Article having a plasma polymer coating and a method for the...

C - Chemistry – Metallurgy – 09 – D

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C09D 183/04 (2006.01) B05D 3/14 (2006.01) B05D 7/24 (2006.01) C23C 16/40 (2006.01)

Patent

CA 2451726

The invention relates to an article that comprises a substrate, and a plasmapolymer coating applied across the surface of the substrate and comprising silicon, oxygen and carbon. An analysis by ESCA gives an amount of substance ratio for O:Si greater than 1.25 and less than 2.6, and the amount of substance ratio for C:Si is greater than 0.6 and less than 2.2. According to a preferred embodiment, the coating contains, based on its total atom content without hydrogen and/or fluorine, a minimum of 22 and a maximum of 27 atomic percent of Si, a minimum of 25 and a maximum of 50 atomic percent of O, and a minimum of 25 and a maximum of 50 atomic percent of C.

L'invention concerne un article comportant un substrat ainsi qu'un revêtement plat lié au substrat et comprenant des polymères plasma, du silicium, de l'oxygène et du carbone. L'analyse dudit revêtement effectuée par spectroscopie électronique pour l'analyse chimique (ESCA) révèle un rapport quantitatif O/Si supérieur à 1,25 et inférieur à 2,6 et un rapport quantitatif C/Si supérieur à 0,6 et inférieur à 2,2. Dans un mode de réalisation préféré de la présente invention, le revêtement comprend, par rapport à son nombre total d'atomes, sans hydrogène et /ou sans Fluor, des pourcentages atomiques de Si s'élevant au minimum à 22 et au maximum à 27, des pourcentages atomiques d'O s'élevant au minimum à 25 et au maximum à 50, et des pourcentages atomiques de C s'élevant au minimum à 25 et au maximum à 50.

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