铝含量对镍铝青铜合金耐盐水腐蚀的影响
Effect of Aluminum on the Corrosion Resistance of Nickel Aluminum Bronze Alloy in Saline Water
摘 要
采用电化学方法探究了镍铝青铜合金在3.5%（质量分数）NaCl溶液中的耐蚀性，并利用扫描电镜和能谱仪分析了腐蚀产物的形貌与元素组成。结果表明：镍铝青铜合金的耐蚀性随着浸泡时间的增加而增加，合金表面会形成氧化铝和氧化亚铜保护膜，保护内层金属基底。当铝的质量分数为9%时，合金材料具有最优的耐蚀性，此时材料表面形成了一层致密均匀的保护层，有效减缓了介质对合金的腐蚀。
动电位极化
耐蚀性
电化学交流阻抗
nickel aluminum bronze
potentiodynamic polarization
corrosion resistance
electrochemical impedance spectroscopy
Abstract
The corrosion resistance of nickel-aluminum bronze alloy in 3.5% (mass fraction) NaCl solution was investigated by electrochemical methods, and the morphology and elemental composition of corrosion products were analyzed by scanning electron microscopy and energy spectrum. The results showed that the corrosion resistance of the nickel-aluminum bronze alloy increased with the increase of immersion time, and a protective film of aluminum oxide and cuprous oxide was formed on the surface of the alloy to protect the inner metal substrate. When the mass fraction of aluminum was 9%, the alloy had the best corrosion resistance, and a dense and uniform protective layer was formed on the surface of this material, which effectively slowed the medium corrosion to the alloy.
中图分类号 TG174 DOI 10.11973/fsyfh-202011007
所属栏目 试验研究
基金项目
收稿日期 2018/12/15
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联系人作者辛钢(gxin@dlut.edu.cn)
引用该论文: JING Yuan,HUANG Xiaofei,YANG Rong,LI Mingfang,XIN Gang. Effect of Aluminum on the Corrosion Resistance of Nickel Aluminum Bronze Alloy in Saline Water[J]. Corrosion & Protection, 2020, 41(11): 43
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【5】WANG C X,JIANG C H,CHAI Z,et al. Estimation of microstructure and corrosion properties of peened nickel aluminum bronze[J]. Surface and Coatings Technology,2017,313:136-142.
【6】LUO Q,WU Z,QIN Z B,et al. Surface modification of nickel-aluminum bronze alloy with gradient Ni-Cu solid solution coating via thermal diffusion[J]. Surface and Coatings Technology,2017,309:106-113.
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【8】YUAN S J,PEHKONEN S O. Surface characterization and corrosion behavior of 70/30 Cu-Ni alloy in pristine and sulfide-containing simulated seawater[J]. Corrosion Science,2007,49(3):1276-1304.
【9】BADAWY W A,EL-RABIEE M M,HELAL N H,et al. Effect of nickel content on the electrochemical behavior of Cu-Al-Ni alloys in chloride free neutral solutions[J]. Electrochimica Acta,2010,56(2):913-918.
【10】MONTECINOS S,SIMISON S N. Influence of the microstructure on the corrosion behaviour of a shape memory Cu-Al-Be alloy in a marine environment[J]. Applied Surface Science,2011,257(7):2737-2744.
【11】HUTTUNEN-SAARIVIRTA E,RAJALA P,CARPÉN L. Corrosion behaviour of copper under biotic and abiotic conditions in anoxic ground water:electrochemical study[J]. Electrochimica Acta,2016,203:350-365.
【12】HUTTUNEN-SAARIVIRTA E,RAJALA P,BOMBERG M,et al. EIS study on aerobic corrosion of copper in ground water:influence of micro-organisms[J]. Electrochimica Acta,2017,240:163-174.
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【14】BADAWY W A,EL-RABIEI M M,NADY H. Synergistic effects of alloying elements in Cu-ternary alloys in chloride solutions[J]. Electrochimica Acta,2014,120:39-45.
【15】曹楚南,张鉴清. 电化学阻抗谱导论[M]. 北京:科学出版社,2002:21-24.
【16】UL-HAMID A,QUDDUS A,DAFALLA H,et al. Electrochemical deposition of Ni on an Al-Cu alloy[J]. Journal of Materials Engineering and Performance,2012,21(2):213-221.
【17】BADAWY W A,EL-RABIEI M M,NADY H. Synergistic effects of alloying elements in Cu-ternary alloys in chloride solutions[J]. Electrochimica Acta,2014,120:39-45.
【18】MA A L,JIANG S L,ZHENG Y G,et al. Corrosion product film formed on the 90/10 copper-nickel tube in natural seawater:composition/structure and formation mechanism[J]. Corrosion Science,2015,91:245-261.
【19】FAN J H,TANG D D,WANG D H. Spontaneous growth of CuO nanoflakes and microflowers on copper in alkaline solutions[J]. Journal of Alloys and Compounds,2017,704:624-630.
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