Microstructural evolution and characterization of super-induced MgO composite on zinc-rich coatings

The effect of Zn-MgO deposition prepared through direct electrolytic co-deposition on mild steel was studied.The experiment was conducted at current density between 0.5 and 1 A/cm−2. The morphologies of the coated surfaces were characterized using Atomic Force Microscope (AFM), high resolution Nikon Optical Microscope (OPM) and Scanning Electron Microscopy attached with Energy Dispersive Spectrometer (SEM/EDX). The corrosion behavior was studied using linear potentiodynamic polarization method in 3.5% simulated environment. The phase change was evaluated using X-ray Diffractogram (XRD). The microhardness characteristics of the obtained deposits were analyzed with dura scan hardness tester. The stability of the ceramic composite was determined using heat-treatment processes at 200 oC for 4 h. The results show that the structural behavior and corrosion resistance of the coating is dependent on the composite induced particulate and applied current density. It is found that increasing MgO contents beyond optimum level does not cause increase in microhardness progression. A decrease in applied current maximally influences the deposit adhesion characteristics. The enhanced thermal stability of 236.4 HVN for Zn- 20MgO at 0.5 A/cm2 alloy and increase corrosion behavior was thus attributed to its chemical composition, phase content and the synergistic effect of Zn and MgO on the carbon steel

Nanoparticle Dispersion, Microstructure and Thermal Effect of Multi-doped ZrO2/SiC from Sulphate Induced Electrolyte

Effort to improve the hardness and thermal resilient properties of coating for advanced engineering applications has necessitated this study. Zn sulphate electrolyte was induced with ZrO2-SiC composite particulate at varied current density of 1.5 and 2.0 A/cm2 for 10 minutes. The incorporated composite particles of ZrO2/SiC were varied in other to examine their mechanical responses on zinc electrolyte. The coated films were characterised with scanning electron microscope with attached electron dispersion spectroscopy (SEM/EDS) and atomic force microscopy (AFM). The micro-hardness properties of the coated and thermal aged alloy were determined with high diamond micro-hardness tester. The anti-corrosion progression was examined using linear polarization technique in 3.65% NaCl. From the results, the incorporation of the composite matrix was found to impact significantly on the surface and microhardness properties. The co-deposition of composite submicron on the zinc electrolyte revealed that homogenous grain structure was obtained.To this end, a boost in the performance characteristics was attained due to effective co-deposition parameters in the electrolyte

The Role of Research in Economic Development

This study channels via the association between analysis utilizations, and financial advancement at the national level in creating country. Innovative works are basic driving advancement, national improvement and financial development, yet there likewise should be objective will to succeed. There must be a solid collaboration amongst the scholarly world and the industries. At the same time, hypothetical, as well as experimental writing has radically demanded that the thing of interests in examine is an irreplaceable part of economic development. The affiliation between inquire about uses and monetary execution has pulled in a lot of consideration in the scholastic field for a long while. Notwithstanding that, the subject has been for some time stressed by governments and private undertakings. The vast majority of the modern financial experts have ascribed the sustained development in developingnations to their escalated inquiresin research works. The dialog of the connection between economic development and research expenses has an uncommon direness, for instance Turkey's aspiring financial targets. The emphasis on human capital as a driver of economic development for developing nations has prompted undue consideration on school accomplishment. Developing nations have made impressive advance in shutting the hole with regarding school accomplishment, yet ongoing exploration has underscored the significance of subjective aptitudes for economic development. This outcome shifts regard for issues of school qualityaround the developing nations has been significantly less fruitful in shutting the holes. Without enhancing school quality, developing nations will think that it is hard to enhance their long run financial performance. This paper exposes the impact of research in economic development of developing nations where it is taken in high-regard, shows where research has taken them to, influencing their GNP, NDP, new inventions, established standards

Effect of Curing Water Qualities on Compressive Strength of Concrete

The strength development and durability of concrete can be influenced by the quality of water used for curing the concrete. Consequently, this study was aimed at investigating the effect of contaminating the water for curing concrete on its compressive strength. Raw (tap) water and a water cement ratio of 0.6 were used in the production of the concrete cubes of 50 mm x 50 mm x 50 mm. The concrete samples produced were cured in raw water and water contaminated with varying percentages (25, 50 and 100%) of wastewater collected from a wastewater stabilisation pond. Chemical analysis was carried out to determine the pH, total dissolved solids (TDS), chloride, hardness, alkalinity, salinity, temperature and conductivity of the wastewater. The results of chemical analysis showed that these parameters are higher in the wastewater samples than in the raw water samples. The compressive strength of the concrete cubes were determined after 1, 3, 7, 14, 28, 60 and 90 days of curing.  The compressive strength of concrete samples immersed in raw water, shows there was a progressive decrease in the strengths of the samples immersed in contaminated water as the percentage of the wastewater increased. Therefore, it is recommended that concrete that will be in contact with wastewater or sewage-polluted water should have been cured in uncontaminated water that gives assurance of maximum strength development. for the compressive strength of concrete cured in raw water, for 28 days the compressive strength of concrete in 25% waste H2O + 75% rawH2O, 50% waste H2O + 50% rawH2O and 100% wastewater content decrease by 12.35%, 25.44%, 35.74% respectively

Overview of Composite Materials from Green Product in Mechanical Application

Green composites have gotten a lot of awareness in the composite industry lately because the whole world is driving toward sustainability whereas conventional composites are usually prepared from petroleum products which are usually non-degradable and result in environmental pollution. This paper presents a succinct review of the composite materials produced from green composites with a potential of being applicable in automotive body parts, aircraft body parts, medicine, construction etc. The review classifies the different research works done into six groups, then identifies gaps in research with the aim of charting a course for future researchers. Also, the review is very essential to manufacturers as they can be kept abreast with the latest developments in green composites which could replace some of the conventional composites used in the manufacturing industr

Electrochemical Oxidation Assessment and Interaction of 2-aminoethanol and N, N-diethylethanamine Propagation in Acidic Medium

Electro�oxidation and inhibitor performance of copper specimens in 1 M hydrochloric acid solu� tion was investigated at room temperature by linear potentiodynamic polarization and gravimetric method in the presence of 2�aminoethanol (A) and N, N�diethylethanamine (D) as an inorganic inhibitor. The effect of the inhibitory concentration on the corrosion behavior of copper was studied over 288 hrs at 298°K. The inhibitory efficiency rise up to 96% for single induced and 98% for synergistic behavior. The adsorption mechanism characteristic was supported by SEM/EDX analysis and adsorption isotherm. From all indica� tion, the inhibitive efficiency of these compounds majorly depends on their molecular structure and concen� tration. The blocking effects of the surface interface were also explained on the basis of the inhibitor active action. 2�aminoethanol and N, N�diethylethanamine inhibits copper in 1 M HCl by strictly affecting both the anodic and cathodic sites. Portion of the surface covered calculated was also found to follow Langmuir adsorption isotherm

Data on anti-corrosion characteristics of eco-friendly inhibitive extract on the hot corrosion degradation trend of A6063 aluminum alloy in 1.0 M HCl solution

The study of Lasienthera africanum as corrosion inhibitor for A6063 grade aluminum alloy in 1.0 M HCl acid solution using weight loss method of corrosion study was investigated at 30 °C and 40 °C to check its degradation trend at high varying temperature application. The results revealed that L. africanum in 1.0 M acidic environment decreased the corrosion rate at various concentrations considered. Inhibitor efficiency (IE) as high as 98.7 and 94.9% both at 30 °C and 40 °C respectively, was observed. Keywords: Inhibitor efficiency, Temperature, HCl solution, Lasienthera africanu

Data on the effect of temperature variation tendency on the inhibitive absorption of Lasienthera africanum in 0.5M HCl: A necessity

The assessment of Lasienthera africanum as corrosion inhibitor for aluminium alloy in 0.5M HCl acid solution using weight loss method was investigated at 303 and 313 K to check its behaviour at high temperature application. Inhibitor efficiency (IE) as high as 93.8, 87.3% both at 303 and 313 K, respectively, was obtained. It can be seen that the inhibition efficiency values increase with increase in extract concentration which suggests that the inhibition is due to the adsorption of the inhibitor on the metal surface. A straight line is obtained when C/θ is plotted against C with linear correlation coefficient of the fitted data close to 1. The adsorption of the inhibitor molecules obey Lanqmuir׳s adsorption isotherm. Keywords: Weight loss, Temperature, HCl solution, Lasienthera africanu

In situ assessment of degradable carbon effusion for industrial waste water treatment

The need for safe and economical methods for wastewater purification has necessitated this research. Blends of different peels: Potato-, apple- and pineapples-peels (PAP-peels) were impregnated with aqueous solutions of ZnCl2 following the variant of the incipient wetness method for activation of activated carbon (AC). Scanning Electron Microscope with attached energy dispersive spectrometer, Atomic Adsorption Spectrometry and Fourier Transform Infrared spectrometer equipment were used for the characterization of the AC produced. The result shows that PAP-peels derived ACs had micro porous characteristics. The study revealed that these new combined adsorbents materials are inexpensive, easily available and they have applications for the removal of Cu, Pb and Cr contained in industrial effluents