کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1562358 | 999586 | 2011 | 4 صفحه PDF | دانلود رایگان |

A first principles density functional theory study to investigate the H defect in NiTi alloy is presented. We have determined the interstitial H atom position in bulk B2 phase NiTi alloy. H positions on both the Ti and Ni terminated NiTi surfaces are calculated. Surface adsorptions of H atom on Ni/Ti terminated surfaces are calculated for a low surface coverage of 1.96 × 1014 cm−2. We have also calculated the penetration barrier energy for an H atom from the surface site to the bulk lattice site.
Research highlights
► Interstitial hydrogen position in NiTi shape memory alloy.
► Surface adsorption of hydrogen atom on NiTi shape memory alloy.
► Surface diffusion of hydrogen atom on Ni and Ti terminated surface of NiTi alloy.
► Diffusion of H atom from surface to the NiTi bulk lattice site.
Journal: Computational Materials Science - Volume 50, Issue 3, January 2011, Pages 820–823