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a decrease » _ decreased (Expand Search), _ decreases (Expand Search)
5 steel » _ steel (Expand Search)
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Effect of octylphenol polyethylene oxide on the corrosion inhibition of steel in 0.5 M H2SO4
Published 2004“…A non-ionic surfactant, octylphenol polyethylene oxide (OPPEO), was evaluated as an inhibitor for corrosion of low-carbon steel in 0.5M H 2SO4. Potentiodynamic and potentiostatic methods and scanning electron microscopy were used to study the inhibition effectiveness of the surfactant. …”
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An Eco-Friendly Quaternary Ammonium Salt as a Corrosion Inhibitor for Carbon Steel in 5 M HCl Solution: Theoretical and Experimental Investigation
Published 2022“…The overall results revealed that adding varied concentrations of Q-22 significantly decreases the corrosion rate of C-steel. The results revealed the physisorption nature of Q-22 onto the C-steel surface, with adsorption following the Freundlich isotherm (∆Hads = −16.40 kJ·mol−1). …”
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Experimental investigation on the compressibility of Al/Al2O3 nanocomposites
Published 2016“…With up to 12 wt.% of Al2O3, microhardness increases from 62 to 150 HV due to the decrease of the crystallite size. …”
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Corrosion inhibition of API X120 steel in a highly aggressive medium using stearamidopropyl dimethylamine
Published 2017“…The inhibition efficiency of the stearamidopropyl dimethylamine (SAPDA) surfactant for the corrosion of API X120 steel in a 0.5 M HCl solution at different temperatures was investigated using different electrochemical and microscopy techniques. …”
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Phase, microstructure and tensile strength of Al–Al2O3–C hybrid metal matrix composites
Published 2020“…Al2O3 and carbon. Density decreases due to variation of reinforcement because ceramic reinforcement has low density. …”
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Correlation of structural and mechanical properties for Al-Al2O3-SiC hybrid metal matrix composites
Published 2021“…Hardness of hybrid composites increases upto 5 wt.% variation of ceramic reinforcements i.e. Al2O3-SiC after that it decreases. Impact strength of hybrid composite has been increased with an increase in weight percentage of ceramic. …”
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Decreased number of acute appendicitis cases in pediatric population during the COVID-19 pandemic: Any link?
Published 2020“…The reasons behind the decrease in AA frequency during the COVID-19 pandemic remain unclear. …”
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Effect of reinforcement concentration on the properties of hot extruded Al-Al2O3 composites synthesized through microwave sintering process
Published 2017“…Results showed that, as the content of hard ceramic particles increases, it improves overall mechanical properties including microhardness, 0.2% yield strength, ultimate compression/tensile strength, and Young's modulus while the ductility and co-efficient of thermal expansion decreases. XRD patterns and SEM/EDS mapping images show a uniform distribution of Al2O3 particles in the Al matrix. …”
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Effect of reinforcement concentration on the properties of hot extruded Al-Al2O3 composites synthesized through microwave sintering process
Published 2017“…Results showed that, as the content of hard ceramic particles increases, it improves overall mechanical properties including microhardness, 0.2% yield strength, ultimate compression/tensile strength, and Young's modulus while the ductility and co-efficient of thermal expansion decreases. XRD patterns and SEM/EDS mapping images show a uniform distribution of Al2O3 particles in the Al matrix. …”
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Improved properties of Al-Si3N4 nanocomposites fabricated through a microwave sintering and hot extrusion process
Published 2017“…The thermal expansion coefficient of the Al composite decreased with the progressive addition of hard Si3N4 nanoparticles. …”
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Electrochemical behavior of mild and corrosion resistant concrete reinforcing steels
Published 2020“…Extensive analysis of the results indicates that the corrosion resistance of the evaluated steels was in the following decreasing order: EC, HC, MS, and HS.…”
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Viscosity of Al2O3-water nanofluids
Published 2020“…The existing experimental result about the viscosity of nanofluids shows clearly that the viscosity augmented accordingly with an increase of additive concentration and decreased with the temperature rise. In this paper, different characteristics of viscosity of nanofluids are compiled and the viscosities of Al2O3-water nanofluids are estimated by Matlab approximation.…”
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Al-Ghazali’s and Ibn-Khaldoon’s Innovative Contributions in Education
Published 2024“…This study aims to explore Ibn Khaldoon’s and Al-Ghazali’s innovative perspectives on education and teaching methods. …”
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