Evidence of Copious Vacancy Formation in Ni and Pd under a High Hydrogen Pressure
スポンサーリンク
概要
- 論文の詳細を見る
From in situ observation of X-ray diffraction of Ni and Pd under a high hydrogen pressure (&≃5 GPa) and temperatures (&≥800℃), anomalous lattice contraction of the hydride was found to occur in 2〜3 h. This contraction, amounting to 〜0.5Å^3 per a metal atom, remained in the recovered specimen even after the hydrogen was removed by heating to 400℃, but was annealed out at 800℃. The concentration of vacancies responsible for this effect is estimated at 〜20% of metal-atom sites. Anomalous concentration dependence of the hydrogen-induced volume and enhanced diffusion of metal atoms are explained in terms of this effect.
- 社団法人応用物理学会の論文
- 1993-09-01
著者
-
FUKAI Yuh
Department of Physics, Chuo University
-
Fukai Yuh
Department Of Physics Chuo University
-
OKUMA Nobuyuki
Department of Physics, Chuo University
-
Okuma Nobuyuki
Department Of Physics Chuo University
関連論文
- The Phase Diagram of Mo-H Alloys under High Hydrogen Pressures
- Superabundant Vacancy Formation in Iron under High Hydrogen Pressures: Thermal Desorption Spectroscopy
- Anomalous Elastic Properties of Fe_2TiO_4
- Theory of Light Interstitials in BCC Metals. II. Localized Vibration Spectra of H and D on T-Sites in V, Nb and Ta
- Phase Diagram and Superabundant Vacancy Formation in Cr-H Alloys
- Hydrogen in Iron : Its Enhanced Dissolution under Pressure and Stabilization of the γ Phase
- Effects of High Pressure on the Structure of VH_ and NbH_
- Hydrogen Dissolution and Structural Changes in Electrodeposited Cr Films
- Heat Treatment for the Stabilization of Hydrogen and Vacancies in Electrodeposited Ni-Fe Alloy Films
- Energy and Wave Functions of Interstitial Hydrogen in FCC and BCC Metals
- Evidence of Copious Vacancy Formation in Ni and Pd under a High Hydrogen Pressure
- Local Electronic Environment of Protons in VH_x Alloys: Knight Shift and T_1 of Proton NMR
- Calorimetric Studies of the Behavior of Hydrogen in Vanadium and Vanadium Alloys
- Evidence for Quantum Diffusion of Hydrogen in Ta: Quench-Recovery Experiments Revisited
- Trapping of hydrogen by solute atoms in Nb-Mo alloys as observed by the channelling method.
- Hydrogen in the earth's core. Experimental approach.:Experimental Approach
- Isothermal compression and stability of perovskite-type CaSiO3.