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Title: Silicon nitride protective coatings for silvered glass mirrors

Abstract

A protective diffusion barrier for metalized mirror structures is provided by a layer or coating of silicon nitride which is a very dense, transparent, dielectric material that is impervious to water, alkali, and other impurities and corrosive substances that typically attack the metal layers of mirrors and cause degradation of the mirrors' reflectivity. The silicon nitride layer can be deposited on the substrate prior to metal deposition thereon to stabilize the metal/substrate interface, and it can be deposited over the metal to encapsulate it and protect the metal from corrosion or other degradation. Mirrors coated with silicon nitride according to this invention can also be used as front surface mirrors.

Inventors:
;
Issue Date:
OSTI Identifier:
5844315
Application Number:
ON: DE85011637
Assignee:
Dept. of Energy
DOE Contract Number:  
AC02-83CH10093
Resource Type:
Patent
Resource Relation:
Other Information: Portions of this document are illegible in microfiche products
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; MIRRORS; PROTECTIVE COATINGS; DEPOSITION; DIFFUSION BARRIERS; SILICON NITRIDES; COATINGS; NITRIDES; NITROGEN COMPOUNDS; PNICTIDES; SILICON COMPOUNDS; 141000* - Solar Collectors & Concentrators

Citation Formats

Tracy, C E, and Benson, D K. Silicon nitride protective coatings for silvered glass mirrors. United States: N. p., 1984. Web.
Tracy, C E, & Benson, D K. Silicon nitride protective coatings for silvered glass mirrors. United States.
Tracy, C E, and Benson, D K. Fri . "Silicon nitride protective coatings for silvered glass mirrors". United States.
@article{osti_5844315,
title = {Silicon nitride protective coatings for silvered glass mirrors},
author = {Tracy, C E and Benson, D K},
abstractNote = {A protective diffusion barrier for metalized mirror structures is provided by a layer or coating of silicon nitride which is a very dense, transparent, dielectric material that is impervious to water, alkali, and other impurities and corrosive substances that typically attack the metal layers of mirrors and cause degradation of the mirrors' reflectivity. The silicon nitride layer can be deposited on the substrate prior to metal deposition thereon to stabilize the metal/substrate interface, and it can be deposited over the metal to encapsulate it and protect the metal from corrosion or other degradation. Mirrors coated with silicon nitride according to this invention can also be used as front surface mirrors.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1984},
month = {7}
}