Sintering and Mechanical Properties of Titanium Composites Reinforced Nano Sized Al2O3 Particles

Abstract

Abstract-This study aims to compare the effect of Al 2 O 3 nano-particle additions on the densification, mechanical and electrochemical properties of Titanium (Ti) matrix composites. The Ti and Al 2 O 3 nano-particles were dry mixed and molded using by traditional Powder Metallurgy (PM) techniques. After the molded process, the samples were sintered at 1200º C and 1300º C for 60 min. under high level vacuum. Mechanical property, microstructural characterization and electrochemical property of the sintered samples were performed using tensile testing, hardness, optical, scanning electron microscopy and electrochemical corrosion experiments. All the powders, fracture surfaces of sintered samples were examined using scanning electron microscope. The sintered density of straight as well as Al 2 O 3 nano-particles reinforced Ti matrix composites increases with the increase in sintering time. The additions of Al 2 O 3 nano-particles improve the hardness values and corrosion behavior with the increase of sintering time.

Effect of process parameters on hardness and microstructure of graphene reinforced titanium composites

“…5 The powder metallurgy (PM) process is more suitable and cost-effective method to fabricate TMCs. 6,7…”

“…5 The powder metallurgy (PM) process is more suitable and cost-effective method to fabricate TMCs. 6,7 Graphene has attracted major interest because of its many extraordinary properties. It conducts heat and electricity efficiently; it is nearly transparent and also it is 100-300 times stronger than steel.…”