Masters Theses

Abstract

"A novel dip-coating process for depositing cerium oxide on aluminum has been previously developed at the University of Missouri-Rolla. The original intent of developing the novel coating process was to produce chromate-free conversion coatings for corrosion protection of aluminum. Subsequently, the new coating technique was expanded to include substrates other than aluminum, such as nickel and copper.

This report focuses on characterizing cerium oxide coatings deposited on copper using a spontaneous dip coating technique. Specifically, it focuses on possible routes to the coating’s nucleation and characterization of the coating and the coating/substrate interface. Extensive transmission electron microscopy studies have been performed on the coatings as well as x-ray photoelectron spectroscopy. The transmission electron microscopy studies were done to obtain average particle sizes and distributions, coating thicknesses, lattice d-spacings, and interface information. The x-ray photoelectron spectroscopy was done to obtain oxidation state information at the coating/substrate interface.

It was found that the average particle size and the pH with which they were associated did not correspond to the pH observed at the coating/substrate interface in aqueous precipitation experiments. It was also found from diffraction measurements that the coatings are most closely matched with CeO2 and that the interface between the coatings and their substrates is abrupt, with no mixed oxide layer separating the coating from the substrate as was seen in the case of coatings on aluminum"--Abstract, page iii.

Advisor(s)

Miller, F. Scott, 1956-

Committee Member(s)

O'Keefe, Matthew
Fahrenholtz, William

Department(s)

Materials Science and Engineering

Degree Name

M.S. in Metallurgical Engineering

Publisher

University of Missouri--Rolla

Publication Date

Summer 2005

Pagination

ix, 57 pages

Note about bibliography

Includes bibliographical references (pages 53-56).

Rights

© 2005 Kurt Thomas Koch, All rights reserved.

Document Type

Thesis - Restricted Access

File Type

text

Language

English

Subject Headings

Cerium oxides
Coating processes -- Technological innovations
Copper
Dielectric films
Transmission electron microscopy

Thesis Number

T 8738

Print OCLC #

62508761

Electronic OCLC #

1088893837

Link to Catalog Record

Electronic access to the full-text of this document is restricted to Missouri S&T users. Otherwise, request this publication directly from Missouri S&T Library or contact your local library.

http://laurel.lso.missouri.edu/record=b5422087~S5

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