Adsorption and corrosion inhibition performance of Tunbergia fragrans extract on mild steel in acid medium

被引：31
作者：
Muthukumarasamy, Kalaiselvi [1 ]
Pitchai, Sakunthala [2 ]
Devarayan, Kesavan [3 ]
Nallathambi, Lawrence [4 ]
机构：
[1] Bharathidasan Univ Constituent Arts & Sci Coll, Dept Phys, Tiruchirappalli 620009, Tamil Nadu, India
[2] Govt Arts & Sci Coll Women, Dept Chem, Orathanadu 614625, Tamil Nadu, India
[3] Tamil Nadu Dr J Jayalalithaa Fisheries Univ, Coll Fisheries Engn, Dept Basic Sci, Nagapattinam 611002, India
[4] St Josephs Coll, Dept Phys, Tiruchirappalli 620002, Tamil Nadu, India
来源：
MATERIALS TODAY-PROCEEDINGS | 2020年 / 33卷
关键词：
Tunbergia fragrans; Plant extract; Green inhibitor; Mild steel; Corrosion; IRON; HCL;
D O I：
10.1016/j.matpr.2020.06.533
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The present study describes the application of Tunbergia fragrans extract for inhibition of mild steel corrosion in hydrochloric acid medium. At first the inhibitor was extracted from the plant using ethanol to obtain the crude extract. This crude extract was added into the pickling solution of hydrochloric acid at different concentrations. Then the mild steel corrosion inhibition efficiency of the inhibitor was determined using weight loss method and electrochemical analysis. The results indicated that the plant extract inhibits the corrosion of the mild steel upto 81% in 1 M HCl. The weight loss data obeyed the Langmuir adsorption isotherm which suggested for predominant physical adsorption. Further, the interaction between the inhibitor and the mild steel surface were observed using scanning electron microscopy coupled with energy dispersive spectrum. (C) 2019 Elsevier Ltd. All rights reserved.
引用
收藏
页码：4054 / 4058
页数：5
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