electroless

/ɪˈlɛktroʊləs/
adjective
  1. Describing a plating process that deposits metal onto a surface using a chemical reaction rather than an electric current.
    • The factory switched to an electroless process to coat the circuit boards evenly.
    • Electroless deposition can create a very uniform layer on complex shapes.
    • Electroless nickel plating is often used to protect metal parts from corrosion.