Investigation Nano-Mechanical Properties of NiTi alloy Modified by Carbon Plasma Immersion Ion Implantation

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SHANAGHI ALI; AHMADIAN ZAHRA; SOURI ALIREZA

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Journal: JOURNAL OF ADVANCED MATERIALS AND TECHNOLOGIES Year:2019 | Volume:8 | Issue:2 Page(s): 61-69

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Title

Investigation Nano-Mechanical Properties of NiTi alloy Modified by Carbon Plasma Immersion Ion Implantation

Author(s)

SHANAGHI ALI | AHMADIAN ZAHRA | SOURI ALIREZA | Issue Writer Certificate

Keywords

CarbonizingQ1

Plasma immersion ion implantationQ1

NiTi alloyQ2

Nano-mechanical propertiesQ1

Abstract

Due to ultra-high flexural flexibility, shape memory effect, high damping properties, corrosion resistance and good biocompatibility, the nitinol alloys (NiTi) are widely used in the manufacture of medical and biocompatible materials, such as stent, orthopedic implants and surgical instruments. But one of the most important problems of NiTi alloy is the release of nickel ions due to the destruction of the surface, which these ions can interfere with the enzymatic processes involved in protein synthesis and cell proliferation. The applied coating and ion implantation is one of the most important methods for improving the surface and behavior of the NiTi alloy. In this study, surface of NiTi alloy was modified by carbon Plasma immersion ion implantations (CPIII). Then nanomechanical properties of coating were surveyed by atomic force microscopy (AFM) with nano-indentation, nano-scratch methods, and also corrosion behavior was investigated by polarization test in 0. 5 M NaCl solution. The results indicate a completely homogeneous, uniform and free surface imperfection with a carbon ion implantation depth of about 50 nm, and decreased average surface roughness from 34to 25 nm. The ion implantation process resulted in increasing the hardness and elastic modulus of 80. 7% and 21. 8%, respectively, and reducing the average friction coefficient from 0. 21 to 0. 16, and also making dominant the shear wearing mechanism, with a 85% increase in corrosion resistance efficiency.

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APA: Copy

SHANAGHI, ALI, AHMADIAN, ZAHRA, & SOURI, ALIREZA. (2019). Investigation Nano-Mechanical Properties of NiTi alloy Modified by Carbon Plasma Immersion Ion Implantation. JOURNAL OF ADVANCED MATERIALS AND TECHNOLOGIES, 8(2 ), 61-69. SID. https://sid.ir/paper/252345/en

Vancouver: Copy

SHANAGHI ALI, AHMADIAN ZAHRA, SOURI ALIREZA. Investigation Nano-Mechanical Properties of NiTi alloy Modified by Carbon Plasma Immersion Ion Implantation. JOURNAL OF ADVANCED MATERIALS AND TECHNOLOGIES[Internet]. 2019;8(2 ):61-69. Available from: https://sid.ir/paper/252345/en

IEEE: Copy

ALI SHANAGHI, ZAHRA AHMADIAN, and ALIREZA SOURI, “Investigation Nano-Mechanical Properties of NiTi alloy Modified by Carbon Plasma Immersion Ion Implantation,” JOURNAL OF ADVANCED MATERIALS AND TECHNOLOGIES, vol. 8, no. 2 , pp. 61–69, 2019, [Online]. Available: https://sid.ir/paper/252345/en

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