Masters Theses

Abstract

"The world's resources of metals are decreasing. Due to this and the cost of replacing corroded materials, it has come to be realized that prevention is better than cure. The increasing demand for molybdenum and molybdenum alloys has stimulated a great amount of research into the corrosion characteristics of these materials. The result of such research has assisted in the development of suitable molybdenum alloys and protective coatings to retard corrosion. When a molybdenum anode and a suitable cathode are immersed in an oxygen-free electrolyte and are connected to a direct current power source, molybdenum is dissolved. This process is called anodic dissolution and a study of it is useful for many reasons: (1) The apparent valence of the metal undergoing dissolution can be determined. (2) An empirical expression for the dissolution rate can be established. (3) A dissolution reaction mechanism can be hypothesized that may aid in retarding corrosion and predicting behavior in other environments. The mechanism of the anodic dissolution of molybdenum has been formulated only in very vague terms. The purpose of this investigation was to study the dissolution in sulfuric acid solutions of various pH and if possible to establish a mechanism consistent with the data. Toward this end, experiments were performed to determine the relationships between the current density, potential, pH, and faradaic efficiency during dissolution. The effect of chloride ion on the process was also determined"--Introduction, page 1.

Advisor(s)

Johnson, James W., 1930-2002

Committee Member(s)

Strunk, Mailand R., 1919-2008
James, William Joseph

Department(s)

Chemical and Biochemical Engineering

Degree Name

M.S. in Chemical Engineering

Sponsor(s)

University of Missouri - Rolla. Graduate Center for Materials Research

Publisher

University of Missouri--Rolla

Publication Date

1969

Pagination

x, 65 pages

Rights

© 1969 Ching-Kuo Chen, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Subject Headings

Corrosion and anti-corrosivesMolybdenum alloysMolybdenum

Thesis Number

T 2213

Print OCLC #

6003546

Electronic OCLC #

806492416

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