Bluing

Rarity: Uncommon

A topic a little better known than average, read and translated beyond its own country.

Rarity follows how well known the article is: its views on the French and English Wikipedia over a year, and the number of languages it exists in.

At a glance

Class

Notion

Domain

Science and technology

In collections

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What Wikipedia says

Bluing, sometimes spelled as blueing, is a passivation process in which steel is partially protected against rust using a black oxide coating. It is named after the blue-black appearance of the resulting protective finish.

Excerpt from the Wikipedia article “Bluing (steel)”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Clément Eustache, CC BY-SA 4.0, via Wikimedia Commons.