Surface modification of NiTi alloy by ion and gas cluster ion irradiation. The role of chemical segregation

被引：0
作者：
Chernysh, V. S. [1 ]
Ieshkin, A. E. [1 ]
Kireev, D. S. [1 ]
Tatarintsev, A. A. [1 ]
Senatulin, B. R. [2 ]
Skryleva, E. A. [2 ]
机构：
[1] Lomonosov Moscow State Univ, Phys Fac, Moscow, Russia
[2] Natl Univ Sci & Technol MISiS, Moscow 119049, Russia
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2024年 / 554卷
基金：
俄罗斯科学基金会;
关键词：
Nitinol; Sputtering; cluster ion; XPS; Surface composition; Surface segregation; Nanotopography; ANGULAR-DISTRIBUTIONS; AR+ ION;
D O I：
10.1016/j.nimb.2024.165463
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Nitinol is an alloy of roughly equiatomic nickel and titanium, having shape memory and widely used in many applications, such as aerospace, automotive, biomedical and others. One of techniques for its treatment is plasma or ion beam irradiation. In the work we investigated surface composition and topography of the alloy formed by ion and cluster ion bombardment. A strong enrichment of the surface with nickel is detected, which does not agree with contemporary ideas about preferential sputtering. The results were compared with other known results in the area, and the processes occurring under ion irradiation of compound materials were discussed. The role of ambient oxygen in the steady state surface composition establishing is described.
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页数：5
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