skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Passivation coating for flexible substrate 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 before 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. Also, the silver or other reflective metal layer on mirrors comprising thin, lightweight, flexible substrates of metal or polymer sheets coated with glassy layers can be protected with silicon nitride according to this invention.

Inventors:
 [1];  [1]
  1. (Golden, CO)
Publication Date:
Research Org.:
MIDWEST RESEARCH INSTITUTE
OSTI Identifier:
867556
Patent Number(s):
US 4963012
Assignee:
United States of America as represented by United States (Washington, DC) NREL
DOE Contract Number:  
AC02-83CH10093
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
passivation; coating; flexible; substrate; mirrors; protective; diffusion; barrier; metalized; mirror; structures; provided; layer; silicon; nitride; dense; transparent; dielectric; material; impervious; water; alkali; impurities; corrosive; substances; typically; attack; metal; layers; degradation; reflectivity; deposited; deposition; thereon; stabilize; interface; encapsulate; protect; corrosion; coated; according; front; surface; silver; reflective; comprising; lightweight; substrates; polymer; sheets; glassy; protected; reflective metal; flexible substrate; diffusion barrier; metal layers; metal layer; silicon nitride; front surface; dielectric material; metal deposition; protective diffusion; substrate interface; typically attack; passivation coating; nitride layer; mirror structures; metal deposit; metalized mirror; mirror structure; deposition thereon; corrosive substances; surface mirrors; /359/

Citation Formats

Tracy, C. Edwin, and Benson, David K.. Passivation coating for flexible substrate mirrors. United States: N. p., 1990. Web.
Tracy, C. Edwin, & Benson, David K.. Passivation coating for flexible substrate mirrors. United States.
Tracy, C. Edwin, and Benson, David K.. Mon . "Passivation coating for flexible substrate mirrors". United States. https://www.osti.gov/servlets/purl/867556.
@article{osti_867556,
title = {Passivation coating for flexible substrate mirrors},
author = {Tracy, C. Edwin and Benson, David 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 before 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. Also, the silver or other reflective metal layer on mirrors comprising thin, lightweight, flexible substrates of metal or polymer sheets coated with glassy layers can be protected with silicon nitride according to this invention.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 1990},
month = {Mon Jan 01 00:00:00 EST 1990}
}

Patent:

Save / Share: