Corrosion resistant coating based on silicon, carbon, hydrogen and nitrogen

Abstract From the Canadian patent

The invention relates to a coating comprising a thin film which is intended to protect a corrodible part against corrosion and to some extent, against wear and friction said coating essentially comprising a composition containing silicon carbon, hydrogen and nitrogen such that: the atomic hydrogen concentration measured using the ERDA technique, is 20 ± 5 atoms %; the atomic silicon concentration measured using the Rutherford backscattering (RBS) technique is between 15 and 28 atoms %; the ratio of the atomic concentrations of nitrogen and carbon (N/C) is greater than 0.9; and the hardness of the material is less than or equal to 2100 daN/mm2.