Title

Corrosion of Evaporated Ag Films on Glass by Saturated Water Vapor

Abstract

The corrosion of evaporated Ag films on an aluminoborosilicate and a soda lime glass in saturated water vapor and ambient air was studied as a function of thermal annealing, and glass surface treatment and composition. Water vapor caused more rapid corrosion of the Ag films than ambient air. Thermal annealing between 80 and 140°C improved the corrosion resistance of the Ag films. An alkali depleted soda lime glass surface and the aluminoborosilicate glass resulted in more corrosion resistant Ag films. Alkali ions on the glass surface accelerated the corrosion of the Ag films, forming Ag2O. The corrosion of Ag films is attributed to Ag agglomeration, Ag-alkali interdiffusion, and glass hydration.

Department(s)

Materials Science and Engineering

Keywords and Phrases

Glass; Heat Treatment - Annealing; Mirrors - Corrosion; Silver And Alloys; Alkali Ions; Aluminoborosilicate Glass; Interdiffusion; Soda Lime Glass; Water Vapor; Solar Radiation

International Standard Serial Number (ISSN)

1651633

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1986 Elsevier BV, All rights reserved.

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