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AN ELECTROCHEMICAL EVALUATION OF NEW MATERIALS AND
METHODS FOR CORROSION PROTECTION
by
Esra Kus
A Dissertation Presented to the
FACULTY OF THE GRADUATE SCHOOL
UNIVERSITY OF SOUTHERN CALIFORNIA
In Partial Fulfillment of the
Requirements for the Degree
DOCTOR OF PHILOSOPHY
(MATERIALS SCIENCE)
December 2006
Copyright 2006 Esra Kus
Object Description
| Title | An electrochemical evaluation of new materials and methods for corrosion protection |
| Author | Kus, Esra; Ku[es-cedilla], Esra |
| Author email | esrakus@gmail.com |
| Degree | Doctor of Philosophy |
| Document type | Dissertation |
| Degree program | Materials Science |
| School | Viterbi School of Engineering |
| Date defended/completed | 2006-10-26 |
| Date submitted | 2006 |
| Restricted until | Unrestricted |
| Date published | 2006-11-19 |
| Advisor (committee chair) | Mansfeld, Florian |
| Advisor (committee member) |
Goo, Edward Weiland, James |
| Abstract | An electrochemical evaluation of various electrode/electrolyte systems was performed by means of electrochemical impedance spectroscopy (EIS) and other techniques. Each chapter in this thesis presents an individual project with a specific objective which serves an ultimate goal of finding better materials and methods of corrosion protection. An overview of new environmentally friendly and cost effective materials and corrosion protection methods is given in Chapter 1.; The protective properties of non-toxic, environmentally friendly polymer coatings, which were developed in the purpose of minimizing biofouling and providing corrosion protection on steel, were investigated and discussed in Chapter 2. The corrosion resistance of steel panels coated with crosslinked siloxanes was evaluated using EIS. Differences in protective properties of the coatings were observed due to differences in the degree of fluorination, the way the films were cured and also the degree of crosslinking.; In Chapter 3, a comparison of the corrosion behavior of nanocrystalline (NC) Al 5083 with that of the conventional alloy was made in order to determine what differences if any could be attributed to the NC microstructure. Pit growth rates decreased with time for both materials based on the analysis of the impedance spectra as a function of time. NC samples were resistant to intergranular corrosion whereas conventional Al 5083 was not.; The concept of the bacterial battery is presented in Chapter 4. A galvanic cell with Cu and Al 2024 and an electrolyte containing Shewanella oneidensis MR-1 in a growth medium was prepared. A control cell, which did not contain the bacteria, was also tested. For the cell with MR-1 the maximum power values increased continuously with time, whereas in the control cell the maximum power output was obtained in the first day of exposure.; The objective of the study presented in Chapter 5 was to examine the interaction of MR-1 with different metal surfaces in order to obtain an understanding of the differences in biofilm formation. EIS was effective to a certain extent in monitoring the film growth on copper; the changes in impedance spectra were related to the changes in the properties of the porous film formed on thecopper surface. |
| Keyword | corrosion protection; EIS; MIC; MICI; coatings; nanocrystalline Al 5083 |
| Language | English |
| Part of collection | University of Southern California dissertations and theses |
| Publisher (of the original version) | University of Southern California |
| Place of publication (of the original version) | Los Angeles, California |
| Publisher (of the digital version) | University of Southern California. Libraries |
| Type | texts |
| Legacy record ID | usctheses-m173 |
| Rights | Kus, Esra; Ku[es-cedilla], Esra |
| Repository name | Libraries, University of Southern California |
| Repository address | Los Angeles, California |
| Repository email | http://www.usc.edu/isd/libraries/services/ask_a_librarian/email/ |
| Filename | etd-Kus-20061119 |
| Archival file | uscthesesreloadpub_Volume26/etd-Kus-20061119.pdf |
Description
| Title | Page 1 |
| Full text | AN ELECTROCHEMICAL EVALUATION OF NEW MATERIALS AND METHODS FOR CORROSION PROTECTION by Esra Kus A Dissertation Presented to the FACULTY OF THE GRADUATE SCHOOL UNIVERSITY OF SOUTHERN CALIFORNIA In Partial Fulfillment of the Requirements for the Degree DOCTOR OF PHILOSOPHY (MATERIALS SCIENCE) December 2006 Copyright 2006 Esra Kus |
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