Study of Garlic Extract as a Green Corrosion Inhibitor for Mild Steel in Acidic Media

Abstract:

This paper studies extract as corrosion inhibitors extracted from garlic. The IR spectrum analysis of the extract shows that the main ingredient of extract is amino acids, and the better extracting condition is that 30°C50mL 10%H₂SO₄and 20g peeled garlic react for 120.0h, and composite amino acids content in the extract is 19.0mg/L. The result of corrosion inhibition performance using static weight loss shows that the dosage of the extract, temperature and concentration of acidic mediums have effect on corrosion inhibition remarkably. The corrosion inhibitive efficiency for A3 steel is 93.26% in 5% Hydrochloric acid and 79.2% in5% mud acid when the dosage of the garlic extract is 4.0%(V/V) and 6.0%(V/V),respectively. The investigated results of electrochemistry performance of the extract indicates that corrosion potential of A3 steel shift in negative direction both in Hydrochloric acid and in mud acid, which indicates that the extract are inhibitors of inhibiting cathodic corrosion, and circular-arc radius of alternating-current impedance spectroscopy increase notably in acidic medium, and corrosion inhibition effect is remarkable. Therefore, it is feasible to extract inhibitors from garlic.

• Periodical: Advanced Materials Research (Volumes 960-961)
• Pages: 118-125
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.960-961.118
• Online since: June 2014
• Authors: Bo Yang, Wu Chen*, Dan Hua Mu
• Keywords: Corrosion Inhibitive Performance Evaluation, Corrosion Inhibitor, Electrochemical Techniques, Garlics

References

[1] YingchuTao. A new type steel pickling inhibitor (LK45 phytic acid extract) for cleaning scale of boiler[J]. Materials Protection, 1987, 28(4): 26-30(In Chinese).

[2] Zhihu Guo，Heqing Tan. Inhibitive Effects of Extracts of Some Plants on the Corrosion of Carbon Steel[J]. Materials Protection, 1989, 22(2): 9-12(In Chinese).

[3] Zheng Lin. On Effects of Some Plant Corrosive Inhibitorson Cathodic Polarization of Steel[J]. Journal of Fuzhou University(Natural Science), 1999, 27(4): 108-110(In Chinese).

[4] Wanyou Zhang, ，Yuefang Chen，XunLi. Inhibitive Effect of Some Natural-occuring Substance on Dissolution of A3 Steel in HCl Solution[J]. North China electric power, 2002, 1: 9-15(In Chinese).

[5] Zheng Liu, Gen liang Xiong. Preparation and application of plant inhibitors. Corrosion and Protection, 2003, 24(4): 146-149(In Chinese).

[6] Xiu-zhou Lin, Min Gong, Jianping Wu. Study about use of abstracted oil from plant scrap as corrosion-inhibitor for hydrochloric acid cleaning. Corrosion science and protection technology, 2006, 18(3) : 222-225(In Chinese).

[7] Yan Li, Peng Zhao, Baorong Hou. Corrosion inhibition of mild steel by goldthread extractive in 1mol/L HCl solutions. Corrosion science and protection technology, 2006, 18(1)：1-3(In Chinese).

[8] Xiang-Hong Li，Shu-Duan Deng，Hui Fu. Inhibition by Jasminum nudiflorum Lindl leaves extract of the corrosion of cold rolled steel in hydrochloric acid solution. J Appl Electrochem, 2010, 40: 1641–1649(In Chinese).

DOI: 10.1007/s10800-010-0151-5

[9] R M Salch. Corrosion inhibition by naturally occurring substances: The effect aqueous extracts of some leaves and fruit peels on the corrosion of steel Al， Zn and Cu in acid [J]. British Corrosion Journal，1982, 17(3): 131-136(In Chinese).

DOI: 10.1179/000705982798274345

[10] I H Farooqi，A Hussain，M A Quraishi, et a1. Study of low cost ecofriendly compounds as corrosion inhibitors for cooling systems [J] . Anticorrosion Methods and Materials，1999，46(50) : 328-331.

DOI: 10.1108/00035599910295508

[11] K P Vinod Kumar，M. Sankara Narayanan Pillai，G. Rexin Thusnavis. Green corrosion inhibitor from seed extract of Areca catechu for mild steel in hydrochloric acid medium[J]. J Mater Sci, 2011, 46: 5208–5215.

DOI: 10.1007/s10853-011-5457-0

[12] A Minhale . The effect aqueous extracts of some leaves and fruit peels on the corrosion of steel in acid[J]. Corrosion Prevent ion and Control 1999, 4 : 32-35.

[13] G. Matamala. Comparison of steel anticorrosive protection formulated with natural tannins extracted from acacia and from pine bark[J] . Corrosion Science，2000, 42: 1351-1356.

DOI: 10.1016/s0010-938x(99)00137-7

[14] S Martinez，Stadjar I. Correlation between the molecular structure and the corrosion inhibition efficiency of chestnut tannin in acidic solutions[J]. Journal of Molecular Structure，2003, 640: 167-171.

DOI: 10.1016/j.theochem.2003.08.126

[15] YingHan, Weidong Run . Preparation of corrosion inhibitor from wild natural plant[J]. Chemical Engineer. 1994, 5: 48(In Chinese).

[16] Guanghua Zhang, Yang Li. Research on picking inhibitor made by hydrolysis of papeseed cake[J]. Fine Chemicals, 1996, 13(1) : 18.

[17] Hai-yan Du Xiao-hong, Peng, Yanfen, Zhang, Yan Gao. The process extraction amino acid from bean dregs and its corrosion mechanism. Anhui Chemical Industry, 2008, 34（3）: 35-37.

[18] The determination of free amino acids content in tea[S]. National standard of the People's Republic of China. GB/T8314-(2002).

[19] Performance test methods and evaluation indexes of Corrosion Inhibitor for Acidification[S], The People's Republic of China oil and gas industry standards SY/T 5405-(1996).

[20] Water quality standard and practice for analysis of oilfield injecting waters in clastic reservoirs [S], The People's Republic of China oil and gas industry standards SY/T 5329-(2012).

[21] Corrosion of metals and alloys—Removal of corrosion products from corrosion test specimens[S]. National standard of the People's Republic of China GB/T16545-(1996).

DOI: 10.3403/30346599