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- 下一篇：碱性条件下铝缓蚀剂的开发研究
摘要添加缓蚀剂是工业上常用的有效防止金属腐蚀的方法。苯并三氮唑（BTA）、乌洛托品、NaNO2、硫脲是常见的缓蚀剂，本研究采用重量法研究了四种缓蚀剂及它们的复配药剂在酸性条件下对铝的缓蚀性能。研究结果表明这些缓蚀剂都具有较好的缓蚀性能，BTA、乌洛托品、NaNO2及硫脲的最佳投加量分别为20mg/L，300mg/L，50mg/L及1000mg/L；复合缓蚀剂的缓蚀性能较单一缓蚀剂有所提高。其中，硫脲作为铝的缓蚀剂，化学性质更稳定，相对安全，缓蚀效率也较高，因此推荐作为基础缓蚀剂用于工业防腐。63811
毕业论文关键词 铝 缓蚀剂 盐酸 重量法
毕业设计说明书（论文）外文摘要
Title Development of Aluminum Corrosion Inhibitor Under Acidic Conditions
Abstract
Using inhibitor is a general and effective method to protect metal from corrosion in industry. Benzotriazole (BTA), hexamethylenetetramine, NaNO2, thiourea are common corrosion inhibitors. In this paper, the corrosion inhibition efficiency of the single inhibitor and their composite inhibitors for aluminum under acidic conditions were studied by gravimetric analysis. The results indicated that these inhibitors have good inhibition performance, and the optimum dosage was 20mg/L, 300mg/L, 50mg/L and 1000mg/L for BTA, hexamethylenetetramine, NaNO2 and thiourea, respectively. Composite corrosion inhibitors showed better performance than the single corrosion inhibitor. Among them, thiourea as a corrosion inhibitor of aluminum, it shows more stable and safe chemical properties and higher inhibition efficiency. Hence, it is recommended as the basis corrosion inhibitor for industrial use.
Keywords Aluminum Corrosion inhibitor Hydrochloric acid Gravimetric analysis
目 次
1 绪论 1
1.1 缓蚀剂简介及应用 1
1.2 缓蚀剂的缓蚀机理 1
1.2.1 缓蚀剂的电化学机理 2
1.2.2 缓蚀剂的物理化学机理 2
1.3 缓蚀剂的主要类型 3
1.4 铝的缓蚀剂 4
1.5 本研究的意义及主要内容 5
2 实验部分 6
2.1 单一缓蚀剂的缓蚀性能实验 6
2.1.1 实验模拟水质 6
2.1.2 实验原理 6
2.2 仪器和设备 6
2.2.1 实验药品 6
2.2.2 实验仪器 7
2.3 实验用药品储备液 8
2.4 实验步骤 9
2.5 结果表示和计算 10
2.5.1 腐蚀率X1（mm/h）的计算 10
2.5.2 缓蚀率X2（％）的计算 10
2.6 复合缓蚀剂的缓蚀性能实验 10
3 实验结果和分析 11
3.1. 空白实验的腐蚀率