Ceramic-metal interface fabricated by spark plasma sintering and its mechanical properties

Abstract

Much attention has been paid to composites made from biocompatible ceramics and metals in the medical field because the composites are expected to exhibit high mechanical properties and biocompatibility. The interfacial properties between ceramic/metal should be elucidate to evaluate their mechanical properties. In this study, we fabricated square pillar-shaped specimens with an interface made of partially stabilized zirconia (PSZ) and pure titanium (Ti) by the spark plasma sintering (SPS) technique. Then, bending tests were performed to evaluate the strength of the PSZ-Ti interface. As a result, fracture occurred within a reaction layer which was formed around the PSZ-Ti interface, and the bending strength of the PSZ-Ti interface lower than that of the monolithic PSZ and Ti.