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DLC-coatings are commonly used in industry as a wear protective layer and as a solid lubricant for highly loaded tribological contacts. In order to evaluate the wear performance of different DLC-coatings under unlubricated oscillating sliding wear conditions and to validate the reliability of coated components, many wear-tests with simple model-geometries as well as expensive endurance-tests with the real application conditions have to be performed. This is because the transfer of the wear results to different contact conditions (variation of load, application geometry) is not yet possible. In an earlier paper a novel unified dissipated energy model for the ball-on-plate-geometry was developed and its transferability to different types of coatings was verified. In this paper the model was applied to different load steps and a piston-cylinder-geometry in order to verify its generality. The analytical wear calculation tool-the Global Incremental Wear Model (GIWM)-was revised by considering different load steps and by implementing a new approach for the calculation of wear in the piston-cylindercontact. Based on the good agreement between the experimental results and both wear and friction simulations, the validity of the unified wear model regarding its transferability to different loading histories and geometries was successfully proven.

Hard magnetic (HM) thin films have been vertically integrated below giant magnetoresistive (GMR) multilayer sensors in order to shift the operating point of an applicable GMR sensor. The shift in maximum magnetoresistance (MR) peaks was found to be dependent on the thickness of the HM layer. As a result of different bias geometries, which have been tested, current shunting effects mainly reduce the maximum MR amplitudes. A strong microstructural influence on the magnetotransport has been found; meander-shaped microstructures with different stripe widths have been microfabricated in order to investigate the influence of shape anisotropy and stray field geometry on the magnetotransport. As a result, the bias strength, as well as the shape of the HM hysteresis, varies with the underlying microstructured pattern geometries and the angle of applied field. Comparing the major MR loops of meanders with 1.5, 5, and 10 μm structure width of HM/GMR systems, different MR behavior has been found. It was determined that the MR loops are shifted by different field values simultaneously with a change in the MR loop shape. The effect depends on the orientation of applied field with respect to the meander structure, as well as on the structure width. A creeping effect, which demagnetizes the hard layer, has not been observed during sine-shaped switching cycles. The MR response signal of biased multilayers can be understood using numerical calculations.