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Black oxide

 Home Physics Subfields of physics Applied and interdisciplinary physics Physical chemistry Chemical mixtures
 0 By others on same topic  0 Discussions  1970-01-01  See my version
Black oxide is a conversion coating used to provide corrosion resistance and a decorative finish to metal surfaces, primarily steel and iron. The process involves oxidizing the metal surface to produce a layer of magnetite (Fe₃O₄), which gives the metal a distinctive dark, black appearance.

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