Black oxide

This article is about modern black oxide coatings. For traditional methods of forming black oxide, see Bluing (steel).
Screw with blackening

Black oxide or blackening is a conversion coating for ferrous materials, stainless steel, copper and copper based alloys, zinc, powdered metals, and silver solder.[1] It is used to add mild corrosion resistance, for appearance, and to minimize light reflection.[2] To achieve maximal corrosion resistance the black oxide must be impregnated with oil or wax.[3] Dual target magnetron sputtering (DMS) is used for preparing black oxide coatings.[4] One of its advantages over other coatings is its minimal buildup.[2]

  1. ^ Black Oxide for Non-Ferrous Metals, archived from the original on 2010-01-23, retrieved 2009-09-03
  2. ^ a b Oberg, Erik Oberg; E. Green, Robert (1996). Machinery's handbook : a reference book for the mechanical engineer, designer, manufacturing engineer, draftsman, toolmaker, and machinist (25th ed.). New York: Industrial Press. p. 1444. ISBN 9780831125752.
  3. ^ Oberg, Erik Oberg; E. Green, Robert (1996). Machinery's handbook : a reference book for the mechanical engineer, designer, manufacturing engineer, draftsman, toolmaker, and machinist (25th ed.). New York: Industrial Press. p. 1442. ISBN 9780831125752.
  4. ^ Green, Julissa. "The Forms of Sputtering Deposition". Sputter Targets. Retrieved Sep 15, 2024.