Application of impedance spectroscopy to study oxidized powders of titanium hydride

• The method of impedance measurement of powder materials is developed.
• Impedance spectroscopy was used to study titanium hydride powders oxidized by air oxygen at different modes.
• Impedance spectroscopy seems suitable for studying of properties of shielding coatings at the particles.

Results of studies of current-conducting properties of titanium hydride powders oxidized by air oxygen at different modes in order to form oxide and oxohydride coatings at the particles surface which enhance heat resistance of the hydride are presented. Method of impedance spectroscopy is used to determine contribution of resistance of the formed coatings and contribution of resistance of the grains of titanium hydride powders into the powder impedance. Method aspects of conducting measurements of the impedance of powder materials by stepwise sample compression are discussed. General approach to experimental data processing related to study of metal hydrides which contain shielding films of various chemical compositions at the particle surface is described.