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Corrosion Behavior of Thermally Sprayed NiCrBSi Coating on 16MnR Low-Alloy Steel in KOH Solution
Zeng, Q.; Sun, J.; Emori, W.; Jiang, S. L.; Jiang, SL (reprint author), Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China.
2016-05-01
发表期刊JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
ISSN1059-9495
卷号25期号:5页码:1773-1780
摘要NiCrBSi coatings were selected as protective material and air plasma-sprayed on 16MnR low-alloy steel substrates. Corrosion behavior of 16MnR substrates and NiCrBSi coatings in KOH solution were evaluated by polarization resistance (R (p)), potentiodynamic polarization curves, electrochemical impedance spectroscopy, and immersion corrosion tests. Electrolytes were solutions with different KOH concentrations. NiCrBSi coating showed superior corrosion resistance in KOH solution compared with the 16MnR. Corrosion current density of 16MnR substrate was 1.7-13.0 times that of NiCrBSi coating in the given concentration of KOH solution. By contrast, R (p) of NiCrBSi coating was 1.2-8.0 times that of the substrate, indicating that the corrosion rate of NiCrBSi coating was much lower than that of 16MnR substrate. Capacitance and total impedance value of NiCrBSi coating were much higher than those of 16MnR substrate in the same condition. This result indicates that corrosion resistance of NiCrBSi coating was better than that of 16MnR substrate, in accordance with polarization results. NiCrBSi coatings provided good protection for 16MnR substrate in KOH solution. Corrosion products were mainly Ni/Fe/Cr oxides.
部门归属[zeng, q. ; emori, w. ; jiang, s. l.] chinese acad sci, inst met res, key lab nucl mat & safety assessment, shenyang 110016, peoples r china ; [zeng, q. ; sun, j.] shenyang ligong univ, sch environm & chem engn, shenyang 110159, peoples r china
关键词16mnr Aps Corrosion Koh Nicrbsi Coating
学科领域Materials Science
收录类别sci
语种英语
文献类型期刊论文
条目标识符http://ir.imr.ac.cn/handle/321006/75889
专题中国科学院金属研究所
通讯作者Jiang, SL (reprint author), Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China.
推荐引用方式
GB/T 7714
Zeng, Q.,Sun, J.,Emori, W.,et al. Corrosion Behavior of Thermally Sprayed NiCrBSi Coating on 16MnR Low-Alloy Steel in KOH Solution[J]. JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE,2016,25(5):1773-1780.
APA Zeng, Q.,Sun, J.,Emori, W.,Jiang, S. L.,&Jiang, SL .(2016).Corrosion Behavior of Thermally Sprayed NiCrBSi Coating on 16MnR Low-Alloy Steel in KOH Solution.JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE,25(5),1773-1780.
MLA Zeng, Q.,et al."Corrosion Behavior of Thermally Sprayed NiCrBSi Coating on 16MnR Low-Alloy Steel in KOH Solution".JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE 25.5(2016):1773-1780.
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