1. makes (a metal surface) chemically inactive or resistant to corrosion by forming a protective layer
Usage: chemistry; technical

Examples

• The chromium in stainless steel passivates the surface against rust.
• The manufacturer passivates the aluminum parts to prevent corrosion.
• Nitric acid treatment passivates the metal components.
• The coating passivates the steel surface in harsh environments.
• Heat treatment passivates the alloy by forming an oxide layer.
• The process passivates the surface within minutes of application.