Konadu, DSVan der Merwe, JPotgieter, JHPotgieter-Vermaak, SMachio, Christopher N2011-05-092011-05-092010-09Konadu, 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 3118–31250010-938Xhttp://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.pdfhttp://hdl.handle.net/10204/4996Copyright: 2010 Elsveir. This is the post print version of the work. The definitive version is published in Corrosion Science, Vol. 52(9), pp 3118–3125The 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).enWC-CoWC-VC-CoPolarizationXRDRaman spectroscopyCorrosion scienceHardmetalsArticleKonadu, 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/10204/4996Konadu, 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/10204/4996Konadu 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.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 -