Masters Theses

Abstract

"Cathode polarization curves were obtained for the electrodeposition of zinc from sulfate solutions with pH 2 and zinc concentrations of 10.0, 40.0, 80.0, and 100.0 gpl zinc. Both pure zinc and pure aluminum were used as cathodes with some difference in results noted. The effect of animal glue additions of 0.01, 0.10, and 0.50 gpl of solution on the cathodic polarization curves and the resulting deposit morphologies were determined. These glue additions correspond to 0.20, 2.0, and 10.0 pounds of glue per ton of zinc deposited, respectively. The slope of the Tafel region of the polarization curves was found to be 0.045v and the second electron transfer the corresponding mechanism for zinc electrodeposition. The slope of the diffusion controlled region was found to vary between 0.15-0.20v depending primarily on the zinc ion concentration. Increasing slopes were obtained with decreasing zinc concentration. The effects of the various process conditions on the orientations and morphologies of the zinc deposits were also determined. The electrocrystallization process with and without glue additions is discussed"--Abstract, page iii.

Advisor(s)

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

Committee Member(s)

James, William Joseph
Johnson, James W., 1930-2002

Department(s)

Materials Science and Engineering

Degree Name

M.S. in Metallurgical Engineering

Sponsor(s)

St. Joe Minerals Corporation

Publisher

University of Missouri--Rolla

Publication Date

1971

Pagination

ix, 65 pages

Rights

© 1971 Kenneth Dale Gielow, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Subject Headings

Electrolytic reduction
Zinc
Sulfuric acid

Thesis Number

T 2658

Print OCLC #

6037832

Electronic OCLC #

879218508

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