Surface composition of ion bombarded nickel based alloys

被引：8
作者：
Chernysh, V. S. [1 ]
Brongersma, H. H. [2 ,3 ]
Bruener, P. [3 ]
Grehl, T. [3 ]
机构：
[1] Moscow MV Lomonosov State Univ, Fac Phys, Moscow 119991, Russia
[2] Eindhoven Univ Technol, Eindhoven, Netherlands
[3] IONTOF GmbH, Munster, Germany
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2019年 / 460卷
关键词：
Sputtering; Preferential sputtering; Low energy ion scattering spectroscopy; LOW-ENERGY; SEGREGATION;
D O I：
10.1016/j.nimb.2019.02.008
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
The composition of NixPdy (x, y = 1, 5) and NiMoRe alloys irradiated by 3 and 4 keV Ar+ ions along the normal to the sample surface was investigated in situ by low energy ion scattering spectroscopy (LEIS). The analysis was performed using a 5 keV Ne+ ion beam. It was found that the composition of the topmost layer of bombarded NixPdy alloys nearly corresponds to the alloy stoichiometry. In the case of irradiation of the NiMoRe alloy, a surface enrichment with the heavier components (Mo and Re) was found. The thermally activated Gibbsian segregation in NiPd and NiPd5 alloys was also studied using LEIS.
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页码：180 / 184
页数：5
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