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Chromium
Part 1 of Paper
.... not rust easily and becomes shiny and
bright when it is polished. The shiny trim on our automobile bumpers and door
handles is usually electroplated .
Most chromium comes from something called chromite which is a mixture
of chromium , iron, and oxygen. Chromite is a common rather ordinary black
mineral tha.... Part 2 of Paper
.... Nickel is highly resistant to electric current and is often added to
chromium steels to make them easier to work. For example, stainless steel
sinks can be pressed out from flat sheets of steel that can contain 18 percent
chomium and 8 percent nickel.
When nickel is mixed with chromium, the resulting metal can stand
very high temperatures without corroding. For example, the heating elements of
toasters can be made from an alloy that is 80 percent nickel and 20 percent
chromium.... |
| Number of words: 483 - Approximate pages: 2 |
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