Effect of thermal treatment on the interfacial reaction, microstructural and mechanical properties of Zn–Al–SnO2/TiO2 functional coating alloys

Fayomi, O. S. I and Popoola, A. P. I. and Aigbodion, V.S. (2014) Effect of thermal treatment on the interfacial reaction, microstructural and mechanical properties of Zn–Al–SnO2/TiO2 functional coating alloys. Journal of Alloys and Compounds. pp. 455-463.

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Abstract

In this paper, the microstructure and thermal treatment behavior of Zn–Al–SnO2/TiO2(Zn–Al–Sn/Ti) produced through co-deposition route was investigated. 7.0–13.0 wt% TiO2 and SnO2 was added to Zn–Al bath. Thermal treatment was done for 2 h at 200 �C, 400 �C and 600 �C. The ageing characteristics of the coated alloys were evaluated using (SEM/EDS) and XRD. The hardness and wear value of the thin film were examined with micro-hardness and UMT-2 sliding tester respectively. The corrosion properties were evaluated by linear polarization in 3.65% NaCl. From the result obtained, the coating exhibited good stability. The uniform distribution of the composites on the fabricated alloy and age-treatment were the major factor responsible for the mechanical and electrochemical improvement. The optimum value was obtained at Zn–Al–7Sn–Ti–0.3V–S for as-coated and Zn–Al–7Sn–Ti–0.3V–S at 400 �C for the thermal-aged samples. The stabilities in hardness and corrosion resistance against the working substrate were attributed to the formation of coherent and uniform precipitation in the metal lattice

Item Type:	Article
Uncontrolled Keywords:	Composite-reinforcement Chemical interaction Microstructures Co-deposition Thermal treatment Wear
Subjects:	T Technology > T Technology (General) T Technology > TJ Mechanical engineering and machinery
Divisions:	Faculty of Engineering, Science and Mathematics > School of Engineering Sciences
Depositing User:	Mrs Hannah Akinwumi
Date Deposited:	05 Sep 2016 13:45
Last Modified:	05 Sep 2016 13:45
URI:	http://eprints.covenantuniversity.edu.ng/id/eprint/7105

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