PASSIVATION Passivation is a process used to enhance the corrosion resistance of metals, particularly stainless steel and other alloys. The goal of passivation is to create a protective oxide layer on the metal surface, which helps prevent rust and corrosion. Here's how passivation works and why it's important: 1. Purpose of Passivation: The primary purpose of passivation is to remove free iron and other contaminants from the surface of stainless steel and promote the formation of a chromium-rich oxide layer. This oxide layer acts as a barrier, protecting the underlying metal from corrosion in various environments.