Research in CELCORR

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High performance gold free electrical contacts for hearing aids

Present day low power electrical contacts systems are based on the heavy use of costly gold coatings. The multi-layered contact systems are typically made on a substrate with a layer of Nickel followed by a layer of Gold with thickness depending on the application and exposure conditions. Main issues with the reliability of electrical contacts are the corrosion and wear, which limits the freedom to reduce the gold layer thickness. The goal of the HIPEC project is to develop electrical contact systems without the use of gold, while providing good corrosion and tribological performance.