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Fabrication of compositionally and structurally graded Ti–TiO2 structures using laser engineered net shaping (LENS)

Paper ID Volume ID Publish Year Pages File Format Full-Text
1340 81 2009 7 PDF Available
Title
Fabrication of compositionally and structurally graded Ti–TiO2 structures using laser engineered net shaping (LENS)
Abstract

Novel structures with functional gradation in composition and structure were successfully made in Ti–TiO2 combination using laser engineered net shaping. The addition of fully dense, compositionally graded TiO2 ceramic on porous Ti significantly increased the surface wettability and hardness. The graded structures with varying concentrations of TiO2 on the top surface were found to be non-toxic and biocompatible. In addition, the higher wettability of surfaces with TiO2 can enhance their ability to form chemisorbed lubricating films, which can potentially lower the friction coefficient against ultrahigh molecular weight polyethylene liner, thus reducing its wear rate. These unitized structures with open porosity on one side and hard, low friction surface on the other side can eliminate the need for multiple parts with different compositions for load-bearing implants such as total hip prostheses.

Keywords
Functionally graded materials; Laser processing; Laser engineered net shaping (LENS); Biocompatibility; Osteoblast
First Page Preview
Fabrication of compositionally and structurally graded Ti–TiO2 structures using laser engineered net shaping (LENS)
Publisher
Database: Elsevier - ScienceDirect
Journal: Acta Biomaterialia - Volume 5, Issue 5, June 2009, Pages 1831–1837
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering