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CAO Jing-jing, MA Ai-bin, WANG Qiu-yue, JIANG Jing-hua, CHEN Jian-qing, ZHOU Qi. Corrosion Resistance of a New Low-carbon High-strength Wear-resistant Cast Steel NMZ1[J]. Corrosion & Protection, 2011, 32(1): 6-11.
Citation: CAO Jing-jing, MA Ai-bin, WANG Qiu-yue, JIANG Jing-hua, CHEN Jian-qing, ZHOU Qi. Corrosion Resistance of a New Low-carbon High-strength Wear-resistant Cast Steel NMZ1[J]. Corrosion & Protection, 2011, 32(1): 6-11.
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Corrosion Resistance of a New Low-carbon High-strength Wear-resistant Cast Steel NMZ1

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  • Received Date: June 09, 2010
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  • The corrosion behavior of a new wear-resistant cast marine steel NMZ1 with low carbon and high silicon was investigated in simulated sea-water by means of immersion test and corrosion-surface-morphology observation. The corrosion resistance had been evaluated by comparing the weight-loss with that of 20Cr5Cu for centrifugal pump impeller and Q345 for slurry pipeline. The results showed that sea-water corrosion resistance of NMZ1 was superior to that of Q345 but inferior to that of 20Cr5Cu. The corrosion rate of NMZ1 was 0.1215 mm/a in the 3.5% (wt) NaCl solution, which was about 2/3 of Q345 and 1.5 times of 20Cr5Cu. Alloying elements of NMZ1 could improve the protection of surface products and inhibit the occurrence of pitting, thus the alloy obtained a lower corrosion rate with uniform corrosion morphology.
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    • References (10)
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