Oerlikon Surface Solutions Ag, Pfaffikon

Plasmateria Gmbh

Bernhard Kohlhauser

Jürgen Ramm

Oliver Hunold

Martin Jaroš

Edgar Balter

The invention relates to an apparatus for forming a coating on and/or modifying the properties of the inner surface of a hollow article (), wherein the apparatus comprises a plasma source (), the plasma source () having an elongate shape and comprising a cathode () as well as a target (), wherein the target () is a thermionic electron emission source, wherein the target () is connected to the cathode () in an electrically conductive manner, wherein the plasma source () further comprises a masking () which partially covers the outer surface of the cathode () and the target (), and which masking () is adapted to prevent the formation of plasma on an area covered by the masking () during operation of the apparatus, wherein a plasma formation area () is provided on the target (), which plasma formation area () is not covered by the masking (). The invention further relates to a target (), an arrangement of the apparatus, a method, as well as a hollow article ().

Apparatus and method for coating the inner surface of a hollow article

A method for coating a substrate surrounding a gas turbine blade, including the following steps: in a first step, a MCrAlY matrix is applied by means of a PVD method; in a further step, an oxide layer is applied by means of a PVD method.

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Vienna, Austria

Bernhard Kohlhauser