Corrosion behavior of phosphorus ion-implanted Ni50.6Ti49.4 shape memory alloy

被引：22
|
作者：
Zhao, XK [1 ]
Cai, W [1 ]
Zhao, LC [1 ]
机构：
[1] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China
来源：
SURFACE & COATINGS TECHNOLOGY | 2002年 / 155卷 / 2-3期
关键词：
NiTi alloy; phosphorus; plasma-based implantation (PBII); corrosion;
D O I：
10.1016/S0257-8972(02)00048-8
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Pretreatment of NiTi alloy by plasma-based phosphorus implantation (PBII) is of interest in order to make beta-particle-emitting radioactive stents. Corrosion properties of PBII-treated and un-treated NiTi alloys have been tested with anodic polarization curves in 1% NaCl solution at 37 degreesC. PBII treatment can increase the open-circuit corrosion potential (Ecorr) and decrease the corrosion current density (Icorr). The anodic polarization curves of PBII-treated NiTi alloy show a 'secondary passivation' phenomenon in the potential range of 0.72 to 1.28 V. The existence of P2O5, can probably be connected with the so-called secondary passivation phenomenon. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：236 / 238
页数：3
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