Title: Corrosion Behaviour of Tantalum Implanted with Argon and Nitrogen Ions

Biography:

I am a faculty member of the Islamic Azad University of Tehran. I have a solid state physics degree. The field of my work and scientific activity is the nanoscale materials and physical properties of materials. At present, I have students who work with them in the subject of corrosion and physical properties of materials.Dr. Amir Houshang Ramezani, Head of Young Researchers and Elite Students Club.

Abstract

The surface bombardment with inert gases mainly produces structural changes, modifying topography and morphology that atomic force microscopy analysis reveals significant changes on the surface. In this paper the effect of nitrogen and argon ion implantation on surface structure and resistance against tantalum corrosion is investigated.   These experiment nitrogen ions with the energy of 30 keV and doses of 3 × 10 ¹⁷ ions/cm² are used. Roughness variations before and after implantation are observed by Atomic force microscopy (AFM). Also the corrosion analysis apparatus is used for comparison of resistance against Tantalum corrosion before and after ion implantation. Results show that nitrogen ion implantation has a substantial effect on resistance improvement against tantalum corrosion. The aim of this article is to achieve the best condition of tantalum formation. The corrosion potential curves and roughness values obviously indicate that corrosion potential variations caused to the different doses of     Nitrogen ion bombardment are inversely proportional to surface    roughness.After the corrosion test, Scanning Electron Microscopy (SEM) analyzed the samples’ surface morphologies. In addition, the elemental composition is characterized by energy –dispersive X-ray (EDX) analysis.