Siemens Aktiengesellschaft

Jorg Schurhoff

Armin De Lazzer

Torsten-Ulf Kern

Jochen Barnikel

Shilun Sheng

Christian Bohme

A turbomachine component is provided having at least two sub-components that are separated by a parting joint and each have a sealing surface at the parting joint, at least one of the two sealing surfaces being convex in order to form a linear contact of the two sealing surfaces. At least one of the sealing surfaces has a coating on it which includes a hard material, is a maximum of 30 &#x3bc;m thick and is applied using a vapour deposition method, or a coating which includes a chrome-containing alloy, is a maximum of 30 &#x3bc;m thick and is applied by a vapour deposition method, or is a maximum of 300 &#x3bc;m thick and applied using a thermal spraying method.

Turbomachine component with a parting joint, and a steam turbine comprising said turbomachine component

A turbomachine component having a main body and a multilayer coating, which is applied directly to the main body is provided. The multilayer coating is at least 5 &#x3bc;m and at most 35 &#x3bc;m thick and has a plurality of layers applied directly one on top of the other, wherein the layer applied directly to the main body is an adhesion promoting layer, which comprises chromium nitride, and at least one of the remaining layers comprises a hard material.

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Mulheim a.d. Ruhr, Germany

Jorg Schurhoff