Effect of niobium oxide on titanium aluminum alloy

Abstract

Titanium - Aluminum  niobium oxide composite was fabricated by powder metallurgy technique. The effect of  Nb₂O₅ ratio addition with (1,1.5, 2, 2.5wt%) on their mechanical , thermal , and microstructure were investigated. By introducing  2.5 %.of Nb₂O₅ the  hardness and compressive strength were increased approximately 20% and 46% respectively more than that of pure sample. while weight loss decreased to 42% at same ratio. Thermal Conductivity of composite in different temperatures (25° , 50° , 75° and  100 ° C)  was decreased 39 % , 43 % , 49 % , and 53  % respectively. Ti-6Al- 2.5% Nb₂O₅ composite formed porous shape with niobium oxide. This kind of  composite could be  a promising candidate for  implant material.