PREPARATION OF CERAMIC POWDERS
BASED ON TITANIUM NITRIDE ON HEATING
COMMERCIAL TITANIUM POWDER IN AIR
Yu. I. Strokova,
A. A. Gromov,
and V. I. Vereshchagin
Translated from Novye Ogneupory, No. 6, pp. 55 – 57, June 2008.
Original article submitted February 14, 2008.
Theoretical bases are presented for preparing ceramic powders based on titanium and aluminum nitrides.
The basic advantages are formulated for self-propagating high-temperature synthesis of metal nitride
powders in air compared with known preparation methods. The main results are summarized and presented
for preparing titanium nitride powder with combustion in air of cylindrical and conical specimens of
commercial titanium powder. The effect of specimen shape and weight on combustion rate and the final phase
composition of the powders obtained is considered. The possibility is demonstrated of preparing titanium
nitride with combustion of coarsely dispersed titanium powder in air.
Ceramics and composites based on titanium nitride are
used as coatings for cutting and machining tools, for grinding
precious stones, in the manufacture of heat-resistant mate-
rials, wear-resistant coatings, and also in microelectronics
due to high strength, chemical stability, heat- and wear
resistance of titanium nitride [1, 2].
The main methods for preparing titanium nitride are 
nitriding of titanium metal or its hydride; reaction in the gas
phase between TiCl
and ammonia or a mixture of nitrogen
and hydrogen; decomposition of titanium aminochlorides
and other similar compounds containing titanium and nitrogen;
reduction of TiO
with carbon or metals in a nitrogen atmo
Recently there has been extensive use of self-propa
gating high-temperature synthesis (SHS) of TiN as the most
economically desirable method [4, 5]. SHS of nitrides is
carried out with combustion of metal powders in an atmo
sphere of nitrogen or ammonia. According to the opinion of
the authors in  the it is difficult to prepare titanium nitride
in the Ti – air system as a result of the development of an
oxynitride phase at the specimen surface after forming
nitride, and also due to further oxidation of TiN to TiO
In  formation was recorded for the first time of a
significant amount of TiN on burning very fine titanium
powder in air. The titanium nitride content in the combustion
products was about 45%.
We have studied phase formation processes in order to
prepare TiN by burning coarse titanium powder in air at
In order to synthesize TiN by the SHS method in air
coarse titanium powder (Fig. 1) was used, in which as a
result of screen analysis there was predominance of particles
with a size of 630 – 100 mm (86 wt.%). The true density of
the test titanium powder was 4.27 and the bulk density was
Refractories and Industrial Ceramics Vol. 49, No. 4, 2008
1083-4877/08/4904-0293 © 2008 Springer Science+Business Media, Inc.
GOUVPO Tomsk Polytechnic University, Russia.
Fig. 1. Original titanium powder.