Sulzer Metaplas Gmbh

Jean-Marie Jacquet

Marc Sercu

Frederick G Wietig

Wim Pappaert

Koen Vanhollebeke

The invention relates to a coating comprising a number of layered structures, each such layered structure comprising&#x2014;a first layer comprising a diamond like nanocomposite layer, said first layer comprising carbon, hydrogen, oxygen and silicon; a second layer comprising a diamond like carbon layer. The number of layered structure is higher than 4 and is preferably between 10 and 100. The invention further relates to a method to deposit such a coating.

Coating comprising layered structures of diamond like nanocomposite layers and diamond like carbon layers

A piston ring () is covered at least partially with a layered structure (). The layered structure () comprises: &#x2014;a first intermediate layer () comprising at least one element of group IVB, group VB or group VIB; &#x2014;a second intermediate layer () deposited on top of the first intermediate layer () and comprising a diamond-like nanocomposite composition; &#x2014;a diamond-like carbon layer () deposited on top of the second intermediate layer ().

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Brussels, Belgium

Jean-Marie Jacquet