Nanotubes obtained from mono and bimetallic carbides produced by mechanical alloying
Por:
Arceo L.D.B., Vázquez L.R., Orozco E., Febles V.G., Gonzalez E.P., Guerrero F.L.
Publicada:
1 ene 2007
Resumen:
The main purpose of this work was to produce nanotubes using a two step method: mechanical alloying and heat treatment. Mechanical Alloying (MA) was used to prepare the monometallic Co3C carnide and the bimetallic C-25%at Ni-25%at Mo carbide with Ti impuririties by milling of pure elemental powders of cobalt, molibdenum, titanium and carbon, in a high-energy rotatory mill under an Ar atmosphere. The nanocrystalline carbides were used to produce metal filled nanotubes and nanoparticles, by means of precipitation after heating for 15 minutes at 800°C. Microstructural characterisation of the as-milled and heat-treated powders was performed using Transmisssion Electron Microscopy (TEM) techniques. It was possible to obtain filled nanotubes, carbide nanorods, and observe a nucleation phenomena inside carbon cavities.
Filiaciones:
Arceo L.D.B.:
Programa de Ingenieria Molecular, I.M.P., Lázaro Cárdenas 152, C.P. 07730 D.F., Mexico
ESIQIE UPALM IPN, Apdo. Postal 118-395, C.P. 07051 D.F., Mexico
Vázquez L.R.:
Instituto de Fisica UNAM, Apdo. Postal 20-364, C.P. 01000 D.F., Mexico
Orozco E.:
Instituto de Fisica UNAM, Apdo. Postal 20-364, C.P. 01000 D.F., Mexico
Febles V.G.:
Programa de Ingenieria Molecular, I.M.P., Lázaro Cárdenas 152, C.P. 07730 D.F., Mexico
Gonzalez E.P.:
Programa de Ingenieria Molecular, I.M.P., Lázaro Cárdenas 152, C.P. 07730 D.F., Mexico
Guerrero F.L.:
Programa de Ingenieria Molecular, I.M.P., Lázaro Cárdenas 152, C.P. 07730 D.F., Mexico
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