Corrosion Behaviour of Selective Laser Melted Ti-TiB Biocomposite in Simulated Body Fluid

被引：173
作者：
Chen, Yang [1 ]
Zhang, Junxi [1 ]
Dai, Nianwei [1 ]
Qin, Peng [2 ]
Attar, Hooyar [2 ]
Zhang, Lai-Chang [2 ]
机构：
[1] Shanghai Univ Elect Power, Shanghai Key Lab Mat Protect & Adv Mat Elect Powe, Shanghai 200090, Peoples R China
[2] Edith Cowan Univ, Sch Engn, 270 Joondalup Dr, Perth, WA 6027, Australia
来源：
ELECTROCHIMICA ACTA | 2017年 / 232卷
基金：
澳大利亚研究理事会;
关键词：
Titanium biocomposite; Selective laser melting; Corrosion resistance; Passive film; COMMERCIALLY PURE TITANIUM; MECHANICAL-PROPERTIES; TI-6AL-4V ALLOY; GALVANIC CORROSION; MATRIX COMPOSITES; AL-12SI ALLOY; DEGREES-C; MICROSTRUCTURE; RESISTANCE; WEAR;
D O I：
10.1016/j.electacta.2017.02.112
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The corrosion behaviour of CP-Ti and Ti-TiB composite produced by selective laser melting (SLM) in the artificial simulated body fluid (Hank's solution) at body temperature was investigated systematically by using electrochemical measurements (potentiodynamic polarisation curves and electrochemical impedance spectroscopy), together with some detailed structural characterisations. The results demonstrate that SLM-produced Ti-TiB composite samples possess better corrosion resistance than SLM-produced CP-Ti samples in Hank's solution. Due to these tiny TiB and TiB2 particles acting as the micro-cathode uniformly distributing in titanium matrix, anodic dissolution of titanium matrix in the corrosion process is prominently facilitated in early stages, followed by rapid passivation on the surface. The corrosion mechanism of Ti-TiB composite samples has also been discussed in detail in this paper. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：89 / 97
页数：9
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