Procedure for forming, on a solid substrate, a film with properties similar to those of diamonds, the solid bodies so coated and the self-sustained film so obtained

Abstract

The main goal of this invention patent is a procedure for forming an amorphous carbon film over a solid, which film has physical and chemical properties similar to those of diamond. Its ancillary objects are the solid bodies so coated and the self-sustained film obtained in a subsequent stage of dissolution of said substrate. The application field is quite wide, and we cite: tools, shafts and bushings of certain mechanisms, surgical prostheses, lens protection and other optical devices, etc. The inventive idea consists of generating a highly accelerated beam of carbon-hydrogenated ions, which is made to impact with sufficiently high energy on the surface of the substrate. The beam is concentrated by electrostatic lenses and homogenized by a magnetic mass separator. The main objectives of this invention are: a procedure for forming, on a solid substrate, a film with properties similar to those of diamond: high hardness, high chemical stability, transparency, high heat conductivity and high electric resistivity; obtainable at ambient temperature, simpler than known procedures; able to produce a smooth film, regardless of the electrical qualities of said substrate and of its geometry, and with such a degree of adherence that it does not allow separation of this film other than by destructive means.