solid piece of hexagonal boron nitride, characterized in that the solid piece is made as a pin and therefore the solid piece can be inserted into slits and the solid piece can be rubbed onto the walls of the slits. 
     
     
         7 . Solid piece according to  claim 6 , characterized in that the pin has at least a cylindrical extremity. 
     
     
         8 . Lead holder a lead made of a solid piece according to one of the  claims 6  and  7 .