Post by williamplayer on Jan 7, 2014 12:30:36 GMT
For First Time Graphene and Metal Make Super Strong Composite
One of the characteristics of graphene that is often mentioned but seldom exploited is its strength compared to other materials. Its tensile strength has been measured at 130 GigaPascals, making it 200 times as strong as steel.
Now researchers at the Korean Advanced Institute of Science and Technology (KAIST) have put graphene’s tensile strength to work by using it in a composite consisting of copper and nickel. The graphene makes the copper 500 times as strong as it would be on its own and the nickel 180 times as strong.
This work is a significant breakthrough, since previous attempts to use graphene in a metal composite have not resulted in increased strength in the doped material. In the KAIST research, which was published in the journal Nature Communications ("Strengthening effect of single-atomic-layer graphene in metal–graphene nanolayered composites"), chemical vapor deposition (CVD) was used to grow a single layer of graphene on a metallic deposited substrate, and then another metal layer was deposited. These steps were repeated, resulting in a multilayer metal-graphene composite material.
Read Full Article: spectrum.ieee.org/nanoclast/semiconductors/nanotechnology/for-first-time-graphene-and-metal-make-strong-composite
One of the characteristics of graphene that is often mentioned but seldom exploited is its strength compared to other materials. Its tensile strength has been measured at 130 GigaPascals, making it 200 times as strong as steel.
Now researchers at the Korean Advanced Institute of Science and Technology (KAIST) have put graphene’s tensile strength to work by using it in a composite consisting of copper and nickel. The graphene makes the copper 500 times as strong as it would be on its own and the nickel 180 times as strong.
This work is a significant breakthrough, since previous attempts to use graphene in a metal composite have not resulted in increased strength in the doped material. In the KAIST research, which was published in the journal Nature Communications ("Strengthening effect of single-atomic-layer graphene in metal–graphene nanolayered composites"), chemical vapor deposition (CVD) was used to grow a single layer of graphene on a metallic deposited substrate, and then another metal layer was deposited. These steps were repeated, resulting in a multilayer metal-graphene composite material.
Read Full Article: spectrum.ieee.org/nanoclast/semiconductors/nanotechnology/for-first-time-graphene-and-metal-make-strong-composite