Plant derived cationic dye as an effective corrosion inhibitor for 7075 aluminum alloy in 3.5% NaCl solution

Lawsonia inermis also known as henna was studied as a corrosion inhibitor for aluminum alloy in seawater. The inhibitor has been characterized by optical study via Fourier transform infrared spectroscopy (FTIR). The FTIR proves the existence of hydroxyl and carbonyl functional groups in Lawsonia inermis. Aluminum alloy 5083 immersed in seawater in the absence and presence of Lawsonia inermis was tested using electrochemistry method, namely, electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization (PP). EIS and PP measurements suggest that the addition of Lawsonia inermis has caused the adsorption of inhibitor on the aluminum surface. The adsorption behavior of the inhibitor follow Langmuir adsorption model where the value of free energy of adsorption, -ΔG, is less than 40 kJ/mol indicates that it is a physical adsorption. Finally, it was inferred that Lawsonia inermis has a real potential to act as a corrosion inhibitor for aluminum alloy in seawater.

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“…In the anodic half-cell reaction, the dissolution of aluminum takes place according to the following equation [49][50][51]:…”

Section: Electrochemical Impedance Spectroscopy (Eis)mentioning

confidence: 99%

The Effect of Concentration of Lawsonia inermis as a Corrosion Inhibitor for Aluminum Alloy in Seawater

Zulkifli

Ali

Yusof

et al. 2017

Advances in Physical Chemistry

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“…A through literature survey reveals that most of the inhibitors act by adsorption onto the metal surface which takes place through heteroatoms such as N, O, P and S atoms, triple bonds or p electrons of aromatic rings which tend to form stronger coordination bonds. Several nitrogen, oxygen, and sulphur containing heterocyclic compounds such as benzoxazoles [3], benzothiazole derivatives [4], benzimidazoles derivatives [5], triazines [6], pyrazole derivatives [7], pyrimidines derivatives [8], thiosemicarbazones [9], thiophenederivatives [10], thiourea derivatives [11], and quinoxaline derivatives [12] have been reported as good corrosion inhibitors. Literature survey shows that anti corrosive performance of quinazolinones is scanty and benzooxazinones have not been studied, in our knowledge, as mild steel corrosion inhibitors in sulphuric acid medium.…”

Section: Introductionmentioning

confidence: 99%

Dry and wet lab analysis on benzofused heterocyclic compounds as effective corrosion inhibitors for mild steel in acidic medium

Hemapriya¹,

Prabakaran

Parameswari³

et al. 2016

Journal of Industrial and Engineering Chemistry

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“…Some literature studies have shown that various alkaloid corrosion inhibitors are widely used to prevent the dissolution of aluminum and its alloys in alkaline and chloride solution. The corrosion inhibition of pyridine for aluminum in 1 M NaOH solution [56], berberine namely 5,6-dihydro-9,10-dimethoxybenzo[g]-1,3benzodioxolo[5,6-a]quinolizinium for 7075 aluminum alloy in 3.5% NaCl solution [57,58], sparteine, lupanine and multiflorine for 7075-T6 aluminum alloy in 0.5 M NaCl solution [59] has been evaluated by weight loss, potentiodynamic polarization and EIS techniques. It is found that they are mixed type inhibitors in the studied conditions.…”

Section: Aluminum and Their Alloys Inhibitormentioning

confidence: 99%

Anti-Corrosive Properties of Alkaloids on Metals

Zhang¹,

Wu²

2019

Alkaloids - Their Importance in Nature and Human Life

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Numerous organic inhibitors have been reported to be used for the corrosion inhibition of various metals, especially, the heterogeneous ring compounds bearing larger electronegativity atoms (i.e., N, O, S, and P), polar functional groups, and conjugated double bonds are the most effective inhibitors. Based on the concept of green chemistry, in recent years, the research of corrosion inhibitor has gradually extracted new environment-friendly corrosion inhibitor from natural animals and plants, because of its advantages in wide source, low cost, low toxicity and subsequent treatment. Alkaloids such as papaverine, strychnine, quinine, nicotine, etc., have been studied as inhibitors for metals corrosion in corrosive media. This chapter aims to review the application of alkaloids for the corrosion inhibition of metals in corrosive media, and the development trend in this field is prospected.

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Plant derived cationic dye as an effective corrosion inhibitor for 7075 aluminum alloy in 3.5% NaCl solution

Cited by 82 publications

References 54 publications

The Effect of Concentration of Lawsonia inermis as a Corrosion Inhibitor for Aluminum Alloy in Seawater

The Effect of Concentration of Lawsonia inermis as a Corrosion Inhibitor for Aluminum Alloy in Seawater

Dry and wet lab analysis on benzofused heterocyclic compounds as effective corrosion inhibitors for mild steel in acidic medium

Anti-Corrosive Properties of Alkaloids on Metals

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