HIGH STRENGTH, CORROSION-RESISTANT TITANIUM-BASED ALLOY WITH LOW ELASTIC MODULUS

摘要

PURPOSE: A titanium based alloy composition is provided to use as a corrosion resistance implant material harmonizing a high intensity and an elastic modulus coming close to a bone. CONSTITUTION: A corrosion-resistant titanium-based alloy with a high strength and a low elastic modulus comprises 34-44 weight% of niobium; 2-10 weight% of zirconium; 2-10 weight% of silver; titanium of a remainder; and the other unavoidable impurities as a weight ratio. The alloy is selected from 36-40 weight% of niobium; 4-6 weight% of zirconium; is 3-7 weight% of silver as a weight ratio. A remarkable corrosion resistance is given to the alloy by forming a passive state by titanium (Ti) forming a titanium oxide on a surface generally. Niobium (Nb) is an element which improves a workability of a Ti alloy.