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Topics Covered
OverviewnSILVER -
Anti-Tarnish Coating for Silver Jewelry and Coins Proven
Performance of nSILVER Appearance of nSILVER-Coated
Articles
Overview
Beneq Oy, based in Finland, is a supplier of equipment and coating technology for global markets. Beneq turns innovations into success by developing applications and equipment for cleantech and renewable energy fields, especially in glass, solar and emerging thin film markets. Coating applications include optics, barriers and passivation layers, as well as energy generation and conservation. Beneq also offers complete coating services. Beneq's coating applications are based on two enabling nanotechnology platforms: Atomic Layer Deposition (ALD) and aerosol coating (nHALO® and nAERO®).
nSILVER - Anti-Tarnish Coating for Silver Jewelry and
Coins
Tarnishing is a well-known phenomenon in the silver industry. Tarnishing is
mainly caused by airborne sulfur, which reacts with the surface of silver and
produces black silver sulfide (Ag2S). nSILVER®, a
unique coating process developed by Beneq, is a
fundamental solution for the protection of silver against tarnishing. For nSILVER, Beneq now
provides turnkey solutions for industrial scale production, e.g., the TFS 500
Thin Film System for ALD coating.
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nSILVER Anti-Tarnish Coating
The invisible nSILVER anti-tarnish property is based on coating silver with
a fully transparent, conformal two-component thin film. The dual layer structure
of nSILVER consists of two ceramic materials: aluminum oxide
(Al2O3) and titanium dioxide (TiO2). While the
bottom layer acts as a bonding layer with good adherence to the silver, the top
layer acts as a barrier layer through which liquids and other aggressive
chemicals cannot penetrate.
Proven Performance of nSILVER
nSILVER has been subjected to numerous industrially
acknowledged anti-tarnish tests, and the results have been overwhelmingly
impressive. nSILVER has proven its superior performance in the following
tests:
- Salt spray test (DIN 50021 SS)
- Kesternich test (DIN 50018 KFW 0,2S)
- Sweat, seawater and perfume resistance tests
- Dilution resistance (alcohols and ketones)
- Climate test (DIN 58390-12-120, sharpness grade 7)
- UV exposure test (Sol 2)
- Commercial washing machine test
- Chemical dry-cleaning test
Appearance of nSILVER-Coated Articles
The dual nSILVER coating is optimized to be completely transparent on
silver. However, the coating factually enhances the reflectivity of the surface,
which gives an nSILVER coated article a brighter and more glossy appearance
than silver itself.
Source: Beneq
For more information on this source please visit Beneq