Revetement anti-corrosion a base de silicium, de carbone, d'hydrogene et d'azote.

Anti-corrosion coating for components used in vehicles or construction is made from silicon, carbon, hydrogen and nitrogen with specific atomic structure

Abstract

Un revêtement en couche mince pour protéger vis-à-vis de la corrosion, et dans une certaine mesure contre l'usure et le frottement, une pièce en un matériau corrodable, est essentiellement constitué de silicium, de carbone, d'hydrogène et d'azote dans une composition telle que :- la teneur atomique en hydrogène, mesurée par la technique ERDA, est de 20 +/- 5 atomes %,- la teneur atomique en silicium mesurée par la technique de rétrodiffusion Rutherford (RBS) est comprise entre 15 et 28 atomes %,- le rapport des concentrations atomiques de l'azote et du carbone (N/C) est supérieur à 0,9,- la dureté du matériau est inférieure ou égale à 2 100 daN/mm2.
Coating for metal components subject to corrosion is made essentially from silicon, carbon, hydrogen and nitrogen in a compound with the atomic content of hydrogen, measured by the Elastic Recoil Detection Analysis technique (ERDA) is between 15 and 25 atoms per cent, the atomic content of silicon, measured by the Rutherford retrodiffusion technique (RBS) is between 15 and 28 atoms per cent, and the nitrogen/carbon atomic concentration ratio is above 0.9 : 1, with impurities accounting for a maximum of 5 atoms per cent. The coating material's hardness is no greater than 2100 daN/sq mm. The coating is applied with a preferable thickness of 0.5 and 2.5 mu m.

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