In-situ formation, anti-corrosion and hardness values of Ti-6Al-4V biomaterial with niobium via laser deposition

Lerato Phume, A. P.I. Popoola, V. S. Aigbodion, Sisa Pityana

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Ti-6Al-4V alloy biomaterials have low hardness, wear resistance, high corrosion rate and toxicity as results of release of aluminium and vanadium ions that led to the premature failure of the implant. In order to overcome some of these problems, laser cladding of Ti6Al4V alloy with Niobium was conducted. Three laser parameters (laser power, beam diameter and laser scan speed) were used to ascertain the proper operating condition for this laser process. Rofin Nd: Yag laser was used in the laser cladding. The electrochemical study was conducted using Hank's buffered salt solution an environment similar to the human body. The optimum improvement in corrosion resistance resulted to 81.79% when compared with substrate. It has been established that operating parameter for laser cladding of Nb on Ti6Al4V were obtained at: Laser power (1,000 W), beam diameter (1 mm) and scan speed (0.3 m/min).

Original languageEnglish
Pages (from-to)23-39
Number of pages17
JournalInternational Journal of Surface Science and Engineering
Volume12
Issue number1
DOIs
Publication statusPublished - 2018
Externally publishedYes

Keywords

  • Laser parameters
  • Microstructure and corrosion
  • Niobium
  • Ti-6Al-4V alloy

ASJC Scopus subject areas

  • Mechanical Engineering
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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