Abstract
In this research, the effect of the NiCr coating on the interfacial bonding of the ZrO2-Al2O3 ceramic particles (ZTAP) reinforced high manganese steel-based composites (ZTAP/HMS composites) was investigated. The bare ZTAP and NiCr coated ZTAP reinforced HMS composites were prepared by casting infiltration method. The interfacial layer between bare ZTAP ceramic and high manganese steel matrix existed an unsatisfactory bonding, including numerous cracks and holes. A continuous and dense NiCr alloy coating was deposited on the ZTAP ceramics surface utilizing the high-vacuum multi-arc ion plating. The reaction diffusion of the NiCr alloy in the interfacial layer between ZTA ceramic and high manganese steel matrix caused the metallic transition layer and silicate layer, which further testified the transformation from mechanical bonding to metallurgical bonding.
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