Affiliation:
1. Department of Metallurgical and Materials Engineering Indian Institute of Technology Kharagpur Kharagpur West Bengal 721302 India
2. Centre for Laser Processing of Materials (CLPM) International Advanced Research Centre for Powder Metallurgy and New Materials P.O. Balapur Hyderabad 500005 Telangana India
3. Birla Institute of Technology, Mesra Mesra Jharkhand 835215 India
Abstract
Herein, the detailed corrosion behavior of ultrafast laser‐surface structured Ti6Al4V (using a Ti: Sapphire laser processed under optimum parameters) is carried out in simulated body fluid using electrochemical impedance spectroscopy and correlated with surface characteristics. Laser structuring leads to a topographically modified surface consisting of periodic surface patterns (nanoripples, nanodots) in the presence of a thin oxide layer. Surface processing introduces strain on the surface up to a depth of 150 μm, with the grains aligned along the and planes. The detailed electrochemical impedance spectroscopic studies show the formation of stable passive layers in surface‐structured Ti6Al4V as compared to as‐received Ti6Al4V.
Funder
Alexander von Humboldt Foundation
Subject
Materials Chemistry,Electrical and Electronic Engineering,Surfaces, Coatings and Films,Surfaces and Interfaces,Condensed Matter Physics,Electronic, Optical and Magnetic Materials