L-半胱氨酸/ZnO缓蚀剂对5A06铝合金在碱性溶液中耐腐蚀性能的影响
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摘要
为了降低铝阳极材料的自腐蚀速率及成本,选用防锈铝合金5A06作为铝空气电池阳极材料,研究L-半胱氨酸/ZnO复合缓蚀剂对5A06铝合金在4.00 mol/L NaOH溶液中电化学性能的影响。结果表明:L-半胱氨酸/ZnO复合缓蚀剂明显降低了5A06铝合金的自腐蚀速率,且该合金作为阳极的铝空气电池在NaOH/L-半胱氨酸/ZnO溶液中具有较高的电位及阳极利用率;L-半胱氨酸属于阴极型缓蚀剂,而ZnO属于成相型缓蚀剂。
In order to decrease the self-corrosion rate of aluminum anode materials,the influences of organic/inorganic hybrid inhibitor of L-cysteine/zinc oxide on the electrochemical property of 5 A06 aluminum alloy as anode material for aluminum air battery in 4. 00 mol/L solution was researched. Results showed that L-cysteine/ZnO hybrid inhibitor could significantly restrain the self-corrosion of the 5 A06 aluminum alloy,and the aluminum air battery with the aluminum anode alloy possessed the higher cell potential and anode utilization ratio in NaOH/L-cysteine/ZnO solution. Besides,L-cysteine belonged to the cathode-type corrosion inhibitor,whereas ZnO belonged to forming phase-type corrosion inhibitor.
In order to decrease the self-corrosion rate of aluminum anode materials,the influences of organic/inorganic hybrid inhibitor of L-cysteine/zinc oxide on the electrochemical property of 5 A06 aluminum alloy as anode material for aluminum air battery in 4. 00 mol/L solution was researched. Results showed that L-cysteine/ZnO hybrid inhibitor could significantly restrain the self-corrosion of the 5 A06 aluminum alloy,and the aluminum air battery with the aluminum anode alloy possessed the higher cell potential and anode utilization ratio in NaOH/L-cysteine/ZnO solution. Besides,L-cysteine belonged to the cathode-type corrosion inhibitor,whereas ZnO belonged to forming phase-type corrosion inhibitor.
引文
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[2]ZEIN A S,SALEH A O.Characterization of some aluminum alloys for application as anodes in alkaline batteries[J].JAppl Electrochem,2004,34:331-335.
[3]SUN Z G,LU H M,FAN L,et al.Performance of Al-air batteries based on Al-Ga,Al-In and Al-Sn alloy electrodes[J].J Electrochem Soc,2015,162:A2116-A2122.
[4]GUDIC S,SMOLJKO I,KLIS.The effect of small addition of tin and indium on the corrosion behavior of aluminum in chloride solution[J].J Alloy Compd,2010,505:54-63.
[5]ELANGO A,PERIASAMY V,PARAMASIVAM M.Study on polyaniline-Zn O used as corrosion inhibitors of 57S aluminum in 2 M Na OH solution[J].Anti Corros Methods Mater,2009,56:266-270.
[6]WANG J,WANG J,SHAO H,et al.The corrosion and electrochemical behaviour of pure aluminum in alkaline methanol solutions[J].J Appl Electrochem,2007,37:753-758.
[7]ABIOLA O K,OTAIGBE J O E.The effects of phyllanthus amarus extract on corrosion and kinetics of corrosion process of aluminum in alkaline solution[J].Corros Sci,2009,51(11):2 790-2 793.
[8]WANG J B,WANG J M,SHAO H B.The corrosion and electrochemical behavior of pure aluminum in additivecontaining alkaline methanol-water mixed solutions[J].Mater Sci,2009,60(4):269-273.
[9]黎新,胡立新,颜肖慈,等.脂肪族氨基酸对铝缓蚀机理的研究[J].材料保护,2000,33(5):3-4.
[10]杨标标,孙擎擎,孙睿吉,等.氨基酸对7B50铝合金在1 mol/L Na Cl+0.1 mol/L HCl溶液中缓蚀性能的影响[J].中国有色金属学报,2015,25(11):2 990-2 999.
[11]ZENG X X,WANG J M,WANG Q L,et al.The effects of surface treatment and stannate as an electrolyte additive on the corrosion and electrochemical performances of pure aluminum in an alkaline methanol-water solution[J].Mater Chem Phys,2010,121(3):459-464.
[12]JAFARIAN M,OLYAEI H M B,GOBAL F.Study of the alloying additives and alkaline zincate solution effects on the commercial aluminum as galvanic anode for use in alkaline batteries[J].Mater Chem Phys,2013,143(1):133-142.
[13]GELMAN D,LASMAN I,ELFIMCHEV S.Aluminum corrosion mitigation in alkaline electrolytes containing hybrid inorganic/organic inhibitor system for power sources applications[J].J Power Sources,2015,285:100-108.
[14]王大鹏,高立新,张大全.碱性溶液中L-半胱氨酸对AA5052铝合金阳极缓蚀作用研究[J].中国腐蚀与防护学报,2015,35(4):311-316.
[15]LI Y D,ZHAO P Z,LI S M.Optimization for anodizing conditions of 5A06 aluminum alloy based on doehlert design matrix method[J].Materials Science Forum,2017,877:498-507.
[16]LIANG F,LU H M,LENG J.Performance of fine structured aluminum anodes in neutral and alkaline electrolytes for Al-air batteries[J].Electrochimica Acta,2015,165:22-28.
[17]MA J L,WEN J B,LI Q A.Corrosion analysis of Al-ZnIn-Mg-Ti-Mn sacrificial anode alloy[J].J Alloy Compd,2010,496(1/2):110-115.
[18]MOUTARLIER V,GIGANDET M P,NORMAND B,et al.EIS characterisation of anodic films formed on 2024 aluminum alloy in sulphuric acid containing molybdate or permanganate species[J].Corros Sci,2005,47:937-951.