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Electrochemical and surface modifications on N+-ion implanted Ti-5Al-2.5Fe immersed in HBSS

被引：25
作者：
Leitao, E
Silva, RA
Barbosa, MA
机构：
[1] UNIV PORTO, FAC ENGENHARIA, P-4099 OPORTO, PORTUGAL
[2] INST SUPER ENGENHARIA PORTO, P-4200 OPORTO, PORTUGAL
来源：
CORROSION SCIENCE | 1997年 / 39卷 / 02期
关键词：
titanium alloys; EIS; XPS; passive films;
D O I：
10.1016/S0010-938X(97)83352-5
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The electrochemical behaviour of nitrogen ion-implanted Ti-5Al-2.5Fe was studied in HBSS-Hank's balanced salt solution, by open-circuit potential vs time and cyclic polarization techniques. Three fluences (10(15) 10(16) and 10(17)ions/cm(2)) were used. All ion-implanted surfaces showed higher corrosion resistance than the nonimplanted ones. The corrosion potential of the ion-implanted samples was more noble and their passivation current was lower than the non-implanted ones. X-ray photo-electron spectroscopy showed that the immersion of Ti-5Al-2.5Fe in HBSS produces a Ca- and P-rich surface layer. (C) 1997 Elsevier Science Ltd.
引用
收藏
页码：377 / 383
页数：7
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