1. Metal Forms (cellular metals)
Material Science
Metal Forms
(cellular metals)
Kim min su
Cho hyun soo
Oh eun bin 1

2. Imagies
(Closed cell type) (Open cell type)

3. Production proceed Proceed of Closed cell Melting Thickening Foaming
Melt Al 6061 at 700℃
Thickening
Temp. 670℃ Ca-10Al, 1.5wt% strring(600rpm), 15min
Foaming
Temp. 680℃ TiH2 2wt%, strring(1000rpm), 10sec
Holding
Holding time : 60 s
Cooling
Air cooling

4. Production proceed Proceed of open cell Ball Melting Al Cooling
Put ting ball in mold
Melting Al
Temp. 670℃ Ca-10Al, 1.5wt% strring(600rpm), 15min
Cooling
Air cooling
Disolving
Disolve the ball by water

5. Properties

6. Properties Properties Al Al metal forms Density 2.7g/㎤ 0.2~0.4g/㎤
Heat conductivity
167W/m-k
2~4W/m-k
Specific Strength
Low
Very Low
Heat resistance
High
Energy absortion rate
(Impact · Sound · Vibrate energy)

7. Application Application Low density High energy absorption Car bumper
building timber
Elevator
Soundproof
walls
Application
Aerospace

8. Development in G.N.U.
In 2002, Professor Heo bo-young's team in GNU and the Korea Resources Corporation have developed a device which is made of metal sponge to reduce the impact of crush in car accidents using aluminum cans.
– Dong-A Daily news,

9. Thanks for attention