Effect of Sealing Treatment on Corrosion Resistance of Plasma-Sprayed NiCrAl/Cr2O3-8 wt.%TiO2 Coating
作者： Jingjing Zhang , Zehua Wang , Pinghua Lin , Wenhuan Lu , Zehua Zhou
DOI: 10.1007/S11666-010-9528-6
关键词: Energy-dispersive X-ray spectroscopy 、 Salt spray test 、 Scanning electron microscope 、 Metallurgy 、 Corrosion 、 Silicone resin 、 Coating 、 Epoxy 、 Conversion coating 、 Materials science
摘要: Plasma-sprayed ceramic coatings inherently contain pores and micro-cracks which is deleterious when performed in aggressive environment. Various methods were applied to the as-sprayed order improve corrosion resistance. In investigation of this study, plasma-sprayed NiCrAl/Cr2O3-8 wt.%TiO2 sealed by epoxy resin silicone resin, respectively. Coatings characterized scanning electron microscopy/energy dispersive spectroscopy (SEM/EDS), optical microscopy (OM) x-ray diffraction (XRD). The possible mechanism was discussed. results salt spray test electrochemical measurements indicated that after sealing treatment, porosity decreased obviously a compact layer formed protect coating from corrosion. proved be more effective than enhancing resistance used research.
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