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:
-
- Golden, CO
- Issue Date:
- Research Org.:
- Midwest Research Institute, Kansas City, MO (United States)
- OSTI Identifier:
- 867556
- Patent Number(s):
- 4963012
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C03 - GLASS C03C - CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS
G - PHYSICS G02 - OPTICS G02B - OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
- 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}
}