Abstract
A method is presented for manufacturing composite castings that are reinforced by ceramic preforms that have a porous spatial structure. The ceramic preforms were made from oxide ceramic in the form of ZrO2 and Al2O3. Composite castings were produced using the pressure-less infiltration method of ceramic preforms with cast steel (CS) and high-chromium cast iron (HCCI). A chemical analysis indicated the positive role of Cr, which promoted a physiochemical interaction between the matrix and the phase reinforcement. The hardness of each of the composite zones was higher by at least 150–350 HV0.1 as compared to the base alloys. The presence of the ceramic phase in the microstructure of the composite zones resulted in improved wear resistance of up to 20%.
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