Combining metals and ceramics is of high interest in various fields due to the possibility to create properties neither pure material can achieve. A huge factor in this regard is the composite structure. Interpenetrating Phase Composites (IPCs) consist of at least two phases that are intertwined three-dimensionally. This type of structure shows different properties from more commonly realized structures, especially particle composites (e.g. cermets). Powder injection molding (PIM) can be applied for manufacturing parts of such materials. The material design is challenging, due to different physicochemical behaviors of the materials and possible reactions during sintering. Exemplary PIM-IPCs are iron-tricalcium phosphate (for medical implants) and composites of 316L and different ceramics (Al2O3, SiO2, ZrO2). The development focused on the influences of particle morphology and process parameters on the physicochemical and mechanical properties. Thus, metal-ceramic IPCs with relative densities of more than 97 % and promising mechanical properties were realized.