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08668 Effects of Slurry pH on the Surface Mechanical Properties and Erosion Corrosion Resistance

Product Number: 51300-08668-SG
ISBN: 08668 2008 CP
Author: Baotong Lu, Ke Wang, Xuemei Wan, and Jingli Luo
Publication Date: 2008
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$20.00
$20.00
Effects of anodic dissolution in corrosive slurries with different chemical compositions and pHs on the in-situ surface mechanical properties and slurry erosion-corrosion resistance of carbon steel were investigated. The experimental measurements indicate the existence of corrosion-enhanced erosion because the erosion is accelerated by the anodic current and it depends heavily on the slurry pH and chemistry. The in-situ nanoindentation shows that the presence of anodic current on the surface reduces the surface hardness. When the anodic current density was held unchanged, both the corrosion-enhanced erosion in acidic slurries and the corrosion-induced surface hardness degradation in the acidic solutions were much more pronounced than those in neutral and alkaline slurries/solutions. In the neutral and alkaline media, the corrosion-enhanced erosion and the in-situ surface hardness degradation were hardly affected by the chemical composition of aqueous media but a remarkable impact of chemical composition was observed when corrosive media are acidic.
Effects of anodic dissolution in corrosive slurries with different chemical compositions and pHs on the in-situ surface mechanical properties and slurry erosion-corrosion resistance of carbon steel were investigated. The experimental measurements indicate the existence of corrosion-enhanced erosion because the erosion is accelerated by the anodic current and it depends heavily on the slurry pH and chemistry. The in-situ nanoindentation shows that the presence of anodic current on the surface reduces the surface hardness. When the anodic current density was held unchanged, both the corrosion-enhanced erosion in acidic slurries and the corrosion-induced surface hardness degradation in the acidic solutions were much more pronounced than those in neutral and alkaline slurries/solutions. In the neutral and alkaline media, the corrosion-enhanced erosion and the in-situ surface hardness degradation were hardly affected by the chemical composition of aqueous media but a remarkable impact of chemical composition was observed when corrosive media are acidic.
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