Glyceral Trinitrate: As Potential Corrosion Protector for Mild Steel in Acid Medium Along with Paint-coated Steel in a Saline Environment

2021 ◽  
Vol 37 (6) ◽  
pp. 1421-1428
Author(s):  
M. Menaga M. Menaga ◽  
Sowmya Ramkumar ◽  
D. Nalini D. Nalini
Keyword(s):  
Mild Steel ◽  
Theoretical Calculations ◽  
Industrial Applications ◽  
Water Molecules ◽  
Pharmaceutical Drugs ◽  
Saline Environment ◽  
Corrosion Resistance Property ◽  
Metal Boundary ◽  
Mixed Nature ◽  
Saline Medium

The importance of mild steel lies in its industrial applications, and the fight against corrosion is very important from an ecological, economic, technical, and aesthetic view. The current study involves the use of pharmaceutical drugs namely GTN towards corrosion inhibiting reaction was examined by gravimetric and electrochemical approaches. From weight loss studies, maximum I.E (%) 94.04% reached for 60 mg/L concentration of GTN for 6 hrs immersion time. The Polarization measurements showed that the behaviour of GTN as mixed nature and surface assimilation of GTN at the superficial, such that water molecules are substituted at the solution-metal boundary. The corrosion resistance property of the studied inhibitor as coating was also evaluated in NaCl which shows better progress corrosion retardation property of coating in the saline medium. Theoretical calculations were employed using DFT to correlate with the experimental observations.

scholarly journals Advancing Frontier Nanophysics in Time of Analytical Chemistry: Who to educate first?

2020 ◽  
Vol 3 (3) ◽  
pp. 275-281
Author(s):  
Hendry Izaac Elim
Keyword(s):  
Analytical Chemistry ◽  
Integrated Circuits ◽  
Molecular System ◽  
Herbal Medicines ◽  
Industrial Applications ◽  
Pharmaceutical Drugs ◽  
Applied Physics ◽  
The Origin Of Life ◽  
Level Of Understanding ◽  
Near Future

Frontier nanophysics in conjunction with nanomedicines, nanoscience and nanotechnology (NNN) developed before the science of analytical chemistry has been very challenges with many competitive obstacles to improve the accuracy and precise nm measurements in order to find out the point of its main chemical structure compositions, uniformity and the concentration contents to each substance. Moreover, exotics nanomaterials either in pure organic and inorganic compound or in hybrid organic-inorganics nanomaterials have shown their remarkable as well as attractive impacts in many nanotechnology and related industrial applications such as in ultrafast picosecond or femtosecond telecommunication integrated circuits and devices system, cosmetics and beauty products, as well as health or pharmaceutical drugs and herbal medicines. In this short communication paper, one explains how to educate first those who are eager indeed to study and expand their knowledge in the discovery level of understanding the nature of chemistry materials. Such guide will involve at least two to three parts of knowledge and skills consisted of the origin of life, electronics of molecular system (MES), and precise or accurate measurements. By implementing these advices, one believes the progress of applied physics frontier works in analytical chemistry will soon obtain a good harvest in the near future.

scholarly journals INHIBISI KOROSI BAJA RINGAN MENGGUNAKAN BAHAN ALAMI DALAM MEDIUM ASAM KLORIDA: Review

2019 ◽  
Vol 10 (1) ◽  
pp. 51
Author(s):  
Yeni Stiadi ◽  
Syukri Arief ◽  
Hermansyah Aziz ◽  
Mai Efdi ◽  
E. Emriadi
Keyword(s):  
Mild Steel ◽  
Plant Extracts ◽  
Mixed Type ◽  
Corrosion Inhibitors ◽  
Industrial Applications ◽  
Acidic Media ◽  
Acidic Environments ◽  
Corrosion Of Steel ◽  
Metal Etching ◽  
Mixed Type Inhibitor

The corrosion of steel and its alloys is an important problem in industry, especially in acidic environments. Mild steel is one of the important alloys of iron which has many industrial applications because of its excellent mechanical properties, but mild steel is susceptible to corrosion. Corrosion problems need to be a concern and must be handled properly. Hydrochloric acid is widely used for pickling, cleansing, decomposition and metal etching, on the other hand also contributes to corrosion of metal surfaces. Plant extracts investigated the properties, mechanisms of adsorption and efficiency of inhibition as environmentally friendly corrosion inhibitors for various steel materials in different acidic media. The efficiency of corrosion inhibition of steel from plant extracts analyzed ranged from 72-98% and generally as a mixed-type inhibitor. Most of the inhibitors are adsorbed on the steel surface through a physisorption mechanism.

An efficient and eco-friendly anti-corrosive system based on Beeswax- Graphene oxide nanocomposites on mild steel in saline medium

2020 ◽  
Vol 18 ◽  
pp. 100393 ◽  
Author(s):  
Kamalon Rajitha ◽  
Kikkeri Narasimha Shetty Mohana ◽  
Saurav Ramesh Nayak ◽  
Mahesh Bhaskar Hegde ◽  
Ambale Murthy Madhusudhana
Keyword(s):  
Graphene Oxide ◽  
Mild Steel ◽  
Saline Medium

scholarly journals Design and construction of a continuous impregnation apparatus of woven fibres, using non-meshing double-sinusoidal toothed rollers

2020 ◽  
Vol 317 ◽  
pp. 01006
Author(s):  
G. Vasileiou ◽  
C. Vakouftsis ◽  
N. Rogkas ◽  
S. Tsolakis ◽  
P. Zalimidis ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Theoretical Calculations ◽  
Dimensional Space ◽  
Continuous Production ◽  
Three Dimensional ◽  
Industrial Applications ◽  
Three Dimensions ◽  
Main Challenge ◽  
Complete Failure ◽  
As Stress

Resin-impregnated fibres are extensively used in a variety of industrial applications as is demonstrated in the literature. Resin-fibre impregnation techniques are used in order to create homogeneous macro – materials and to take full advantage of the mechanical properties of the fibrous reinforcement (i.e. carbon, glass, organic or ceramic fibres). However, achieving highly impregnated fibres is proven quite challenging especially in continuous production techniques that are required for large production rates. The main challenge lies in achieving complete impregnation of the tightly arranged fibres mainly referring to the formed yarns containing multiple fibres, sometimes even twisted. This results in partially impregnated materials containing cavities that tend to exhibit inferior mechanical properties compared to the theoretical calculations, which assume fully impregnated materials. These cavities often lead to crack generation, acting as stress concentration sites, resulting in complete failure of the material at macro-level. In this paper a novel technique for continuous production of fully impregnated woven fibres is presented using non – meshing, co – rotating rollers. A laboratory-scale apparatus is designed and described thoroughly in the context of this work. The method resembles pultrusion in the sense that a reinforcement plain fibre mesh (glass) is co–processed with the liquid resin through a pair of co–rotating toothed rollers to produce a continuously reinforced 3D tape. The surface of the rollers is produced from a double-sinusoidal toothed surface (rack) using the Theory of Gearing in three-dimensions, which imposes significant differential sliding of the fibres without differential tension and facilitates fibre wetting. The geometry of the rollers is calculated not to damage the unprocessed fibres, while facilitating local widespreading of the stranded fibres in the three – dimensional space leading to the resin being able to fully penetrate the reinforcing fibre material.

scholarly journals Experimental, Monte Carlo and Molecular Dynamic Study on Corrosion Inhibition of Mild Steel by Pyridine Derivatives in Aqueous Perchloric Acid

Electrochem ◽  
2020 ◽  
Vol 1 (2) ◽  
pp. 188-199 ◽  
Author(s):  
Avni Berisha
Keyword(s):  
Monte Carlo ◽  
Mild Steel ◽  
Molecular Dynamic ◽  
Corrosion Inhibition ◽  
Perchloric Acid ◽  
Density Functional ◽  
Theoretical Calculations ◽  
Inhibition Mechanism ◽  
Pyridine Derivatives ◽  
Aqueous Perchloric Acid

The corrosion of mild steel in aqueous perchloric acid solution was studied in the presence and absence of four different pyridine derivatives. Electrochemical measurements point out that these molecules inhibit the corrosion of mild steel by acting as mixed inhibitors. The adsorbed molecules act as a barrier that prevents the oxidation of the metal and the hydrogen evolution reaction at the mild steel surface. Molecular insights vis-à-vis the corrosion process were acquired by the use of Density Functional Theory (DFT), Molecular Dynamics, and Monte Carlo calculations. Monte Carlo and Molecular Dynamic simulation were used to understand at the molecular level the adsorption ability of the studied molecules onto Fe(110) surface. The experimental results and theoretical calculations provided important support for the understanding of the corrosion inhibition mechanism expressed by the pyridine molecules.

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