ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
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 themonometallic Co3C carnide and the bimetallic C-25%at Ni-25%at Mo carbide with Ti impuriritiesby milling of pure elemental powders of cobalt, molibdenum, titanium and carbon, in a high-energyrotatory mill under an Ar atmosphere. The nanocrystalline carbides were used to produce metalfilled 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 usingTransmisssion Electron Microscopy (TEM) techniques. It was possible to obtain filled nanotubes,carbide nanorods, and observe a nucleation phenomena inside carbon cavities
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/15/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.539-543.2731.pdf
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