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Anti-corrosion Properties of Rosemary Oil and Vanillin on Low Carbon Steel in Dilute Acid Solutions

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TMS 2018 147th Annual Meeting & Exhibition Supplemental Proceedings (TMS 2018)

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Abstract

The corrosion inhibition effect of rosemary oil and vanillin (ROV) on low carbon steel in 1 M HCl and H2SO4 media was studied through potentiodynamic polarization, weight loss analysis, optical microscopy and IR spectroscopy. Results showed optimal inhibition performance of the compound, but more effectively in HCl solution at 92.57 and 94% compared to 64.57 and 64.55% in H2SO4 from both electrochemical test. Identified functional groups of the admixture from IR spectroscopy completely adsorbed on the steel in HCl, but partially in H2SO4. Thermodynamic calculations showed chemisorption and physiochemical adsorption according to Langmuir, Freundlich and Temkin isotherm model. Micro-analytical images revealed a well-protected ROV inhibited steel surface in comparison to images from the corroded stainless steel. The inhibition behavior of ROV was determined to be mixed type.

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Acknowledgements

The author acknowledges Covenant University Ota, Ogun State, Nigeria for the sponsorship and provision of research facilities for this project.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Covenant University, Ota, Ogun State, Nigeria

    Roland Tolulope Loto, Cleophas Akintoye Loto & Bryan Ayozie

  2. Department of Chemical, Metallurgical and Materials Engineering, Tshwane University of Technology, Pretoria, South Africa

    Tayo Sanni

Authors
  1. Roland Tolulope Loto
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  2. Cleophas Akintoye Loto
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  3. Bryan Ayozie
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  4. Tayo Sanni
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Corresponding author

Correspondence to Roland Tolulope Loto .

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  1. Pittsburgh, Pennsylvania, USA

    The Minerals, Metals & Materials Society

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© 2018 The Minerals, Metals & Materials Society

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Loto, R.T., Loto, C.A., Ayozie, B., Sanni, T. (2018). Anti-corrosion Properties of Rosemary Oil and Vanillin on Low Carbon Steel in Dilute Acid Solutions. In: & Materials Society, T. (eds) TMS 2018 147th Annual Meeting & Exhibition Supplemental Proceedings. TMS 2018. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-319-72526-0_84

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