Electrical and thermal properties of titanium hydrides

Various shapes of flaw-free bulk titanium hydrides (TiH_X: X = 1.53–1.75) were fabricated, and its electrical and thermal properties were studied. The electrical conductivity of titanium hydride was slightly lower than that of titanium metal, and it exhibited metal-like temperature dependence. The Seebeck coefficient of the Ti–H system changed from positive to negative due to hydrogenation, and its absolute value for titanium hydride remained at a low magnitude, which is typical for metallic materials. The thermal conductivity of the hydride was the same as that of the metal and increased slightly with increasing temperature.