Passivation occurs naturally in some materials, which is why Stainless Steel doesn’t rust. A passive layer is merely a thin coating of the oxide of the base material. This layer forms over time through contact with air. A passive layer can also be grown purposefully by immersion in oxidizing chemicals. The process of passivation is mainly used for cleaning and descaling. Fotofab offers passivation per MIL-S-5002.
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