Doctoral Dissertations

Abstract

"Liquid lead and lead-silver alloys were investigated to determine the rates and products of oxidation in pure oxygen at temperatures of 350 to 600°C. The kinetic data were determined using a Cahn electro-balance. Liquid lead was found to follow a cubic rate of oxidation between 350 and 400°C. A parabolic rate was found at temperatures above 400°C. 0.496% silver and 2.258% silver alloys followed a cubic rate of oxidation from 350 to 550°C and tended to approach a parabolic rate of oxidation above this temperature. Silver additions were found to increase the rate of oxidation as compared to the pure lead rates. No significant pressure effects were found over a range of 730 mm to 1 mm Hg of oxygen. Both PbO (orthorhombic) and PbO (tetragonal) were found to be the reaction products at temperatures of 350 and 450°C. At 550°C only PbO (orthorhombic) was found. In all cases, the oxide was preferentially oriented, with the (002) basal plane parallel to the melt surface"--Abstract, page ii.

Advisor(s)

O'Keefe, T. J. (Thomas J.)

Committee Member(s)

Kisslinger, Fred, 1919-2010
Sorrell, Charles A.
Mayhan, Kenneth G.

Department(s)

Materials Science and Engineering

Degree Name

Ph. D. in Metallurgical Engineering

Sponsor(s)

St. Joe Minerals Corporation

Publisher

University of Missouri--Rolla

Publication Date

1970

Pagination

ix, 87 pages

Note about bibliography

Includes bibliographical references (pages 84-86).

Rights

© 1970 Thomas Edward Weyand, All rights reserved.

Document Type

Dissertation - Open Access

File Type

text

Language

English

Subject Headings

Lead alloys -- Oxidation
Silver alloys -- Oxidation
Diffraction patterns
Isothermal transformation diagrams

Thesis Number

T 2390

Print OCLC #

6020380

Electronic OCLC #

852798854

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