Doctoral Dissertations

Hyun Soo Park

Abstract

"The chemical corrosion of chemically, vacuum and sputter deposited Ag films on an aluminoborosilicate and a soda lime glass was investigated in wet HCl and saturated water vapor as a function of concentration, temperature and time. The higher corrosion resistance of chemically deposited Ag films in comparison to evaporated or sputtered Ag films is attributed to their lower microvoid density and higher adhesion strength. Ag films on the more chemically durable aluminoborosilicate glass had a higher corrosion resistance. Furthermore, films which received a moderate thermal annealing (80 to 140° C) or were deposited on a glass surface washed with HN03 acid or covered with Ni had improved chemical durability. Chemical reactions during exposure occurred at the air/metal surface and the Ag-glass interface. In most cases, the greatest corrosion occurred locally at the unprotected edge, which may be due to the easy penetration of the corrosive media. The reaction products formed in wet HCl vapor are AgCl, NiC12, CuCl and Cu2O, while those in saturated water vapor were Ag2O, NiO, Cu2O and oxalates. The corrosion of open Ag films in saturated water vapor was due to Ag-agglomeration, Ag-alkali interdiffusion and glass hydration"--Abstract, p. iii

Advisor(s)

Delbert E. Day

Committee Member(s)

Charles A. Sorrell
Robert E. Moore, 1930-2003
William Joseph James
Edward Boyd Hale

Department(s)

Materials Science and Engineering

Degree Name

Ph. D. in Ceramic Engineering

Publisher

University of Missouri--Rolla

Publication Date

Fall 1982

Journal article titles appearing in thesis/dissertation

  • Corrosion of chemically and vacuum deposited Ag films on glass by wet HCl Vapor
  • Corrosion of Open Ag, Ni/Ag and Cu/Ag films on glass by HCl and saturated water vapor
  • Corrosion of sputtered and evaporated Ag films on glass by saturated water vapor

Pagination

xv, 130 pages

Note about bibliography

Includes bibliographical references (pages 114-118)

Rights

© 1982 Hyun Soo Park, All rights reserved.

Document Type

Dissertation - Open Access

File Type

text

Language

English

Thesis Number

T 4835

Print OCLC #

9848884

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