Effect of ascorbic acid on mild steel dissolution in sulphuric acid solution investigated by electrochemical polarization and surface probe techniques

CORC > 金属研究所 > 中国科学院金属研究所

	Effect of ascorbic acid on mild steel dissolution in sulphuric acid solution investigated by electrochemical polarization and surface probe techniques
	E. E. Oguzie ; Y. Li ; F. H. Wang
刊名	Journal of Applied Electrochemistry
	2007
卷号	37 期号:10 页码:1183-1190
关键词	mild steel ascorbic acid chemisorption chelation surface morphology low-carbon steel corrosion inhibition phosphoric-acid adsorption extract media
ISSN号	0021-891X
中文摘要	The effect of ascorbic acid (AA) on the corrosion of mild steel in sulphuric acid solution has been investigated by open circuit potential (OCP) and polarization measurements. AA was observed to shift the OCP to more positive potentials with increasing concentration. The polarization curves revealed that AA inhibited the anodic metal dissolution reaction, although this effect became negligible at high anodic overpotentials. The trend of inhibition efficiency with concentration showed that efficiency increased rapidly at low concentrations, remained almost steady at intermediate concentrations and increased again at high concentrations. The mechanism of inhibition was considered in terms of initial chemisorption of AA according to the Temkin isotherm, followed by formation of chelate compounds with Fe2+ ions at high concentrations. EDS and AFM analyses of the electrode surface support the proposed inhibition mechanisms.
原文出处	://WOS:000249445600012
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/33765]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	E. E. Oguzie,Y. Li,F. H. Wang. Effect of ascorbic acid on mild steel dissolution in sulphuric acid solution investigated by electrochemical polarization and surface probe techniques[J]. Journal of Applied Electrochemistry,2007,37(10):1183-1190.
APA	E. E. Oguzie,Y. Li,&F. H. Wang.(2007).Effect of ascorbic acid on mild steel dissolution in sulphuric acid solution investigated by electrochemical polarization and surface probe techniques.Journal of Applied Electrochemistry,37(10),1183-1190.
MLA	E. E. Oguzie,et al."Effect of ascorbic acid on mild steel dissolution in sulphuric acid solution investigated by electrochemical polarization and surface probe techniques".Journal of Applied Electrochemistry 37.10(2007):1183-1190.