nSILVER® Anti-tarnish Coating
Does your jewelry tarnish before it reaches the retailer? We have the solution.
Tarnishing is a long–established challenge in the silver industry. Oxidation, sulfidation and corrosion cause discoloration of the silver surface, which decrease the shelf-life of silver products and collector items.
nSILVER, is an industrial-scale turnkey production solution for the protection of silver against tarnishing. It consists of optimized anti-tarnish production equipment and a unique coating process developed and patented by Beneq.
Benefits of nSILVER:
- Significant tarnish resistance improvement
- Safe coating materials
- Low cost of operating
- High capacity
- Good fit to existing manufacturing processes and logistics
- Proven and robust technology
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.
nSILVER is based on atomic layer deposition (ALD), a coating technology that enables growing of thin films on articles of any shape and orientation. It provides an ultrathin and totally conformal anti-tarnish coating, which is fully transparent on silver. The coating is pinhole-free and extremely uniform over the entire batch of coated articles.
Eliminating the white spots
The protective properties of nSILVER, besides preventing tarnishing, also impede the formation of white spots, which are material surface flaws characteristic of silver coins.
Protection of gold and copper
In addition to nSILVER, which was originally developed and optimized for anti-tarnish protection of silver, Beneq has also developed special coatings to protect copper and gold. All metals (silver, copper and gold) can be coated with the same equipment with special coating stacks, which have been optimized for each metal. nSILVER can also be used to protect multi-metal articles, coins with jewels, painted mints and other more complex collector items.
Beneq nSILVER in the jewelry industry
Beneq nSILVER is used on an industrial scale by the follwing companies:
|Kalevala Jewelry (FI)||Marcel Robbez Masson (FR)||Ronda High-Tech (IT)|
|Jewelry manufacturer||Jewelry manufacturer||Job coater|
Encapsulation of OLED microdisplaysBeneq developed a thin-film encapsulation nanolaminate coating for a leading Asian OLED microdisplay manufacturer to enable long lifetime for their microdisplays.
Insulator for thin film electroluminescent displaysAn ALD nanolaminate film was developed for Lumineq displays to create a fully pin-hole free thin film insulator layer.
Top electrode for transparent displayBeneq developed an ALD Transparent Conductive Oxide (TCO) for Lumineq's electroluminescent displays to replace the sputtered IDO that was used in the transparent top electrode.
Moisture protection of PCBsBeneq developed a low-temperature ALD moisture barrier solution for a leading supplier of electronics for personal safety monitoring to protect the sensitive circuit board components from moisture.
Encapsulation of phosphor powderBeneq provided a moisture barrier solution using ALD for FBR (fluidized-bed reactor) for a leading phosphor material manufacturer to protect the sensitive phosphor powders used in LED lighting from moisture.
Anti-corrosion coating for LED packagingBeneq's ALD coating solution solved a leading LED manufacturer's silver reflector corrosion problem by both applying ALD to coat the semi-finished wire-bonded LED assemblies, and by protecting the silver surface with nSilver.
Anti-reflection coating for solar glassBeneq and DSM created a production scale solution using DSM AR coating material and Beneq nFOG aerosol technology for a leading solar glass manufacturer to reduce light reflection on solar panels.
Metal-like coatings for watch partsBeneq developed a thin ALD-based optical coating for a leading watch parts manufacturer to both provide a specific color and to protect from corrosion.
Wafer-level moisture barrier for LEDBeneq provided moisture coating using TFS 200 for a leading LED manufacturer to protect LED dies from moisture and prevent oxidation.
Bottom DBR for LEDBeneq developed a multi-layer DBR structure on a patterned surface for a leading LED manufacturer.
Filling of diffractive gratingsBeneq used ALD coating to fill diffractive gratings for a leading optical system manufacturer to keep the gratings free from debris and boost their optical performance.
Anti-corrosion coating for sensorsThe highly conformal and pin-hole free ALD coating solved a leading sensor manufacturer's sensor corrosion problems without compromising sensor sensitivity.
Buffer layer for CIGS solar panelBeneq developed a thin, cadmium-free ALD buffer for the solar panels of a leading CGIS solar panel manufacturer.
Diffusion barrier for Li-ion batteriesBeneq's ultra-thin ALD coating solved a leading Li-ion battery manufacturer's battery corrosion challenges by reducing the fading of battery capacity caused by repeated charge and unload cycles.
Anti-tarnishing coating for jewelryBeneq helped Kalevala Jewelry in preventing the discoloration of silver surfaces by providing the patented nSilver industrial-scale protection solution for an ultra-thin, totally conformal, and fully transparent anti-tarnish coating.
Optical NIR filter on a glass cylinderBeneq developed a customized batch ALD process for a CCD sensor -based industrial vision systems supplier to coat their near-infrared (NIR) filters.
Optical coatings for lenses in high power lasersBenq developed a conformal high- and low-index multilayer optical coating for a leading provider of high power laser optics and coatings using the TFS 500 batch ALD system.
Coating of Microchannel Plates (MCP)Beneq developed an ALD coating solution for microchannel plates (MCP) for Incom, Inc., the world’s largest supplier of rigid fused fiber optics, to allow for significantly greater secondary electron emission .
Thin-film encapsulation of OLED lightingBeneq developed a conformal, dense, and pinhole-free Al2O3 and TiO2 barrier coating for a leading OLED lighting panel manufacturer to protect OLED panels from humidity.
Thin-film encapsulation of scintillator plates for X-ray imagingBeneq developed a conformal, dense, and pinhole-free low temperature Al2O3 and TiO2 barrier coating for a leading scintillator plate manufacturer to protect scintillator materials from moisture and increase product lifetime and reliability.