Deposition of chromium oxides from a trivalent chromium solution

摘要

A water-soluble composition of matter free of an added buffering agent, for electrolytically depositing a chromium oxide coating on a metal substrate is disclosed comprising a mixture of a trivalent chromium compound, a weak chelating agent, an optional conductivity enhancing cation, an optional depolarizer, and an optional surfactant. A process is also described as well as a product obtained by the process.