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摘要:低碳钢含碳量在0.001至0.003，其强度和硬度也较低，但是可塑性和韧性较好。低碳钢又叫软钢，因此，可以用来进行各种加工,如锻造, 焊接和切削, 常用于制造链条, 铆钉, 螺栓, 轴等。目前低碳钢已广泛应用于生产、生活各方面。但由于低碳钢在各种环境下耐蚀性能较差，限制了它的应用。本文针对铁素体低碳钢在0.5mol/L硫酸的情况下进行电化学技术研究,采用线性电势扫描法分别研究0.5mol/L硫酸中含氧和不含氧时的低碳钢腐蚀性能,观察和比较它们的腐蚀速度,以及在同溶液中加入缓蚀剂后低碳钢的腐蚀状况,得出结果,并为后续改良工艺提供理论依据和指导生产。38637
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毕业论文关键词：低碳钢；电化学腐蚀；动电位极化曲线；缓蚀剂
DissolVed oxygen condition research of corrosion inhibitor for low carbon steel corrosion resistance
Abstract:Low carbon content in 0.001 to 0.003, its strength and hardness is low, but the plasticity and toughness is better. Low carbon steel is also called mild steel. Therefore, it can be used for all kinds of processing, such as forging, welding and cutting, often used in the production chain, riVet, bolts, shaft, etc. The current low carbon steel has been widely used in production, all aspects of life. But as a result of low carbon steel under Various enVironmental corrosion resistant performance is poorer, limits its application. Ferrite, the author of this paper under the condition of low carbon steel in 0.5 mol/L sulfuric acid of electrochemical technology research, using the linear potential scanning method, we research 0.5 mol/L oxygen and without oxygen in sulfuric acid of low carbon steel corrosion, obserVe and compare the corrosion rate of them, and after adding corrosion inhibitor with solution of low carbon steel corrosion condition, As for the results, as to proVide theoretical basis for subsequent improVement process and to guide the production
KeyWords: mild steel; electrochemical corrosion; potentiodynamic polarizatipn curves; Corrosion inhibitor
目录
1 前言 1
1.1 研究目的意义 1
1.2 文献综述 2
1.2.1 低碳钢的腐蚀概念 2
1.3 低碳钢腐蚀的研究进展以及研究方式 3
1.3.1 缓蚀剂的分类 4
1.3.2 失重法研究 5
1.3.3 动电位极化法研究 5
1.3.4 电化学交流阻抗研究 5
1.3.5 俄歇电子能谱学研究 6
1.3.6 椭圆偏振法测试 6
1.3.7 电化学噪声监测 6
2 实验部分 7
2.1 实验原理 7
2.2 实验仪器与药品 7
2.2.1 实验仪器 7
2.2.2 实验药品 7
2.3实验步骤 7
2.3.1 电极制备 7
2.3.2 电极处理 7
2.3.3.极化曲线测量 8
3 分析与讨论 9
3.1 低碳钢在除氧酸中的缓蚀性研究 9
3.1.1 除氧后低碳钢在不同温度下的硫酸酸中的腐蚀情况（空白实验） 9
3.1.2 改变缓蚀剂浓度在25℃温度下低碳钢在除氧的硫酸溶液中的腐蚀情况 10
3.1.3 改变缓蚀剂浓度在30℃温度下低碳钢在除氧的硫酸溶液中的腐蚀情况 11
3.1.4 改变缓蚀剂浓度在35℃温度下低碳钢在除氧的硫酸溶液中的腐蚀情况 12
3.1.5 改变缓蚀剂浓度在40℃温度下低碳钢在除氧的硫酸溶液中的腐蚀情况 13
3.1.6 改变缓蚀剂浓度在45℃温度下低碳钢在除氧的硫酸溶液中的腐蚀情况 14