Post by williamplayer on Jan 7, 2014 12:41:54 GMT
Researchers Use Graphene To Develop Ultra-Strong Nano-composite
A new nanocomposite material has been developed exhibiting hundreds of times greater strength than pure metals. Professor Seung Min Han and Yoo Sung Jeong (Graduate School of Energy, Environment, Water, and Sustainability (EEWS)) and Professor Seok Woo Jeon (Department of Material Science and Engineering) have developed a composite nanomaterial.
The nanomaterial consists of graphene inserted in copper and nickel and exhibits strengths 500 times and 180 times, respectively, greater than that of pure metals. The result of the research effort was published in Nature Communications. Graphene displays strengths 200 times greater than that of steel, is stretchable, and is flexible.
The U.S. Army Armaments Research, Development and Engineering Center developed a graphene-metal nanomaterial but failed to drastically improve the strength of the material.
To maximize the increase in strength imparted by the addition of graphene, the KAIST research team created a layered structure of metal and graphene. Using CVD (chemical vapor deposition) the team grew a single layer of graphene on a metal deposited substrate then deposited another metal layer and repeated the process to produce a metal-graphene multilayer composite material that, achieving a world first in doing so, utilized single layer of graphene. Micro-compression tests within transmission electronic microscope and molecular dynamics simulation effectively showed the strength enhancing effect and the dislocation movement on an atomic level.
Read Full Article: www.rdmag.com/news/2013/08/researchers-use-graphene-develop-ultra-strong-nanocomposite
A new nanocomposite material has been developed exhibiting hundreds of times greater strength than pure metals. Professor Seung Min Han and Yoo Sung Jeong (Graduate School of Energy, Environment, Water, and Sustainability (EEWS)) and Professor Seok Woo Jeon (Department of Material Science and Engineering) have developed a composite nanomaterial.
The nanomaterial consists of graphene inserted in copper and nickel and exhibits strengths 500 times and 180 times, respectively, greater than that of pure metals. The result of the research effort was published in Nature Communications. Graphene displays strengths 200 times greater than that of steel, is stretchable, and is flexible.
The U.S. Army Armaments Research, Development and Engineering Center developed a graphene-metal nanomaterial but failed to drastically improve the strength of the material.
To maximize the increase in strength imparted by the addition of graphene, the KAIST research team created a layered structure of metal and graphene. Using CVD (chemical vapor deposition) the team grew a single layer of graphene on a metal deposited substrate then deposited another metal layer and repeated the process to produce a metal-graphene multilayer composite material that, achieving a world first in doing so, utilized single layer of graphene. Micro-compression tests within transmission electronic microscope and molecular dynamics simulation effectively showed the strength enhancing effect and the dislocation movement on an atomic level.
Read Full Article: www.rdmag.com/news/2013/08/researchers-use-graphene-develop-ultra-strong-nanocomposite