Effect of anodizing on surface integrity of Grade 4 titanium for biomedical applications

M. Manjaiah, Rudolph F. Laubscher

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Titanium-based alloys are widely used in the biomedical field due to various favourable material properties. These include low density, high corrosion resistance and good mechanical and biocompatible properties. Surface integrity descriptors such as topography, surface chemical composition and aesthetic appearance are important for adequate part performance. Various surface engineering treatments are routinely applied to obtain improved performance. The current investigation examines the effect of anodizing on the oxide layer thickness and composition, surface topography and aesthetic appearance. Anodizing is conducted on especially finished (Sa ± 13 nm) Grade 4 titanium specimen at various voltages in a H2SO4 electrolyte. Surface analysis consisted of atomic force microscopy (AFM), scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDS), X-ray diffractometry (XRD) and UV spectrophotometry. The results show that highly-ordered oxide structures in partially anatase and rutile TiO2 substrates are readily achieved. Various interference colours are readily achieved with different anodizing process parameters. An increase in anodizing voltage leads to layer thickness growth, increased roughness and changes in surface phase composition. An increase in oxide layer thickness is coincident with an increase in surface roughness. Reference is made throughout the paper to the effect of the various surface integrity descriptors measured, on the perceived biomedical effect of implant performance of the specific descriptor in question based on published data.

Original languageEnglish
Pages (from-to)263-272
Number of pages10
JournalSurface and Coatings Technology
Volume310
DOIs
Publication statusPublished - 25-01-2017

Fingerprint

anodizing
Anodic oxidation
Titanium
integrity
grade
titanium
Oxides
Surface topography
Surface roughness
Surface analysis
Spectrophotometry
Electric potential
oxides
Chemical analysis
Phase composition
topography
Titanium dioxide
X ray diffraction analysis
Electrolytes
Corrosion resistance

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

@article{f923669b9f3940fbb1c6d27758891227,
title = "Effect of anodizing on surface integrity of Grade 4 titanium for biomedical applications",
abstract = "Titanium-based alloys are widely used in the biomedical field due to various favourable material properties. These include low density, high corrosion resistance and good mechanical and biocompatible properties. Surface integrity descriptors such as topography, surface chemical composition and aesthetic appearance are important for adequate part performance. Various surface engineering treatments are routinely applied to obtain improved performance. The current investigation examines the effect of anodizing on the oxide layer thickness and composition, surface topography and aesthetic appearance. Anodizing is conducted on especially finished (Sa ± 13 nm) Grade 4 titanium specimen at various voltages in a H2SO4 electrolyte. Surface analysis consisted of atomic force microscopy (AFM), scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDS), X-ray diffractometry (XRD) and UV spectrophotometry. The results show that highly-ordered oxide structures in partially anatase and rutile TiO2 substrates are readily achieved. Various interference colours are readily achieved with different anodizing process parameters. An increase in anodizing voltage leads to layer thickness growth, increased roughness and changes in surface phase composition. An increase in oxide layer thickness is coincident with an increase in surface roughness. Reference is made throughout the paper to the effect of the various surface integrity descriptors measured, on the perceived biomedical effect of implant performance of the specific descriptor in question based on published data.",
author = "M. Manjaiah and Laubscher, {Rudolph F.}",
year = "2017",
month = "1",
day = "25",
doi = "10.1016/j.surfcoat.2016.12.038",
language = "English",
volume = "310",
pages = "263--272",
journal = "Surface and Coatings Technology",
issn = "0257-8972",
publisher = "Elsevier",

}

Effect of anodizing on surface integrity of Grade 4 titanium for biomedical applications. / Manjaiah, M.; Laubscher, Rudolph F.

In: Surface and Coatings Technology, Vol. 310, 25.01.2017, p. 263-272.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Effect of anodizing on surface integrity of Grade 4 titanium for biomedical applications

AU - Manjaiah, M.

AU - Laubscher, Rudolph F.

PY - 2017/1/25

Y1 - 2017/1/25

N2 - Titanium-based alloys are widely used in the biomedical field due to various favourable material properties. These include low density, high corrosion resistance and good mechanical and biocompatible properties. Surface integrity descriptors such as topography, surface chemical composition and aesthetic appearance are important for adequate part performance. Various surface engineering treatments are routinely applied to obtain improved performance. The current investigation examines the effect of anodizing on the oxide layer thickness and composition, surface topography and aesthetic appearance. Anodizing is conducted on especially finished (Sa ± 13 nm) Grade 4 titanium specimen at various voltages in a H2SO4 electrolyte. Surface analysis consisted of atomic force microscopy (AFM), scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDS), X-ray diffractometry (XRD) and UV spectrophotometry. The results show that highly-ordered oxide structures in partially anatase and rutile TiO2 substrates are readily achieved. Various interference colours are readily achieved with different anodizing process parameters. An increase in anodizing voltage leads to layer thickness growth, increased roughness and changes in surface phase composition. An increase in oxide layer thickness is coincident with an increase in surface roughness. Reference is made throughout the paper to the effect of the various surface integrity descriptors measured, on the perceived biomedical effect of implant performance of the specific descriptor in question based on published data.

AB - Titanium-based alloys are widely used in the biomedical field due to various favourable material properties. These include low density, high corrosion resistance and good mechanical and biocompatible properties. Surface integrity descriptors such as topography, surface chemical composition and aesthetic appearance are important for adequate part performance. Various surface engineering treatments are routinely applied to obtain improved performance. The current investigation examines the effect of anodizing on the oxide layer thickness and composition, surface topography and aesthetic appearance. Anodizing is conducted on especially finished (Sa ± 13 nm) Grade 4 titanium specimen at various voltages in a H2SO4 electrolyte. Surface analysis consisted of atomic force microscopy (AFM), scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDS), X-ray diffractometry (XRD) and UV spectrophotometry. The results show that highly-ordered oxide structures in partially anatase and rutile TiO2 substrates are readily achieved. Various interference colours are readily achieved with different anodizing process parameters. An increase in anodizing voltage leads to layer thickness growth, increased roughness and changes in surface phase composition. An increase in oxide layer thickness is coincident with an increase in surface roughness. Reference is made throughout the paper to the effect of the various surface integrity descriptors measured, on the perceived biomedical effect of implant performance of the specific descriptor in question based on published data.

UR - http://www.scopus.com/inward/record.url?scp=85007508452&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85007508452&partnerID=8YFLogxK

U2 - 10.1016/j.surfcoat.2016.12.038

DO - 10.1016/j.surfcoat.2016.12.038

M3 - Article

VL - 310

SP - 263

EP - 272

JO - Surface and Coatings Technology

JF - Surface and Coatings Technology

SN - 0257-8972

ER -