Affiliation:
1. Wuhan University of Technology
Abstract
Combustion synthesis of titanium diboride(TiB2) from titanium(Ti) and boron(B)
powders was studied by theoretical calculation and experimental analysis. In high temperature
range or in low temperature range, the calculated activation energies are 140KJ/mol or 355KJ/mol
respectively, which is described by a change from dissolution-precipitation controlled process to
diffusion-controlled process. With the increase of particle size of the raw materials, combustion
temperature and propagating rate will both reduce. The propagating rate decreases with the addition
of diluents. Further increase of diluents may result in a stop of the combustion wave halfway or
even a failure of ignition.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science
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