Rust
Rust is composed of iron oxides. In colloquial usage, the term is applied to red oxides, formed by the reaction of iron and oxygen in the presence of water or air moisture. Other forms of rust exist, like the result of reactions between iron and chloride in an environment deprived of oxygen – rebar used in underwater concrete pillars is an example – which generates green rust. Several forms of rust are distinguishable visually and by spectroscopy, and form under different circumstances. Rust consists of hydrated iron(III) oxides Fe2O3·nH2O and iron(III) oxide-hydroxide FeO(OH)·Fe(OH)3.
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Famous quotes containing the word rust:
“How dull it is to pause, to make and end,
To rust unburnished, not to shine in use!
As though to breathe were life!”
—Alfred Tennyson (1809–1892)
“Never trust thine enemy: for like as iron rusteth, so is his wickedness. Though he humble himself and go crouching, yet take good heed and beware of him, and thou shalt be unto him as if thou hadst wiped a looking-glass, and thou shalt know that his rust hath not been altogether wiped away.”
—Apocrypha. Ecclesiasticus 12:10-11.
“The twentieth year is well-nigh past;
Since first our sky was overcast,
Ah would that this might be the last!
My Mary!
Thy spirits have a fainter flow,
I see thee daily weaker grow—
‘Twas my distress that brought thee low,
My Mary!
Thy needles, once a shining store,
For my sake restless heretofore,
Now rust disus’d, and shine no more,
My Mary!”
—William Cowper (1731–1800)