Microstructure and mechanical properties of Ti(C, N)-based cermets with different molybdenum contents
(Huangshi Institute of Technology, Huangshi 435003, China)
Abstract: The microstructure and mechanical properties of Ti(C, N)-based cermets with different content Mo were studied. Different Mo contents were added into Ti(C, N)-based cermets. Effect of sintering temperature on mechanical properties of the cermets was also investigated. Specimens were fabricated by conventional powder metallurgy techniques and vacuum sintered at different temperatures. The microstructure and the fracture morphology were investigated using scanning electron microscope. Transverse strength and hardness were measured. The results show that the microstructure is uniform and the thickness of rim phase is moderate when the content of Mo is 8%. The mechanical properties are the best when the content of Mo is 8% and the sintering temperature is 1450℃.
Key words: Ti(C, N)-based cermets； molybdenum content； sintering temperature； microstructure and mechanical properties