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ALLOY

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AlloysAn alloy is a mixture with metallic properties

that contains at least one metal element.

This mixture can change the properties of

pure metal.

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Pure MetalEasy to shape (malleable)

Easy to bent (ductile)

BecauseThe arrangement of atom!t consists of the same si"e atom.#o easy to slide down each other

Force

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Pure MetalEasy to shape (malleable)

Easy to bent (ductile)

BecauseThe arrangement of atom!t consists of the same si"e atom.#o easy to slide down each other

Force

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AnalogyPure metal

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Alloy More strength

$ard to ductile

$ard to malleable Because%

$a&e another metal atom in thearrangement of atom.

This another atom disturb thearrangement

#o hard to slide down each other.

Force

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AnalogyAlloy

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Examples

Brass

Bronze

Pewter

Stainless steel

Duralumin

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Brass Copper !" and #in$ %!"

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Bron#eCopper &!" and tin '!"

http://en.wikipedia.org/wiki/Image:Brass.jpg

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(tainless steel)ron && " and $ar*on '"

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+uraluminAluminium &,.," - $opper " andmagnesium !.,"

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Pe/terTin &'"- antimony " and $opper0"

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Aims of making alloys

Avoid thecorrosion

Improve the

aspect

Add the strength

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A1oid the $orrosion

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Add the strength

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)mpro1e the aspe$t.

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. Alloy is more hard than pure metal because

A. The bonding between atom metal is hard.

B. The slide down between the atom layer is

less

*. The arrangement of atom is more regular

-. The atom was separately each other

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/. or the following attribute which is not thead&antages of alloy

A. More strength

B. A&oid the corrosion

*. $a&e more density

-. !mpro&e the aspect

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0. 1hat is the different element betweeniron with it alloy stainless steel

A. !ron can a&oid the corrosion

B. !ron is more ductile

*. !ron is more strength

-. !ron can detain the heat

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Con$lusion

2Example of alloy

2Arrangement of atom.

2Meaning of alloy

2 Aims of ma,ing alloys.