Gold might slow down the growth of helium bubble in iron

作者：Hao W; Geng W T^*

来源：Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms , 2011, 269(12): 1428-1430.

DOI：10.1016/j.nimb.2011.04.007

• Helium bubble
• Au
• Martensitic steels
• First-principles

We predict by first-principles calculations that Au is strongly bound to He in bcc Fe. Therefore, a segregated Au layer may form at the He bubble surface. The electron density in between Au-Au is found to be remarkably higher than in between Fe-Fe and Au-Fe atoms. As a result, the Au layer could serve as an effective barrier to approaching He atoms and hence slow down the bubble growth.

• 出版日期2011-6-15
• 单位北京科技大学