Mineral Coated Surface Coatings for Steam Turbine Compressor Blades

Source: Wismar University of Applied Sciences

The MCS-blades project aims to develop Mineral Coated Surface (MCS) coatings for steam turbine compressor blades to provide wet corrosion protection and erosion resistance.

INNO HEAT has the know-how for enamelling surfaces by means of induction. Due to the material and the process, there are far-reaching potentials for the application of the process. It is necessary to develop a system technology that can be used for the respective application as well as material modifications in order to make these potentials usable. Major challenges exist for the coating of gas turbine compressor blades, where protection against wet corrosion and drop erosion must be achieved at the same time to increase service life. Due to the REACH regulation, a new, CrVI-free coating system is also required. The enamel is a mineral coating (MSC) with mainly oxide composition, applied in one or more layers, partly with additives, on metallic workpieces. A key objective in the project is to achieve high adhesion strength, both for static and dynamic (drop erosion, vibration) stress. The adhesion strength is based on phenomena in the interface and makes demands on the kinetics of the baking process and on modifications of the material.

 


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