Advanced protection against environmental degradation of silver mirror stacks for space application

  title={Advanced protection against environmental degradation of silver mirror stacks for space application},
  author={Rajendra Kurapati and Vincent Maurice and Antoine Seyeux and Lorena H. Klein and Dimitri Mercier and Gr{\'e}gory Chauveau and C. Gr{\`e}zes-besset and Loic Berthod and Philippe Marcus},
  journal={Journal of Materials Science \& Technology},
2 Citations

The Incorporation of Amplified Metal-Enhanced Fluorescence in a CMOS-Based Biosensor Increased the Detection Sensitivity of a DNA Marker of the Pathogenic Fungus Colletotrichum gloeosporioides

It was found that MEF can be amplified by a customized silver-deposition procedure that results in increased detection sensitivity, and may allow the detection of the pathogenic fungus in postharvest produce and determine its pathogenicity state.

Electron microscopy studies of contaminated telescope mirror samples exposed at Paranal

Telescope mirrors typically consist of glass-ceramic substrates coated with a thin layer of aluminum or protected silver. Airborne contaminants on such surfaces can significantly degrade their



Environmental durability of protected silver mirrors prepared by plasma beam sputtering.

Mixed flowing gas exposure was used to investigate the corrosion behavior of plasma beam sputtered silver mirrors with different adhesion layer materials, and lateral transport of silver was found to be an important factor in the corrosion process.

Local Degradation Mechanisms by Tarnishing of Protected Silver Mirror Layers Studied by Combined Surface Analysis.

Local initiation and propagation of tarnishing were studied by combined surface and interface analysis on model stack samples consisting of thin silver layers supported on lightweight SiC substrates and protected by thin SiO2 overcoats, submitted to accelerated aging in gaseous H2S.

Corrosion characterization of durable silver coatings by electrochemical impedance spectroscopy and accelerated environmental testing.

The results suggested that the 100A thick SiNx coating produced by rf magnetron sputtering was porous and acted as a leaky capacitor on the Ag film, whereas the addition of a NiCrNx interlayer as thin as 3A betweenSiNx and Ag films resulted in a much denser SiNX coating with a low-frequency impedance value of 2 orders of magnitude higher than that without the interlayer.

Development of silver coating options for the Gemini 8-m telescopes project

Acting as a prime contractor to the Gemini Project, the Optical Data Associates (ODA), with its major subcontractors, BOC Coating Technologies (BOCCT) and Deposition Sciences, Inc. (DSI), developed

Reflectivity, polarization properties, and durability of metallic mirror coatings for the European Solar Telescope

In the context of the conceptual design study for the European Solar Telescope (EST) we have investigated different metallic mirror coatings in terms of reflectivity, polarization properties and

Optical Properties and Corrosion Resistance of Durable Silver Coatings

There is a need in the optics community for highly reflective mirrors that do not degrade in harsh environments. While silver can be a highly efficient reflector of visible light, it suffers from

Effect of atmospheric exposure on the infrared reflectance of silvered mirrors with and without protective coatings.

Compared the reflectances of freshly prepared silver mirrors with and without a protective overcoat, the mirrors were aged in room air, dry nitrogen, and moist 10% H(2)S in air and their reflectances remeasured periodically over extended periods in the 1-2 0-micro wavelength range.

UV-shifted durable silver coating for astronomical mirrors

Silver has the highest reflectance of all of the materials, but it tarnishes in the presence of sulfides, chlorides, and oxides in the atmosphere. Also, the silver reflectance is very low at