Texture of Graphitized Films Prepared from Polyimide

A high-temperature heat treatment of polyimide (Kapton) film yielded a highly oriented graphite film, composed of thin graphite layers with 6-7nm in thickness. The hexagonal lattice formation of graphite depends on the heat treated temperature (HTT), and the orientation of the graphite layer preferentially proceeds from the surface of the film. As the results, the orientation of the graphite layer at the surface is superior than inner parts. The graphite films are particularly suitable for constituting optical components for X-ray monochromater.