|About this Abstract
||Materials Science & Technology 2012
||Nanomaterials and Nanodevices
||Overview of Nanocarbon (“Covetic”) Metals
||David R Forrest, Lourdes Salamanca-Riba, Lloyd Brown, Peter Joyce, Azzam N Mansour, Iwona Jasiuk, Adam R Hall
|On-Site Speaker (Planned)
||David R Forrest
Recent advances in nanomanufacturing have made it possible for large amounts (> 6 wt.%) of nanocarbon to be retained as a second phase in different metals including aluminum and copper. The carbon is highly stable, even in the melt. These nanomaterials are commercially significant because the pyrometallurgical process is scalable to tonnage quantities, converting relatively inexpensive powder to nanocarbon. These nanomaterials, termed “covetic” by their inventors at Third Millennium Metals LLC, display some highly unusual characteristics that are not well-understood:<UL><LI>The nanocarbon is detectable by XPS and EDS but not by analytic methods such as LECO and GDMS<LI>Nanocarbon raises the melting point and alters surface tension<LI>Thermal conductivity is enhanced in the working direction, and reduced in the transverse direction<LI>Electrical conductivity is increased in aluminum</UL>This presentation provides an overview of our knowledge about the metallurgy of copper and aluminum covetic nanomaterials.