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Protection and Magnetism United for Wear ControlMagnetron sputtered wear resistance coatings are industrially established and capable to enhance tool lifetimes significantly. However, in cases where optical inspection of a coating in use is not possible, an intrinsic sensor function of the film would be beneficial. Now, the research groups led by M. Stüber, A. Ludwig and E. Quandt have suggested the development of wear resistant coatings with an integrated sensor functionality based on the insertion of a magneto-elastic ferromagnetic phase. In combination with appropriate read-out electronics, such a film system would be ready for online monitoring of the coatings’ actual state (e.g., strain, temperature, volume loss). The researchers prepared multilayer coatings by alternate stacking of magnetron sputtered TiN and FeCo layers with a nominal total thickness of 1000 nm as a model system meeting the above conditions.
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