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Crystallizing Ideas – The Role of Chemistry pp 363–370Cite as

The Study of the Microstructure and Interfacial Reaction of Binary Composite Coating

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Abstract

Surface modification is known to contribute immensely to the properties of alloys. The motivation behind this present study is to develop a bath with quality coating with targeted Zn–SnO2 reinforced Zn-based composite particulate produced by electrolytic co-deposition route. The influence of SnO2 on Zn–13SnO2 sulphate electrolyte on the properties of the nano-particulate coatings was investigated. SnO2 was varied from 0 to 16 wt%. The microchemistry and interfacial structural properties were tested by X-ray diffraction (XRD), optical microscope, scanning electron microscope (SEM) equipped with energy disperse spectrum (EDS). The corrosion degradation properties in 3.65 % NaCl static solution at 40 °C were characterized by high-resolution optical microscope (HR-OPM). The structure of the conditioned composite coating indicates the presence of thin blend phase of ZnSn2, Zn2Sn and Zn. The microstructure revealed good distribution of particulate within the interface. The corrosion rate results properties shows 0.007786 mm/year for Zn–7Sn–0.3 V–S. The study has established that up to 13 wt% SnO2 particulate in bath on mild steel can be used in improving the structural and corrosion resistance of mild steel.

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References

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Acknowledgements

This material is based upon work supported financially by the National Research Foundation, South Africa. The equipment support by Surface Engineering Research Centre (SERC) Tshwane University of Technology, Pretoria is deeply appreciated.

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Authors and Affiliations

  1. Department of Chemical, Metallurgical and Materials Engineering, Tshwane University of Technology, P.M.B. X680, Pretoria, South Africa

    Ojo Sunday Isaac Fayomi, Abimbola Patricia Idowu Popoola & Cleophase Akin Loto

  2. Department of Mechanical Engineering, Covenant University, P.M.B 1023, Ota, Nigeria

    Ojo Sunday Isaac Fayomi & Cleophase Akin Loto

Authors
  1. Ojo Sunday Isaac Fayomi
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  2. Abimbola Patricia Idowu Popoola
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  3. Cleophase Akin Loto
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Corresponding author

Correspondence to Ojo Sunday Isaac Fayomi .

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Editors and Affiliations

  1. Dep. of Chemistry, Fac. of Science, University of Mauritius, Reduit, Mauritius

    Ponnadurai Ramasami

  2. Dept of Chemistry, Faculty of Scien, University of Mauritius, Reduit, Mauritius

    Minu Gupta Bhowon

  3. Dept. of Chemistry, Faculty of Scie, University of Mauritius, Reduit, Mauritius

    Sabina Jhaumeer Laulloo

  4. Reduit, Mauritius

    Henri Li Kam Wah

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© 2016 Springer International Publishing Switzerland

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Fayomi, O.S.I., Popoola, A.P.I., Loto, C.A. (2016). The Study of the Microstructure and Interfacial Reaction of Binary Composite Coating. In: Ramasami, P., Gupta Bhowon, M., Jhaumeer Laulloo, S., Li Kam Wah, H. (eds) Crystallizing Ideas – The Role of Chemistry. Springer, Cham. https://doi.org/10.1007/978-3-319-31759-5_23

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