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Influence of N^+implantation on structure,morphology,and corrosion behavior of Al in NaCl solution

Chinese Physics B 2020年第5期29卷 516-524页

作者： hadi savaloni Rezvan Karami Helma Sadat Bahari Fateme Abdi School of Physics College of ScienceUniversity of TehranTehranIran

Structural and morphological changes as well as corrosion behavior of N+implanted Al in 0.6 M NaCl solution as function of N+fluence are *** x-ray diffraction results confirmed AlN *** atomic force microscope(AFM)images showed larger grains on the surface of Al with increasing N+*** can be due to the increased number of impacts of N+with Al atoms and energy conversion to heat,which increases the diffusion rate of the incident ions in the ***,the number of the grain boundaries is reduced,resulting in corrosion resistance *** impedance spectroscopy(EIS)and polarization results showed the increase of corrosion resistance of Al with increasing N+*** data was used to simulate equivalent electric circuits(EC)for the *** dependence of the surface morphology on the EC elements was *** scanning electron microscope(SEM)analysis of the samples after corrosion test also showed that the surfaces of the implanted Al samples remain more intact relative to the untreated Al sample,consistent with the EIS and polarization results.

关键词： aluminium ion implantation surface morphology corrosion electrochemical impedance spectroscopy polarization

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Surface nanostructure modification of Al substrates by N^+ ion implantation and their corrosion inhibition

引用

Transactions of Nonferrous Metals Society of China 2017年第3期27卷 701-710页

作者： FatemeABDI hadisavaloni Department of Physics University of TehranNorth-Kargar StreetP.O.Box 143951547Tehran ***Iran

The influence of implantation of N+ions of different energies on the nanostructure of7049Al substrates and the corrosioninhibition of produced Al samples in a3.5%NaCl solution was *** X-ray diffraction(XRD)results confirmed the formationof AlN as a result of N+ion *** atomic force microscope(AFM)results showed that grains of larger scale are formedby increasing N+energy which can be due to heat accumulation in the sample during implantation causing higher rate of diffusion inthe sample,hence decreasing the number of *** resistance of the samples was studied by the electrochemicalimpedance spectroscopy(EIS)*** showed that corrosion resistance of implanted Al increases with increasing N+ion *** equivalent circuits for the N+implanted Al samples with different energies were obtained,using the EIS data whichshowed strong dependence of the equivalent circuit elements on the surface morphology of the ***,the relationshipbetween corrosion inhibition and equivalent circuit elements was investigated.

关键词： ion implantation aluminum corrosion electrochemical impedance spectroscopy equivalent circuit

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