Corrosion Inhibition of Honeycomb Waste Extracts for 304 Stainless Steel in Sulfuric Acid Solution

被引：20
|
作者：
Gapsari, Femiana [1 ]
Madurani, Kartika A. [2 ]
Simanjuntak, Firman Mangasa [3 ]
Andoko, Andoko [4 ]
Wijaya, Hastono [1 ]
Kurniawan, Fredy [2 ]
机构：
[1] Brawijaya Univ, Dept Mech Engn, Lab Metrol Ind, Fac Engn, Malang 65145, Indonesia
[2] Inst Teknol Sepuluh Nopember, Dept Chem, Lab Instrumentat & Analyt Sci, Fac Sci, Surabaya 60111, Indonesia
[3] Tohoku Univ, Adv Inst Mat Res, WPI, Sendai, Miyagi 9808577, Japan
[4] State Univ Malang, Dept Mech Engn, Fac Engn, Malang 65145, Indonesia
来源：
MATERIALS | 2019年 / 12卷 / 13期
关键词：
inhibitor; honeycomb waste; 304 stainless steel; corrosion; electrochemical; MILD-STEEL; CARBON-STEEL; HCL; BEHAVIOR; LIGNIN;
D O I：
10.3390/ma12132120
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The extract of honeycomb waste was studied as a corrosion inhibitor on 304 stainless steel in H2SO4 solutions. The honeycomb waste was obtained from beekeeping at Lawang-Malang, East Java, Indonesia. Electrochemical and scanning electron microscopy methods were used to investigate the performance of the corrosion inhibition process. The inhibition efficiency of the inhibitor (2000 mg/L) reached 97.29% in 0.5 M H2SO4 and decreased with the acid concentration. Kinetic parameters were calculated to explain the effect of acid concentration on the inhibition process. The study on the adsorption behavior of the extracts followed the Frumkin isotherm model. The adsorption of the inhibitor on the 304 stainless steel surface was confirmed by the negative and lower values of Gibbs free energy. The obtained scanning electron microscopy (SEM) images were confirmed by comparing the surface of the specimens with and without inhibitor after corroding for one week. The results indicated that the extract acted as a good inhibitor for 304 stainless steel in acid corrosion.
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页数：15
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