Bower-Barff process

Client: rupertharris

Location: Glossary

A method of producing a thin, hard, black layer of magnetite (Fe304) on architectural iron by hydrogen reduction of the iron in a chamber, using super heated steam at temperatures between 260C to 650C. The method was patented by Englishman Frederick Settle Barff in 1876 and developed further in collaboration with George Bower into a commercially viable process. By 1882 Bower brought out Barffs patents.