摘要
基于环保及同时适用于多种金属材料工序间防锈的要求,研究了出一种由植酸、复合缓蚀剂等成分构成的工序间防锈液(pH 7-8)。大气环境暴露、叠片、腐蚀性实验等结果表明,经过防锈液处理的钢、铜、铝合金材料具有优良的工序间防锈性能;防锈液中的不同缓蚀剂成分对钢、铜、铝合金材料发挥协同防锈作用,是提高3种材料工序间防锈性能的关键。植酸、复合缓蚀剂等产生的协同效应促使钢表面形成致密均匀的吸附络合膜,其自腐蚀电位由-0.74 V正移到-0.08 V,腐蚀电流明显减小;铜、铝合金材料随工序间防锈处理时间的延长,表面的自腐蚀电位也明显正移,工序间防锈性能得到提高。
In view of the importance of environment-friendly inter-process antirust solution for various metals in engineering, a solution with the pH value about 7-8 that consists of phytie acid, compound inhibitor and so on was prepared. Atmospheric exposure, lamination and corrosion tests results show that steel, copper alloy and aluminum alloy treated with this solution exhibit excellent antirust property, which is mainly attributed to the synergistic effect of different corrosion inhibitors in the solution. Phytic acid and compound inhibitor play a synergistic role in the formation of the compact and uniform adsorption-complextion film on steel surface. And the self-corrosion potential of steel shifts from - 0. 74 V to - 0.08 V and the corrosion current is reduced evidently. In addition, the self-corrosion potentials of copper and aluminum alloys also increase obviously as the antirust treatment duration increases, which results in the improvement in antirust property.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2013年第6期147-152,共6页
Transactions of Materials and Heat Treatment
关键词
工序间防锈
复合缓蚀剂
多种金属
inter-process antirust
compound inhibitor
several metals
