Durable silver coating for mirrors

Patent · Sat Jan 01 00:00:00 EST 2000

OSTI ID:873051

Wolfe, Jesse D ^[1]; Thomas, Norman L ^[2]

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1. Discovery Bay, CA
2. Livermore, CA

A durable multilayer mirror includes reflective layers of aluminum and silver and has high reflectance over a broad spectral range from ultraviolet to visible to infrared. An adhesion layer of a nickel and/or chromium alloy or nitride is deposited on an aluminum surface, and a thin layer of silver is then deposited on the adhesion layer. The silver layer is protected by a passivation layer of a nickel and/or chromium alloy or nitride and by one or more durability layers made of metal oxides and typically a first layer of metal nitride. The durability layers may include a composite silicon aluminum nitride and an oxinitride transition layer to improve bonding between nitride and oxide layers.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• DOE Contract Number: W-7405-ENG-48
• Assignee: Regents of University of California (Oakland, CA)
• Patent Number(s): US 6078425
• OSTI ID: 873051
• Country of Publication: United States
• Language: English

Related Subjects

durable
silver
coating
mirrors
multilayer
mirror
reflective
layers
aluminum
reflectance
broad
spectral
range
ultraviolet
visible
infrared
adhesion
layer
nickel
chromium
alloy
nitride
deposited
surface
protected
passivation
durability
metal
oxides
typically
composite
silicon
oxinitride
transition
improve
bonding
oxide
passivation layer
oxide layers
adhesion layer
spectral range
transition layer
aluminum nitride
metal oxide
oxide layer
metal oxides
reflective layer
metal nitride
silver layer
multilayer mirror
chromium alloy
improve bonding
/359/427/