TITANIUM AND HYDROGEN
FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH
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An investigation was made of the interaction of titanium with hydrogen. According to the work performed, the following conclusions can be made. Maximum content of hydrogen in powder titanium is equal to 42.96 l100 g, and in compact titanium, 38.14 1100g. Temperature of beginning of reaction of hydrogen is equal to 330C. Maximum saturation of titanium by hydrogen is observed in interval 300-500C. Speed of saturation by hydrogen of compact titanium is limited by diffusion. During investigation of the kinetics of dissociation of titanium, decomposition of hydride starts at a temperature of 350-380C, and maximum speed of dissociation in vacuum, depending upon conditions of experiment, was observed at 570-650C. On the basis of experiments of determination of elasticity of dissociation of titanium hydride in interval of temperatures 300-700C, it is shown that from 300C there starts desorption of hydrogen, and from 500C -dissociation of hydride. At a temperature of 25C the free energy of formation and dissociation of titanium hydride on the basis of the obtained data is equal to 10,100 calmole, entropy 22 caldeg. and thermal effect 16,700 calmole.
- Inorganic Chemistry
- Metallurgy and Metallography