The Corrosion Behavior of Titanium Alloys in Chloride Solutions: Materials for Surgical Implants

摘要

Because certain titanium alloys are of interest as surgical implants, the corrosion behavior of alloys Ti-8Al-1Mo-1V in both the single and duplex annealed conditions and Ti-6Al-6V-2Sn at yield strength levels of 140, 160, and 180 ksi were studied in 0.17M sodium chloride solution (the approximate NaCl concentration in blood, plasma, and lymph) and Hanks's physiological solution (a fairly close imitation, from the chemical viewpoint, of the fluid in muscle and bone) at a temperature of 37 C by electrochemical means, i.e., potential-time, anodic polarization, current density-time for the anodes under potentiostatic control at the equilibrium potential. Electrochemical measurements were made with these alloys in both the unstressed and stressed conditions, and then under conditions of cyclic stress. (Author)