Comminution of particulate multicomponent systems has always been of major im-portance in the preparation of heterogeneous raw material mixtures. In addition, for particle-based product design with multicomponent systems, comminution processes are often used first to set the optimum particle size of the respective material, followed by intensive mixing processes downstream to homogenize the components. The production of fine particles down to the nanometer range and their processing into homogeneous suspensions is a common application for comminution and dispersing within stirred media mills. While in the past the comminution of single components with this type of mill has already been intensively studied and can be described very well by semi-predictive models, systematic studies on the wet comminution of multi-com-ponent systems are missing so far. This is the starting point for the present work, in which a mechanistic understanding of the interactions of different components during multicomponent comminution is obtained and suitable operating modes for the tar-geted processing of mixtures are derived. By establishing suitable sample preparation methods, selective particle size analyses could be realized and thus information on material-process interactions became ac-cessible. The results of this thesis show several interesting effects for multicomponent comminution in the investigated fineness range from a few micrometers to some hun-dred nanometers. On the one hand, there is a protection effect of coarser particles on the stress of the finer particles between the grinding media. On the other hand, the material-specific fracture properties of several components influence each other, es-pecially in the submicron particle size range, when many small particles are caught by the grinding media. In this case, the comminution result is then determined by the mix-ture-dependent total breakage strength of all caught particles. Simultaneously, an in-crease in energy utilization can also be observed in the comminution of mixtures. On the process side, the capture behavior of the grinding media and the level of the chosen stress energy in particular have a decisive influence on the resulting comminution prod-uct. Furthermore, the formulation influences the expression of these effects through the selected total solids concentration, the mixing and particle size ratio of the compo-nents, as well as the desired fineness range. Based on the correlations presented, selective comminution of the softer mixture com-ponent, uniform comminution of the mixture and sequential comminution for the tar-geted production of multicomponent formulations could be defined as suitable process strategies. For the latter in particular, further studies on the production of coating sus-pensions for lithium-ion batteries underline the high application potential of multicom-ponent comminution in stirred media mills.weiterlesen