Paper Title:
Ti Alloy Surface Modifications and Coatings: An Update
  Abstract

Since 1952 when Branemark first reported osseointegration of titanium (Ti) with bone, many academic and industrial research activities have endeavored to improve the efficacy of Ti or Ti alloy (Ti6Al4V) by modifying the chemistry, topography and design of the implant surface. Strong bonding between implant and host tissue minimize the micromovements that promote fibrous tissue formation at the implant interface that may lead to implant failure. Surface design include lateral holes perpendicular to the implant axis, grooves, variations of spacings between ridges, etc. Physico-mechanical means of surface modification is by grit-blasting with various abrasives (alumina, silica, apatitic abrasive), laser ablation, spark discharge, etc. Chemical modifications include: acid etching, treatment with alkali, treatment with fluoride, coating with titanium or with calcium phosphate (by plasma spray, electromagnetic sputtering, electrochemical deposition). A review of studies on Ti or Ti alloy implants with different surfaces showed the following methods to enhance osseointegration and greater bone formation: (1) grit-blasting with apatitic abrasive; (2) acid-etching with mixed acids; (3) adjusting plasma-spray parameter to get a higher HA/ACP ratio in the coating; (4) employing electrochemical deposition (with pulse modulation) or precipitation to obtain thin coating with homogeneous composition; and/or (5) Ftreatment.

  Info
Periodical
Key Engineering Materials (Volumes 361-363)
Main Theme
Edited by
Guy Daculsi and Pierre Layrolle
Pages
741-744
DOI
10.4028/www.scientific.net/KEM.361-363.741
Citation
J. P. LeGeros, J. L. Wang, E. Garofalo, T. Salgado, R. Z. LeGeros, "Ti Alloy Surface Modifications and Coatings: An Update", Key Engineering Materials, Vols. 361-363, pp. 741-744, 2008
Online since
November 2007
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Racquel Z. LeGeros, John P. LeGeros
Abstract:Plasma-sprayed ‘HA’ coatings on commercial orthopedic and dental implants were developed to combine the strength of the metal (Ti or Ti...
203
Authors: Takayuki Narushima, Kyosuke Ueda, Takashi Goto, Tomoyuki Katsube, Hiroshi Kawamura, Chiaki Ouchi, Yasutaka Iguchi
Abstract:Calcium phosphate films were coated on commercially pure titanium substrates by radiofrequency magnetron sputtering using β-tricalcium...
551
Authors: Kyosuke Ueda, Takayuki Narushima, Tomoyuki Katsube, Hiroshi Kawamura, Takashi Goto
Abstract:Calcium phosphate coating films were fabricated on mirror-polished or blast-treated titanium substrates using radio-frequency (RF) magnetron...
305
Authors: E. Gemelli, Christiane Xavier Resende, Carlos M. Lepienski, Gloria Dulce de Almeida Soares
Abstract:In this study we report on the microstructure and its mechanical behavior of a Ca-P coating produced on bioactive titanium by immersion in a...
365
Authors: Takayuki Narushima, Kyosuke Ueda, Takashi Goto, Jun Kurihara, Hiroshi Kawamura
Abstract:Oxyapatite, amorphous calcium phosphate, and double-layered calcium phosphate coating films were fabricated on mirror-polished commercially...
2162