Takashi Morozumi

Titanium concentration in FeTix (l ⩽ x ⩽ 2) alloys and its effect on hydrogen storage properties

Abstract The effect of the surface and bulk properties of FeTix (1 =⩽ x ⩽ 2) on its hydrogen storage characteristics was investigated by X-ray photoelectron spectroscopy, Mossbauer spectroscopy and metallographic observations. It is shown that several problems encountered with FeTi, such as the necessity of employing activation treatment and the surface sensitivity resulting from poisoning by impurity gases, can be reduced if alloys with a non-equilibrium structure are prepared by the addition of excess titanium.

Application of Deuteron Accelerator in Studies of Hydrogen Uptake in Corroding Titanium Surface

from the Cockcroft-Walton accelerator, and the amount and distribution of the absorbed deuterium were determined by counting the number of neutron emitted by the 2D(d,n)3He reaction. The relationship between the deuterium distribution and the neutron count-deuteron energy characteristics derived based on the data of the cross-section of the above reaction and the deuteron range given by Arnold and the others was consistent with the observed results. The proposed method can elucidate the amount of saturation and the approximate diffusion constant of deuterium in the surface region within the depth less than 1 micron.