| 铝合金在氯化铵溶液中的缓蚀研究 |
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| 引用本文： | 柳昌义,魏忠诚,高金华,赵世勇. 铝合金在氯化铵溶液中的缓蚀研究[J]. 山东大学学报(理学版), 1991, 0(4) |
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| 作者姓名： | 柳昌义 魏忠诚 高金华 赵世勇 |
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| 作者单位： | 山东大学化学系，山东大学化学系，山东大学化学系，山东大学化学系 1984年毕业生 |
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| 摘 要： | 借助于电化学方法和SEM技术研究了铝合金在氯化铵溶液中的阳极行为.所研制的铝合金较之纯铝具有明显的耐腐蚀效果,在加有少量(NH_4)_2CrO_4(C_2H_5)_4NBr或明胶作为缓蚀剂的NH_4Cl体系中,它们的耐蚀能力更强,阳极极化下的自放电速度很低,当电流密度为i_a=15～50mA/cm~2时,电极效率(η)可达99%;同时电极表面的孔蚀现象受到一定的抑制,腐蚀变得更均匀.
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| 关 键 词： | 铝合金 缓蚀剂 负差数效应 |
A STUDY OF CORROSION INHIBITION FOR ALUMINIUM AND ITS ALLOY IN NH C1 SOLUTIONS |
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| Liu Changyi,Wei Zhongcheng,Gao Jinhua and Zhao Shiyong. A STUDY OF CORROSION INHIBITION FOR ALUMINIUM AND ITS ALLOY IN NH C1 SOLUTIONS[J]. Journal of Shandong University, 1991, 0(4) |
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| Authors: | Liu Changyi Wei Zhongcheng Gao Jinhua Zhao Shiyong |
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| Abstract: | Pure aluminium and five alloy as negative electrode material have been studied by electrochemical technique and SEM observation. The results showed that the inhibition effects of these alloys in NH_4Cl solutions were much better than pure Al. Al alloy electrode had a lower self-discharge rate under anodic polarization conditions and a longer wetting storage life than pure Al electrode. Its electrode efficiency was high to 99% over a range of current density from 15 to 50 mA/cm~2 in 1 mol/L NH_4Cl-0.001 mol/L (NH_4)_2CrO_4-0.001 mol/L (C_2H_5)_4NBr or 1 mol/L NH_4Cl-0.2ppm gelatine solutions. The pitting corrosion of the electrode was inhibited by these inhibitors above |
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| Keywords: | aluminium alloy inhibitor negative difference effect |
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