Stabilization of Lattice Defects in HPT-deformed Palladium Hydride
Recent investigations on palladium hydride (Pd-H) showed, for the first time, evidence of formation of vacancy-hydrogen (Vac-H) clusters during Severe Plastic Deformation (SPD) effected by High Pressure Torsion (HPT). Vacancy concentrations produced in Pd-H by this method are extraordinarily high. DSC-scans show that the thermal stability range of vacancies is extended by about 150K due to trapping of hydrogen leading to the formation of vacancy-hydrogen clusters. Recent experiments give evidence that the mobility of the H atoms and/or the vacancies is conditional for the formation of Vac-H clusters during HPT. Results furthermore indicate defect stabilization by hydrogen trapping not only for vacancy-type defects but also for dislocations and grain boundaries.
Matthias Bonisch Michael J.Zehetbauer M.Krystian D.Setman G.Krexner
University of Vienna,Faculty of Physics,Physics of Nanostructured Materials Boltzmanng.5,A-1090 Wien University of Vienna,Faculty of Physics,Physics of Nanostructured Materials Boltzmanng.5,A-1090 Wien University of Vienna,Faculty of Physics,Physics of Functional Materials Boltzmanng.5,A-1090 Wien,Aus
国际会议
5th International Conference on Nanomaterials by Severe Plastic Deformation(第五届剧烈塑性变形纳米材料国际会议)
南京
英文
427-432
2011-03-01（万方平台首次上网日期，不代表论文的发表时间）