Interface microstructure of porous Ni–Ti and Co–Cr–Mo powder alloy couple fabricated by SHS process

Abstract

In this study, porous Ni–Ti and Co–Cr–Mo alloy couple was fabricated by powder metallurgy (PM) process. With this aim, Ni–Ti and Co–Cr–Mo alloys powder was compacted into the mould one by one with Co–Cr–Mo being the one side and Ni–Ti the other side. Then, Ni–Ti side of the specimen was synthesised by self-propagating high temperature synthesis (SHS) process. At the end of the SHS process (after the SHS process), the porous Ni–Ti alloy has occurred. Finally, the specimen was sintered at 1050°C into argon atmosphere. Scanning electron microscope with energy dispersive X-ray spectroscopy and X-ray diffractometer were used to characterise the microstructure and composition. It was seen from the results that porous Ni–Ti and Co–Cr–Mo alloy couple was successfully fabricated by PM process.