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:
“No great movement designed to change the world can bear to be laughed at or belittled. Mockery is a rust that corrodes all it touches.”
—Milan Kundera (b. 1929)
“Lay not up for yourselves treasures upon earth, where moth and rust doth corrupt, and where thieves break through and steal: but lay up for yourselves treasures in heaven, where neither moth nor rust doth corrupt, and where thieves do not break through nor steal: for where your treasure is, there will your heart be also.”
—Bible: New Testament Jesus, in Matthew, 6:19-21.
“Then we shall rust in shade, or shine in strife,
And fluctuate ‘twixt blind hopes and blind despairs,
And fancy that we put forth all our life,
And never know how with the soul it fares.”
—Matthew Arnold (1822–1888)