Influence of Zr content on immersion and electrochemical corrosion behavior of as-cast TiZr alloys

Abstract

Purpose The purpose of this paper is to study the influence of Zr content on immersion and electrochemical corrosion behavior of Zr-containing Ti-based (TiZr) alloys. Design/methodology/approach The phase analysis of as-cast TχZAB alloys was carried out using X-ray diffraction. The microstructure of corrosion surfaces of the samples was observed using optical metallographic microscopy and scanning electron microscopy, equipped with energy dispersive spectroscopy. Findings The immersion test reveals that the corrosion is alleviated in the presence of a high amount of Zr, whereas pitting corrosion occurs when the Zr content is up to 40 Wt.%. Furthermore, the electrochemical analysis demonstrates that the corrosion resistance TiZr alloys is improved with increasing Zr content. Originality/value The TiZr alloys are promising candidates for high-end applications because of their excellent comprehensive properties. These alloys are usually used in marine or other harsh corrosive environments; therefore, it is essential to study their corrosion behavior.

Microstructure and Properties of Monolayer Ta and Multilayer Ta/Ti/Zr/Ta Coatings Deposited on Biomedical Ti-6Al-4V Alloy by Magnetron Sputtering

“…Although several novel Ti alloys are emerging, the Ti6Al4V alloy is the most widely (such as hip joints, dental implants, prostheses, etc.) due to its superior performance in terms of relatively low elastic modulus, good biocompatibility, and suitable mechanical support [4][5][6][7][8]. Nevertheless, there are certain disadvantages when it is in contact with body fluids, such as the release of biotoxic metal ions (e.g., V 5+ and Al 3+ ); Moreover, its relatively poor wear resistance restricts the application in organisms and thus, its application has been limited [9][10][11].…”