摘要
在低碳钢/稀盐酸腐蚀体系中,测试了缓蚀剂六次甲基四胺(HA)对体系的缓蚀行为,并对HA和二乙基二硫代氨基甲酸钠(SDEDTC)的缓蚀行为进行了分析;从理论上导出了体系自腐蚀电位随温度变化的关系式和缓蚀剂类型的自腐蚀电位判据.研究结果表明:低碳钢缓蚀前、后自腐蚀电位的改变与温度的倒数成线性关系;HA为阳极型缓蚀剂,SDEDTC为混合型缓蚀剂,二者的吸附形式均为物理吸附,吸附热分别为-35 kJ/mol和-30 kJ/mol.
Inhibition behaviors of hexamine（HA） and sodiumdiethyldithiocabamate （SDEDTC） were tested in the system of mild steel/hydrochloric acid. The relation between the corrosion potential of the system and temperature, and the criteria for corrosion potentials of different corrosion-inhibitive types of inhibitors were derived theoretically. The experimental results show that the variation of mild steel corrosion potentials after adding inhibitors is linear with respect to the reciprocal of temperature. HA is an anodic type inhibitor, and SDEDTC is a mixed type inhibitor. Their adsorption forms are physical, and the adsorption heat reaches to -35 kJ/mol （HA） and -30kJ/mol （SDEDTC）, respectively.
出处
《西安交通大学学报》
EI
CAS
CSCD
北大核心
2005年第9期1035-1038,共4页
Journal of Xi'an Jiaotong University
基金
国家自然科学基金资助项目(5047103650071045).
关键词
低碳钢
自腐蚀电位
缓蚀剂
吸附热
mild steel
corrosion potential
inhibitor
adsorption heat
