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Figure 307

Diagram showing the various factors involved in patina formation.

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LAYERED PATINA
Combinations/interactions/aging

  • CHEMICAL ALTERATION OF METAL
    • Natural corrosion
      • Atmospheric pollutants (indoor/outdoor)
      • Burial (terrestrial or marine)
      • Cleaning
      • Handling (sebum)
      • Bimetallic/ galvanic
      • Other
    • Intentional chemical patina
      • Hot chemical patina
      • Cold chemical patina
      • Atmospheric pollutants (indoor/outdoor)
      • Burial (terrestrial or marine)
      • Other
  • COATING
    • Intentional coating
      • Lacquer
      • Paint
      • Resin
      • Varnish
      • Wax
      • Other
    • Deposits/residues accretions
      • Core/investment
      • Dust
      • Oil
      • Soot
      • Wax
      • Burial accretion
      • Other