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Corrosion behaviour of WC-VC-Co hardmetals in acidic media

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dc.contributor.author Konadu, DS
dc.contributor.author Van der Merwe, J
dc.contributor.author Potgieter, JH
dc.contributor.author Potgieter-Vermaak, S
dc.contributor.author Machio, Christopher N
dc.date.accessioned 2011-05-09T14:27:35Z
dc.date.available 2011-05-09T14:27:35Z
dc.date.issued 2010-09
dc.identifier.citation Konadu, DS, Van der Merwe, J, Potgieter, JH et al. Corrosion behaviour of WC-VC-Co hardmetals in acidic media. Corrosion Science, Vol. 52(9), pp 3118–3125 en_US
dc.identifier.issn 0010-938X
dc.identifier.uri http://www.sciencedirect.com/science?_ob=MImg&_imagekey=B6TWS-506W6T1-3-R&_cdi=5570&_user=958262&_pii=S0010938X10002787&_origin=gateway&_coverDate=09%2F30%2F2010&_sk=999479990&view=c&wchp=dGLbVlb-zSkzS&md5=582c7f46534a870828c9e194711e19d0&ie=/sdarticle.pdf
dc.identifier.uri http://hdl.handle.net/10204/4996
dc.description Copyright: 2010 Elsveir. This is the post print version of the work. The definitive version is published in Corrosion Science, Vol. 52(9), pp 3118–3125 en_US
dc.description.abstract The effect of increasing vanadium carbide (VC) content on the corrosion behaviour of tungsten carbide – 10 wt% cobalt hard metals was investigated in 1 M hydrochloric (HCl), and sulphuric (H2SO4) acids solutions. Increasing VC content makes the open circuit potential (OCP) in the test solutions more negative than the base alloy. Specimens exhibited pseudo passivation in all the test solutions. Increasing VC led to decreasing corrosion current density. However, the corrosion current densities during chronoamperometric tests were lower for 0 wt% VC. XRD and Raman spectroscopy showed that hydrated WO3 formed in the surface films of all specimens in hydrochloric acid (HCl), while hydrated vanadyl sulphate also formed for higher VC content specimens in sulphuric acid (H2SO4). en_US
dc.language.iso en en_US
dc.publisher Elsevier en_US
dc.relation.ispartofseries Workflow request;4379
dc.subject WC-Co en_US
dc.subject WC-VC-Co en_US
dc.subject Polarization en_US
dc.subject XRD en_US
dc.subject Raman spectroscopy en_US
dc.subject Corrosion science en_US
dc.subject Hardmetals en_US
dc.title Corrosion behaviour of WC-VC-Co hardmetals in acidic media en_US
dc.type Article en_US
dc.identifier.apacitation Konadu, D., Van der Merwe, J., Potgieter, J., Potgieter-Vermaak, S., & Machio, C. N. (2010). Corrosion behaviour of WC-VC-Co hardmetals in acidic media. http://hdl.handle.net/10204/4996 en_ZA
dc.identifier.chicagocitation Konadu, DS, J Van der Merwe, JH Potgieter, S Potgieter-Vermaak, and Christopher N Machio "Corrosion behaviour of WC-VC-Co hardmetals in acidic media." (2010) http://hdl.handle.net/10204/4996 en_ZA
dc.identifier.vancouvercitation Konadu D, Van der Merwe J, Potgieter J, Potgieter-Vermaak S, Machio CN. Corrosion behaviour of WC-VC-Co hardmetals in acidic media. 2010; http://hdl.handle.net/10204/4996. en_ZA
dc.identifier.ris TY - Article AU - Konadu, DS AU - Van der Merwe, J AU - Potgieter, JH AU - Potgieter-Vermaak, S AU - Machio, Christopher N AB - The effect of increasing vanadium carbide (VC) content on the corrosion behaviour of tungsten carbide – 10 wt% cobalt hard metals was investigated in 1 M hydrochloric (HCl), and sulphuric (H2SO4) acids solutions. Increasing VC content makes the open circuit potential (OCP) in the test solutions more negative than the base alloy. Specimens exhibited pseudo passivation in all the test solutions. Increasing VC led to decreasing corrosion current density. However, the corrosion current densities during chronoamperometric tests were lower for 0 wt% VC. XRD and Raman spectroscopy showed that hydrated WO3 formed in the surface films of all specimens in hydrochloric acid (HCl), while hydrated vanadyl sulphate also formed for higher VC content specimens in sulphuric acid (H2SO4). DA - 2010-09 DB - ResearchSpace DP - CSIR KW - WC-Co KW - WC-VC-Co KW - Polarization KW - XRD KW - Raman spectroscopy KW - Corrosion science KW - Hardmetals LK - https://researchspace.csir.co.za PY - 2010 SM - 0010-938X T1 - Corrosion behaviour of WC-VC-Co hardmetals in acidic media TI - Corrosion behaviour of WC-VC-Co hardmetals in acidic media UR - http://hdl.handle.net/10204/4996 ER - en_ZA


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