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1篇 您的检索式:作者名="A.Rajendra"
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1A Comparative Study on the Corrosion Behaviour of Hard Anodic Coatings on AA 6061 Obtained Using DC and Pulsed DC Power Sources显示文摘The corrosion behaviour of the hard anodic coatings prepared by three diferent methods viz.,conventional hard anodizing(C-HA),pulse hard anodizing(P-HA)and low voltage room temperature pulse hard anodizing(LVPHA)on AA 6061 was compared using electrochemical impedance spectroscopy(EIS)and linear polarisation.Scanning electron microscope(SEM)was used to study the surface morphology before and after corrosion.EIS data revealed that no signifcant diference in corrosion resistance was observed among three types.Rp,Icorrand Ecorrwere found to be highly stable over the exposure period up to 72 h which confrms the excellent corrosion resistance.The studies indicate that the corrosion resistance of LVP-HA and P-HA,which are processed at lower voltage and at relatively higher temperatures,are comparable to that of C-HA which is processed at sub-zero temperatures and high operating voltages.The corrosion resistance of all coatings was found to be improved after hydrothermal sealing.Franco M. Hari Krishna T. Anju M.Pillai A.Rajendra A.K.Sharma 2013Acta Metallurgica Sinica(English Letters)2013,26,6:1
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