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Material Science HW2Material Science HW2

Glass(Glass( 유리유리 ))

2009012176

박성규Mechanical Engineering

GNU

© GNU Su-Jin Kim© GNU Su-Jin Kim

Atomic BondingAtomic BondingMaterial ScienceMaterial Science

Glass ▶The most common raw materials of glass is silica sand. (Sio2) ▶Na2Co3( 소다회 ), CaCo3 ( 석회석 )…. ▶Transparent( 투명성 ) and beautiful. ▶ Transparency, durability, not harmful to people ▶ Supercooled liquid( 과냉각액체 ) state

Sio2

Transparent and beautiful

© GNU Su-Jin Kim© GNU Su-Jin Kim

Atomic BondingAtomic BondingMaterial ScienceMaterial Science

Products

Common glass Tempered glass• Lead oxide glass

In addition, More than 100 kinds of glass is used in the real life.

© GNU Su-Jin Kim© GNU Su-Jin Kim

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Merits & Disadvantages

Merits• Transparency• Good light, heat transmittance.( 열

투과율 )• Workability( 가공성 ) is good• Insulating effect( 보온 효과 )• Easy to recycle.

• Finally, the glass is

Disadvantages• brittle.( 깨지기 쉽다 ) • Passes a bad light.• Expensive

an indispensable raw material to us.

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THANKS FOR LISTENING TO MY PRESENTATION.