The process of heat-treating steel or iron with chromium to create a hard, corrosion-resistant surface layer.
From 'chromize' (to treat with chromium at high temperature) plus '-ing'. This metallurgical technique emerged in the 20th century for industrial applications.
Chromizing is like giving steel a suit of armor by heating it with chromium vapor—the chromium atoms diffuse into the metal's surface, creating something twice as hard and able to withstand extreme heat that would ruin normal steel!
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