Documents in the NTIS Technical Reports collection are the results of federally funded research. They are directly submitted to or collected by NTIS from Federal agencies for permanent accessibility to industry, academia and the public.  Before purchasing from NTIS, you may want to check for free access from (1) the issuing organization's website; (2) the U.S. Government Printing Office's Federal Digital System website; (3) the federal government Internet portal; or (4) a web search conducted using a commercial search engine such as
Accession Number ADA564274
Title New Type of Carbon Nanostructure Formed Within a Metal-Matrix.
Publication Date Jun 2012
Media Count 5p
Personal Author A. Hall A. N. Mansour D. R. Forrest L. Salamanca-Riba R. Isaacs
Abstract Recent advances in nanomanufacturing have made it possible for large amounts (> 6 wt.%) of carbon to be incorporated as nanoscale carbon during a reaction process in molten aluminum, copper, silver, and other metals. These materials developed by Third Millennium Metals, LLC are called 'covetics'. The carbon is highly stable despite its form not being predicted in phase diagrams, and remains dispersed after remelting and resolidification. The carbon incorporates into the metal matrix and has an effect on several of the properties of the material. We have performed a detailed investigation of the structure and composition of several covetics using a variety of microscopy and spectroscopy techniques and found that the carbon forms nanoparticles of 5-200 nm diameter that are embedded in the host matrix. EELS spectra obtained from these regions show characteristic shape of carbon nanotubes (CNT). Raman data obtained from these samples also show the G-mode and D-mode characteristic of CNT.
Keywords Carbon nanotubes
Matrix materials
Metal matrix composites
Phase diagrams
Raman spectra

Source Agency Non Paid ADAS
NTIS Subject Category 71F - Composite Materials
99F - Physical & Theoretical Chemistry
Corporate Author Maryland Univ., College Park.
Document Type Technical report
Title Note Conference paper.
NTIS Issue Number 1302
Contract Number N0001410WX20992

Science and Technology Highlights

See a sampling of the latest scientific, technical and engineering information from NTIS in the NTIS Technical Reports Newsletter

Acrobat Reader Mobile    Acrobat Reader