Electronic Theses and Dissertations

Identifier

4806

Date

2016

Date of Award

11-23-2016

Document Type

Thesis

Degree Name

Master of Science

Major

Mechanical Engineering

Committee Chair

Ebrahim Asadi

Committee Member

Gladius Lewis

Committee Member

Steven F Wayne

Abstract

A review of current deposition processes is presented as they relate to osseointegration of metallic bone implants. The objective is to present a comprehensive review of different deposition processes used to apply microstructured and nanostructured osteoconductive coatings on metallic bone implants. Implant surface topography required for optimal osseointegration is presented. Five of the most widely used osteoconductive coating deposition processes are reviewed in terms of their microstructure and nanostructure, usable thickness and cost, all of which are summarized in tables and charts. Plasma spray techniques offer cost-effective coatings, but exhibits deficiencies with regard to osseointegration such as, high density, amorphous coatings. Electrodeposition and aerosol deposition techniques facilitate the development of a controlled-microstructure coating at a similar cost. Nano scale physical vapor deposition and chemical vapor deposition offers an alternative approach by allowing the coating of a highly structured surface without significantly affecting the microstructure. Various biomedical studies on each deposition process are reviewed along with applicable results. Suggested directions for future research include further optimization of the process-microstructure relation, crystalline plasma spray coatings and the deposition of discrete coatings by additive manufacturing.

Comments

Data is provided by the student.

Library Comment

dissertation or thesis originally submitted to the local University of Memphis Electronic Theses & dissertation (ETD) Repository.

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