Mtu Aero Engines Ag

Mtu Aero Engines Gmbh

Michael Hillen

Bernd Daniels

Horst Pillhoefer

André Werner

Natividad Lopez Lavernia

Anja Kliewe

Horst Pillhöfer

The present invention relates to a component of a turbomachine with a repair layer and a method for repairing wear-damaged components () of a turbomachine, in particular of elements of a flow duct boundary, having the following method steps:

Repair of worn component surfaces

The present invention relates to a process for producing a diffusion layer for protecting temperature-stressed components, in particular of turbomachines, against oxidation and corrosion. The process comprises application of at least one slip to a component surface on which the diffusion layer is to be produced, and drying and/or hardening of the at least one slip by a heat treatment at a first temperature and diffusion heat treatment at a second temperature. The slip comprises Al-containing powder, Si-containing powder and a binder and also a Cr-containing powder which does not comprise any hexavalent chromium. In addition, the invention provides a corresponding slip.

Slip and process for producing an oxidation- and corrosion-resistant diffusion layer

A method for repairing a component of a gas turbine and a solder alloy are disclosed. In an embodiment, the method includes applying the solder alloy to the component in an area of the component having a punctiform damage or a linear imperfection, where the solder alloy is a mixture of a NiCoCrAlY alloy and a Ni-based solder. A molded repair part made of the solder alloy is applied to the component in an area of the component having a planar defect. The component is heat treated to solder the molded repair part on the component and to solder the solder alloy applied to the component in the area of the component having the punctiform damage or the linear imperfection. The component is cooled after the heat treating and, following the cooling, the component is further heat treated.

Repair of turbine components and solder alloy therefor

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Olching, Germany

Michael Hillen