CAJ | 학술논문

通过极化曲线、交流阻抗法等电化学测试方法,研究天冬氨酸和天冬酰胺2种氨基酸作为缓蚀剂在0.1 mol.L-1硫酸中对N80碳钢的缓蚀性能.研究结果表明：上述2种缓蚀剂在较低浓度的情况下均具有较好的缓蚀性能,天冬氨酸缓蚀效率最高达79.2%,而天冬酰胺缓蚀效率最高达81.8%,天冬酰胺结构上的酰基能够提供极性基团,在金属表面形成吸附薄膜,使其表现出更高的缓蚀效率;且缓蚀效率均随缓蚀剂浓度的增加而增大;2种缓蚀剂都属于阴极型缓蚀剂,且天冬酰胺的缓蚀效果更好.
통과겁화곡선、교류조항법등전화학측시방법,연구천동안산화천동선알2충안기산작위완식제재0.1 mol.L-1류산중대N80탄강적완식성능.연구결과표명：상술2충완식제재교저농도적정황하균구유교호적완식성능,천동안산완식효솔최고체79.2%,이천동선알완식효솔최고체81.8%,천동선알결구상적선기능구제공겁성기단,재금속표면형성흡부박막,사기표현출경고적완식효솔;차완식효솔균수완식제농도적증가이증대;2충완식제도속우음겁형완식제,차천동선알적완식효과경호.
The inhibition effect of D-Aspartic Acid and L-Asparagine on the corrossion of N80 steel in sulfric acid solution(0.1 mol · L-1) was investigated using polarization techniques and celectrochemical impedence(EIS).The study showed that the inhibitiors had promising corrossion inhibition efficiency at low concentration,the inhibition efficiency of D-Aspartic Acid reached 79.2 % and the inhibition efficiency of L-Asparagine reached 81.8 %,the acyl group of the structure of L-Asparagine could provide polar group that could form thin form to put up the higher inhibition efficiency.The inhibition efficiency(IE,%) increased with the concentration of inhibitors increasing.L-Asparagine acid was more efficient than D-Aspartic acid,and polarization curves revealed that inhibitors were all negative type of inhibitors.