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Title: Corrosion behavior of the nitrided of NiTi shape memory alloy in simulated body fluid solution
Authors: Zhang, S
Wang, Q
Zhang, C
Man, H 
Keywords: Corrosion resistance
Electrochemical impedance spectroscopy
Laser gas nitriding
Metallic materials
NiTi shape memory alloy
Issue Date: 2006
Publisher: 中國學術期刊(光盤版)電子雜誌社
Source: 材料硏究學報 (Chinese journal of materials research), 2006, v. 20, no. 4, p. 422-426 How to cite?
Journal: 材料硏究學報 (Chinese journal of materials research) 
Abstract: Laser gas nitrided (LGN) layer on the surface of NiTi shape memory alloy (SMA) was fabricated by irradiation of Nd-YAG laser in N2 environment. A compact laser modified coating reinforced with fine TiN metal matrix composite was obtained. The corrosion behavior of the laser gas nitrided layer in Hank's simulated body fluid at 37°C was investigated. The corrosion potential, breakdown potential and polarization resistance of laser gas nitrided NiTi SMA are higher than those of NiTi SMA. The values of corrosion current and interfacial capacitance are lower. Laser surface modification effectively improved the corrosion resistance of NiTi SMA used as an implant biomedical material in simulated body fluid.
ISSN: 1005-3093
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