Steel
Fretting damage in steel can be identified by the presence of a pitted surface and fine 'red' iron oxide dust reminiscent of cocoa powder. Strictly this debris is not 'rust' as its production requires no water. The particles are much harder than the steel surfaces in contact, so abrasive wear is inevitable; however, particulates are not required to initiate fret.
Read more about this topic: Fretting
Famous quotes containing the word steel:
“O God of battles, steel my soldiers’ hearts.
Possess them not with fear. Take from them now
The sense of reckoning, ere th’ opposed numbers
Pluck their hearts from them.”
—William Shakespeare (1564–1616)
“Cold eyes ... steel grey, rather small, not unpleasant in good-humour, diabolic in a passion, but worst when a little suspicious; then they watch you as though you were a young rattle-snake, to be killed when convenient.”
—Henry Brooks Adams (1838–1918)
“The complaint ... about modern steel furniture, modern glass houses, modern red bars and modern streamlined trains and cars is that all these objets modernes, while adequate and amusing in themselves, tend to make the people who use them look dated. It is an honest criticism. The human race has done nothing much about changing its own appearance to conform to the form and texture of its appurtenances.”
—E.B. (Elwyn Brooks)