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Characterization of WC-Co coatings corrosion product by raman spectroscopy

Kamdi, Zakiah and Voisey, K. T. (2014) Characterization of WC-Co coatings corrosion product by raman spectroscopy. In: International Conference on X-Ray & Related Technique in Research and Industry (ICXRI2014), 11-13 August 2014 , Johor Bahru, Johor.

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Abstract

In cermet coating such as WC-based coating, the coexisting of ceramic and metal results in micro-galvanic corrosion due to different corrosion potential of each element. In this study, WC-17wt%Co was used. The corrosion behaviour of the coating was evaluated by potentiodynamic test in two different electrolyte which are 0.5 M sulphuric acid and 3% by weight alkaline drilling fluid. This coating shows higher corrosion potential in acid electrolyte compares to in alkaline electrolyte. Clear passivation is seen for both cases. Raman shift is able to detect W03 and W03H20 as a corrosion product after corrosion test.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: corrosion; WC; Raman shift
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA401-492 Materials of engineering and construction. Mechanics of materials
Divisions: Faculty of Mechanical and Manufacturing Engineering > Department of Materials Engineering and Design
Depositing User: Normajihan Abd. Rahman
Date Deposited: 09 Nov 2014 07:41
Last Modified: 09 Nov 2014 07:41
URI: http://eprints.uthm.edu.my/id/eprint/5881
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