Chemical Equilibria in the Titanium(ll) Hydride‐Boron Nitride System
Identifieur interne : 001D61 ( Main/Exploration ); précédent : 001D60; suivant : 001D62Chemical Equilibria in the Titanium(ll) Hydride‐Boron Nitride System
Auteurs : Ewa Benko [Pologne]Source :
- Journal of the American Ceramic Society [ 0002-7820 ] ; 1995-03.
Abstract
Calculations of chemical equilibria for the TiH2‐BN system using the Villars, Cruise, Smith (VCS) algorithm were carried out for the 27–2027°C temperature range and the 1.3 × 10−3‐1 × 107 Pa pressure range. Two BN:TiH2 molar ratios were selected, 1:1 and 2:1. It follows from these studies that TiH2 can react with BN in a very wide range of pressures and temperatures, giving new phases, namely TiB2, TiB, and TiN. The formation of these phases is strongly influenced by pressure‐temperature parameters. In order to verify theoretical calculations by experiment, equimolar and 2:1 BN:TiH2 batches were prepared and heated at 1427°C under vacuum, in an argon atmosphere, and under high pressure. Phase identification carried out by X‐ray diffraction fully corroborated the computational results.
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DOI: 10.1111/j.1151-2916.1995.tb08233.x
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