The use of acid solution during pickling and industrial cleaning leads to corrosive attack on mild steel. Acid solutions are widely used for different applications in industries such as pickling, acid cleaning of boilers, descaling and oil well acidizing. Hydrochloric and sulfuric acids are the most common types of corrosive acids used in such industrial operations .
Organic compounds are usually used to protect metal against corrosion as inhibitors in acidic media. The efficiency of an organic compound as a successful inhibitor is mainly dependent on its ability to get adsorbed on the metal surface. most organic inhibitors adsorb on the metal surface by displacing water molecules on the surface and forming a compact barrier. Heteroatoms, such as sulfur, phosphorus, nitrogen, and oxygen, together with aromatic rings in inhibitor structure are the major adsorption centers. The planarity and the lone electron pairs in the heteroatoms are also important features that determine the adsorption of molecules on the metallic surface –.
unfortunately most of the corrosion inhibitors used for the control of steel corrosion in acidic mediums are toxic and environmentally hazardous materials. In recent years researchers have paid attention to the development of drugs as inhibitors for metallic corrosion. The choice of some of the drugs used as corrosion inhibitors is based on the following facts: a) the molecules have oxygen, nitrogen, and sulfur as active centers, b) they are healthy and reportedly very important in biological reactions (i.e., not hazardous and environmentally friendly), and c) they can be easily produced and purified, , .
According to literature imidazole and thiazole derivatives ha...
... middle of paper ...
 I. Lukovits, E. Kálmán, and F. Zucchi, “Corrosion Inhibitors—Correlation between Electronic Structure and Efficiency,” Corrosion, vol. 57, no. 1, pp. 3–8, Jan. 2001.
 C. Marins, A. Esteves-souza, C. A. Martinez-huitle, C. José, F. Rodrigues, M. Aparecida, M. Maciel, and A. Echevarria, “Experimental and theoretical evaluation of semicarbazones and thiosemicarbazones as organic corrosion inhibitors,” Corros. Sci., vol. 67, pp. 281–291, 2013.
 G. Gao and C. Liang, “Electrochemical and DFT studies of ␤ -amino-alcohols as corrosion inhibitors for brass,” vol. 52, pp. 4554–4559, 2007.
 M. K. Awad, M. R. Mustafa, and M. M. Abo, “Journal of Molecular Structure : THEOCHEM Computational simulation of the molecular structure of some triazoles as inhibitors for the corrosion of metal surface,” J. Mol. Struct. THEOCHEM, vol. 959, no. 1–3, pp. 66–74, 2010.
Need Writing Help?
Get feedback on grammar, clarity, concision and logic instantly.Check your paper »
- I. WHY CORROSION MONITORING Corrosion cost the process industries an estimated $300 billion dollars a year in lost production, equipment failure, and fines for environmental and safety violations (Avery, 2008). Losses in money, time and equipment made it important to study the corrosion and look for ways to stop it or control it. But since corrosion is a natural problem, it means that we can't totally stop it from happening, but we can try to control it. This fact led to the technology of corrosion monitoring which on the other hand started to undergo development by taking different approaches, considerations and ideas to control the corrosion problem.... [tags: Environment, Environmental]
1788 words (5.1 pages)
- 1 INTRODUCTION Corrosion is a natural process, from which a modified material will either break down into a more basic state or be broken down (Gundiler et al, 2000). The process causes undesirable traits in the product which may range from a change in appearance to failure of structures. The effect of corrosion as addressed by Ahmad (2006) costs many billions to governments, as an outcomeindustry has developed many ways to combat corrosion. Combating corrosion can be done though two methods, by design and by inhibition.... [tags: Research Analysis]
1244 words (3.6 pages)
- Certain metals could be affected by the pH of water. This, however, could reflect on real life situations that could affect us, the environment, and also our pipe system as well. Some metals such as iron and steel oxidize when they are exposed to humidity and water thus forming corrosion known as ferric oxides (Roy, 2009). Corrosion has destructive potential if left untreated (Stahl, 2005). Knowing what metals are prone to corrosion is an important issue to take notice about because corrosion happens all around us including possessions that belong to us.... [tags: Iron, steel, Corrosion, Alkalinity]
1586 words (4.5 pages)
- In light with the modern industries, steel has been discovered to be the central supporting part of most manufacturing industries or production industries. Steel is a relatively cheap and versatile material used in the production of about every kind of good or machinery, and because of this steel is vital in the modern style of living and for the economic well-being. Additionally, because of the essential functions played by steel in general economic and infrastructural development, the steel industry on the other hand has often been considered as an indicative for prowess of an economy.... [tags: Steel Industry ]
905 words (2.6 pages)
- Development of a PVD coating suitable to replace electroplated cadmium. Background information • Approximately one-fifth of ferrous metal produced was destroyed by corrosion every year. Coating is a surface treatment widely used in almost all mechanical components. This process is taken to either increase the mechanical property or providing resistance to certain hazards which potentially damage to the component itself. Electric plating is one of the majorities coating method taken with mechanical component, cadmium is usually chosen for coating on tightening threads.... [tags: treatment, PVD coating]
674 words (1.9 pages)
- Every element in the periodic table falls into one category of metals, non-metals or metalloids. Metals are the most common type and they are defined by certain chemical and physical properties. Metals can be narrowed down by looking at their chemical properties. They have positive valences, which means that they give electrons to the atoms they bond with. Giving negative electrons away makes the metals form cations. (BrainPop) As metals form cations, they are able to oxidize and this makes them prone to corroding when exposed to dampness.... [tags: rusting pipes, chemistry, periodic table]
1015 words (2.9 pages)
- Southwestern Ohio Steel Company Southwestern Ohio Steel Limited Partnership (SOSLP) was considered to be one of the industry leaders in technology and service. SOSLP sells to approximately 500 customers, twenty five of which produces about two-thirds of the company's sales. Dan Wilson, vice president of sales at SOSLP, had recently received a letter from Matworks requesting SOSLP to provide sponsorship for an upcoming Matworks annual sales meeting. Dan needed to decide if providing sponsorship was feasible keeping in mind that Matworks had been a long standing customer of SOSLP while also knowing that gifts were no longer a custom in the steel industry.... [tags: Business Ohio Steel Company Essays]
615 words (1.8 pages)
- <ol> <li value="9">6: Option - Shipwrecks, Corrosion and Conservation <li value="9">6.1: The chemical composition of the ocean implies its potential role as an electrolyte </ol> Identify the origins of the minerals in oceans as: <ul> <li> leaching by rainwater from terrestrial environments <li> hydrothermal vents in mid-ocean ridges </ul> Identify - recognise and name There are 2 major sources of the salts in seawater: <ol> <li value="1"> Leaching by rain and ground water. <li value="2"> Dissolution of salts by water passing through hydrothermal vents.... [tags: Chemistry]
3833 words (11 pages)
- Corrosion Audit 1.Introduction: Corrosion is the electrochemical deterioration of a metal because of its chemical reaction with the surrounding environment. While new and better materials are continuously being developed, this progress is offset, in part, by a more aggressive operational environment. This problem is compounded by the fact that corrosion is a complex phenomenon. It can take many different forms and the resistance of materials to corrosion can drastically change with only a small environmental change.... [tags: essays papers]
1517 words (4.3 pages)
- The Politics of Trade in Steel 1. Does the World Trade Organization in this case represent a loss of U.S. national sovereignty. Why do you think the WTO sided with the European Union. I don't think the Work Trade Organization represents a loss of U.S. national sovereignty. The WTO in this case is simply doing its job overseeing international trade and enforcing the agreement that all the WTO member nations including the United States signed. I think the World Trade Organization might have sided with the European Union because they felt that the U.S.... [tags: Steel Industry Trade Production]
1335 words (3.8 pages)