Idiom
black oxide
Meaning
Any of several coatings for steels or copper; some are oxides (mainly iron(II,III) oxide), some are nitrites or nitrates, and some are selenides; all are black; the main purposes are the antireflective and cosmetic effects; the anticorrosion effects are small.
Meaning adapted from Wiktionary, available under CC BY-SA 4.0.
Examples
“The factory uses black oxide to coat the metal parts.”
“He applied a layer of black oxide to the steel screws to reduce glare and improve their appearance.”
“Engineers often specify a black oxide finish for precision components, prioritizing its antireflective properties over its limited ability to prevent long-term corrosion.”
Examples
simple
“The factory uses black oxide to coat the metal parts.”
contextual
“He applied a layer of black oxide to the steel screws to reduce glare and improve their appearance.”
complex
“Engineers often specify a black oxide finish for precision components, prioritizing its antireflective properties over its limited ability to prevent long-term corrosion.”
Key words
Related idioms
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