Passivation: Creating a Protective Film on Metal Surfaces

Passivation is a natural phenomenon that involves the formation of a protective "film" on the surface of certain metals. This film protects against corrosion by encapsulating the metal, shielding its "vulnerable" parts from corrosive agents.

Characteristics

For adequate protection, this coating must be dense and minimally porous to prevent the passage of corrosive agents and thin to enhance compactness. Additionally, it must be uniform to protect the entire surface of the material equally. Achieving the conditions necessary for natural passivation is challenging, which is why we intervene chemically to achieve in minutes what nature would take years to accomplish.

Metals We Treat

  • Stainless Steel
  • Nickel Alloys
  • Zirconium
  • Carbon Steel
  • Copper
  • Aluminum
  • Titanium
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Artificial Passivation

Artificial passivation involves the chemical formation of a protective passivating film. This process is crucial for protecting metal surfaces, especially after decontaminating processes like pickling and degreasing. Passivation can be performed by immersion or spraying, using solutions tailored to the specific alloy, complying with international standards.

Passivating Agents

For passivating treatments on stainless steel, aluminum, carbon steel, copper, nickel, zirconium, and titanium, Bama uses specific passivating substances appropriate for each material.

 

 

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