|
|
|
| CORROSIVE EFFECT BY ALLYLTHIOUREA OF BULK NANOCRYSTALLINE INGOT IRON IN AMBIENT DILUTED ACIDIC SULPHATE SOLUTION |
| SHEN Changbin1, YANG Huaiyu2, WANG Shenggang3, LONG Kang2, WANG Fuhui2 |
1. School of Materials Science & Engineering, Dalian Jiaotong University, Dalian 116028
2. State Key Laboratory for Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016
3. Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016 |
|
|
|
|
Abstract In the corrosive solution 0.1 mol/L H2SO4+0.25 mol/L Na2SO4, the effect of allyl-thiourea (ATU) on the corrosion behaviors of bulk nanocrystalline ingot iron (BNII) was studied. Inhibited by ATU at ambient temperature, for CPII, when immersion time as short as 5 min, an inductive loop appeared at different concentrations at the Nyquist complex planes; for BNII, only a simple capacitance loop appeared in the Nyquist plot at the same period. With the elongation of the immersion time, for BNII, two time constants appeared in the Nyquist plot; For CPII, the impedance spectrum shows a slightly depressed semicircular shape.
|
|
Received: 18 March 2009
|
| [1] Bentiss F, Lebrini M, Lagrenee M.Thermodynamic characterization of metal dissolution and inhibitor adsorption processes in mild steel/2,5-bis(n-thienyl)-1,3,4-thiadiazoles/hydrochloric acid system [J]. Corros. Sci., 2005, 47(12): 2915-2931[2] Lukovits I, Shaban A, Kalman E. Thiosemicarbazides and thiosemicarbazones: non-linear quantitative structure-efficiency model of corrosion inhibition [J]. Electrochim. Acta, 2005, 50(20): 4128-4133[3] Baddini Q, Cardoso S, Hollauer E, et al. Statistical analysis of a corrosion inhibitor family on three steel surfaces (duplex, super-13 and carbon) in hydrochloric acid solutions [J]. Electrochim. Acta,2007, 53(2): 434 -446[4] Thompson I, Campbell D. Interpreting Nyquist responses from defective coatings on steel substrates [J].Corros. Sci., 1994, 36(1): 187-198[5] Wang S G, Shen C B, Long K, et al. The electrochemical corrosion of bulk nanocrystalline ingot iron in acidic sulphate solution [J]. J. Phys. Chem.,2006, 110B: 377-382[6] Pardo A, Otero E, Merino M C, et al. The influence of Cr addition on the corrosion resistance of Fe73.5Si13.5B9Nb3-Cu1 metallic glass in marine environments [J]. Corros. Sci., 2002, 44(6): 1193-1211[7] Wang S G, Long K, Long Q W. Refinement of pure iron grain by severe rolling technology [J]. Acta Metall. Sin., 2003, 39: 1247-1250 (王胜刚, 龙康, 龙期威. 深度轧制细化工业纯铁晶粒 [J]. 金属学报,2003, 39: 1247-1250)[8] Lopez M, Arce M. Characterization of Co-Cu mechanical alloys by linear sweep voltammetry [J]. Electrochim. Acta, 1997, 42(1): 61-65[9] Shen C B, Wang S G, Yang H Y, et al. Electrochemical corrosion behavior of bulk nanostructured industrial pure iron in hydrochloric acid solution [J]. Mater. Sci. Technol., 2006, 14(3), 316-319 (沈长斌, 王胜刚, 杨怀玉等. 块体纳米晶工业纯铁在盐酸溶液中的电化学腐蚀行为[J]. 材料科学与工艺, 2006, 14(3), 316-319)[10] Shen C B, Wang S G, Long K, et al. Corrosion inhibition of bulk nanocrystallized industrial pure iron by thiourea in HCl [J]. Acta Phys-Chem. Sin., 2004, 20(6), 664-667 (沈长斌, 王胜刚, 杨怀玉等. 硫脲对纳米晶工业纯铁在盐酸溶液中的缓蚀行为 [J]. 物理化学学报, 2004, 20(6), 664-667)[11] Cao C N, Zhang J Q. The Introduction to Electrochemical Impedance Spectrum [M]. Beijing:Science Press, 2002: 135 (曹楚南, 张鉴清. 电化学阻抗谱导论 [M]. 北京: 科学出版社, 2002: 135)[12] Tan Y J, Bailey S, Kinsella B. An investigation of the formation and destruction of corrosion inhibitor films using electrochemical impedance spectroscopy (EIS) [J]. Corros. Sci., 1996, 38(9): 1545-1561 |
| No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
|
