Study on the Performances Properties of Medical Pure Magnesium by Ion Implantation of Nitrogen

Abstract:

To improve medical pure magnesium corrosion and wear resistance, the advanced plasma implantation technology were used to implanted medical pure magnesium with nitrogen ions under certain conditions, obtaining a certain depth of nitrogen ion implantation layer, and to study the surface properties of the implantation layer. The sample after ion implanted, the surface morphology, phase composition were analyzed, and have electro chemical corrosion tests, friction and wear tests, the results showed that: pure magnesium by nitrogen ion implantation, can be obtained a surface organizations which whole flat, compact, no surface cracks and holes; the surface implantation layer mainly composed of Mg and MgO, also found a small amount of Mg₃N₂, which is also the main reason for corrosion and wear resistance improved; compared to pure magnesium base, nitrogen ion implantation (process conditions: implantation energy: 40KeV, implantation dose: 3×10¹⁷ions/cm², control temperature: 200°C) improved the corrosion resistance of the sample, but not obvious, about 1.2%; however, the friction coefficient decreased significantly, approximately 61%, the amount of wear also reduced significantly, about 74%, this means that, its wear resistance has been improved significantly. This study provides a reference to improve the surface properties of pure magnesium and be learned to develop a more reasonable parameters for further study of medical pure magnesium by ion implantation of nitrogen.

• Periodical: Advanced Materials Research (Volume 1142)
• Pages: 31-36
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1142.31
• Online since: January 2017
• Authors: De Weng Tang, Wen Ming Zhang, Rui Lan Zhao, Xi Jian Lv
• Keywords: Corrosion Resistance, Ion Implantation, Medical Pure Magnesium, Wear Resistance

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