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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/7481

Title: Sintering behavior of titanium-titanium nitride nanocomposite powders
Authors: DABHADE, VV
MOHAN, TRR
RAMAKRISHNAN, P
Keywords: mechanical-properties
sic nanocomposite
self-diffusion
al
particles
aluminum
microstructure
densification
composites
ceramics
Issue Date: 2008
Publisher: ELSEVIER SCIENCE SA
Citation: JOURNAL OF ALLOYS AND COMPOUNDS, 453(1-2), 215-221
Abstract: The sintering behavior of titanium-titanium nitride nanocomposite powders has been investigated by dilatometry. Micron-sized titanium powders of average particle size of similar to 12 mu m and nano sized titanium nitride powders of average particle size of similar to 50 nm were used to produce two compositions of Ti-8 wt%TiN and Ti-15 wt%TiN by physical mixing and ultrasonification. Dilatometry was carried out by constant rate of heating (10 degrees C/min) to various temperatures in the range of 650-1250 degrees C followed by isothermal holding for I h. The effect of nano TiN dispersion on the sintering onset temperature, linear shrinkage, shrinkage rate, activation energy, and microstructure of titanium was investigated. The sintering of titanium-titanium nitride nanocomposites was found to be influenced by the sintering between the Ti-Ti contacts (self diffusion), Ti-TiN contacts (diffusion of N into Ti), TiN-TiN contacts, the role of oxygen as well as the alpha-beta transformation in titanium. (C) 2006
URI: http://dx.doi.org/10.1016/j.jallcom.2006.11.187
http://dspace.library.iitb.ac.in/xmlui/handle/10054/7481
http://hdl.handle.net/10054/7481
ISSN: 0925-8388
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