Coins TRIZ Cases
- Nickel-Doped Copper Coin Blank for Tarnish Resistance
Galvanic nickel doping in the copper layer prevents patina formation, ensuring long-term brightness and color consistency.
- Coinage Cladding Alloy Composition for Vending Machine Compatibility
A coinage cladding alloy with nickel, zinc, and manganese achieves specific electrical conductivity through thermal processing.