Kinetics of H_2 liberation during decomposition of TiH_(1.95) from Al -^sTiH_(1.95) composition prepared in the form of powder mixtures with a bulk density of 1.3 g/cm~3 (1), cold compacts with a density of 1.8 g/cm~3 (specimen 2) and chips cut from hot extruded strips with a density of 2.76 g/cm~3 (specimen 3) have been studied. Kinetics of hydrogen liberation during decomposition of TiH_(1.95) was studied in the case of heating of specimens (1-3) at temperatures up to 600 °C in sealed containers under vacuum conditions or under vacuum conditions with subsequent filling with argon. The quantity hydrogen liberated from compositions 1-3 in a closed verified space under vacuum conditions or vacuum plus argon conditions at a heating temperature up to 600 °C has been determined. A pilot laboratory facility has been designed, fabricated and used to carry out all experiments. A procedure for hydrogen liberation experiments has been developed, that provided the possibility to estimate a change in the hydrogen content in the formula TiH_x during heating of the above mentioned specimens at a temperature up to 600 °C. The effect of techniques used for preparation of compositions 1-3 and changes in a density of media on kinetics of hydrogen liberation from decomposing TiH_(1.95) compound in the closed space has been studied. In terms of amount of hydrogen liberated in a temperature range from 400 °C up to 600 °C, the compositions under study are ranking in the following sequence: (1) → (2)→ (3). The regularity of decreasing of a rate of liberation and amount of liberated hydrogen depending on a density of TiH_(1.95) -bearing powder aluminum matrix has been determined. In addition, the effect of oxide-bearing films covering titanium hydride TiH_(1.95) particles located both inside and on surface of aluminum matrix on a rate of titanium hydride decomposition and features of hydrogen diffusion is discussed. The found regularities of titanium hydride decomposition in the said specimens (1 - 3) during heating up to 600 °C allows one to calculate a degree of decomposition of initial TiH_(1.95) to any TiH_x compound during all technological heating operations incorporated in precursor production.
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