All articles
544 articles
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Effect of Antimony (Sb) incorporation on physical parameters of Te15 (Se100-xSbx)85 glassy alloys
Abstract: In the present study the physical parameters of Te15 (Se100-xSbx)85 glassy alloys prepared by melt quenching technique have been reported. The parameters viz. average coordination number (<r>), average number of constraints (Ncon), number of lone pair electrons (L), mean bond energy( <E>), cohesive energy (CE), average heat of atomization (Hs), glass transition temperature (Tg), density (ρ) and energy gap (Eg) were calculated theoretically for the glassy alloys. The mean bond …
Published in International Journal of Metallurgy and Alloys · Vol. 5, Issue 2, 2019 · pp. 46–55 Read article
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Organic Compound 5-(4-methoxybenzyl)-N-phenyl-1,3,4-thiadiazol-2-amine and NiS filler used to Mitigation the Corrosion of Mild steel and in Marine Atmosphere
Abstract: The concentration of chloride ions is higher in marine atmosphere. The bulk amount of mild steel uses in sea weather for different works. This metal is very sensitive in chloride ions. It produces hostile environment for mild steel. Chloride ions develop corrosion cell on the surface of mild steel and it changes their external and internal morphology as well as physical, chemical and mechanical properties. Mild steel exhibits corrosion reaction …
Published in International Journal of Metallurgy and Alloys · Vol. 5, Issue 2, 2019 · pp. 56–64 Read article
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Service temperature attenuated materials
Abstract: Service temperatures in engineering materials have been one of important factors. It alone has not been only controlling variable for creep properties. Useful services from useful materials therefore have been more important within temperature ranges stipulated for certain services. Temperature ranges of interest to materials engineer have been ranged from cryogenic regions (- 200oC) to temperature of a tungsten-filament lamp (2000oC). This article has been description of materials from room …
Published in International Journal of Metallurgy and Alloys · Vol. 5, Issue 2, 2019 · pp. 37–45 Read article
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Experimental Demonstration on the Recording of Capillary-Filled Microfluidic Devices Fabricated by Polymeric Material
Abstract: In this present experimental work, total 52 individual PMMA microfluidic devices are fabricated by maskless lithography, hot embossing lithography and direct bonding technique in a cleanroom laboratory. The selected working liquids are dyed water, dyed aqueous ethanol and dyed aqueous isopropyl alcohol and are prepared in a materials-science laboratory. Fabricated microfluidic devices are tested by the prepared aqueous working liquids, and each capillary-filled device after the surface-driven microfluidic flow is …
Published in International Journal of Polymer Science and Engineering · Vol. 5, Issue 2, 2019 · pp. 31–41 Read article
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A Critical Evaluation of Polypropylene Impact Copolymer Morphology
Abstract: In order to improve Polypropylene (PP) impact strength, the process of copolymerizing propylene with ethylene is being used. Polypropylene copolymer is essentially a rubber-toughened material consisting of polypropylene homo-polymer matrix in which ethylene-propylene rubber (EPR) is distributed. The overall impact behavior of the copolymer is solely controlled by the rubber morphology and its distribution in polypropylene matrix, which plays a critical role on crystallinity. Even a similar impact grade polypropylene …
Published in International Journal of Polymer Science and Engineering · Vol. 5, Issue 2, 2019 · pp. 1–8 Read article
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A Model to Study the Effect of Homogeneous Nucleation and Emulsifier Amounts on Methyl Methacrylate Emulsion Polymerization in a Seeded Semi-batch Reactor
Abstract: ABSTRACTAn extensive model is developed for methyl methacrylate emulsion polymerization. The assumption of monodispersed particle size distribution is used in developing the model. It is found that inclusion of homogeneous nucleation in the model leads to under prediction of variation of conversion with time. The effects of three different emulsifier amounts on the variation of conversion with time at 50°C isothermal reactor operation, keeping all the other ingredients constant are …
Published in International Journal of Polymer Science and Engineering · Vol. 5, Issue 2, 2019 · pp. 9–17 Read article
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Viscoelastic Properties of Polymer Nanocomposites with Polydispersity in Nanoparticle Sizes
Abstract: The viscoelastic properties of polymer nanocomposites are investigated as a function of the size distribution of nanoparticles, the nature of interactions and results are compared with the pure polymer melt. We modeled our PNCs with two sizes of nanoparticles and polymer blends and four different cases with different polymer-nanoparticle and nanoparticle-nanoparticle non-bonded interactions. We have observed the enhancement in properties is not only due to the addition of nanoparticles but …
Published in International Journal of Polymer Science and Engineering · Vol. 5, Issue 2, 2019 · pp. 42–52 Read article
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Castor Oil: A Sustainable and Natural Source of Raw Material for Polyurethane Foam Synthesis
Abstract: ABSTRACTUtilization of castor oil and its derivatives as a raw material for polyurethane synthesis is gaining more attention now a days. Castor oil has the unique structural property in terms of inherent presence of hydroxyl groups in its structure, which impart the natural functionality in the castor oil. Castor oil can be utilized for manufacturing polyurethane due to its inherent structural beauty in terms of presence of OH groups in …
Published in International Journal of Polymer Science and Engineering · Vol. 5, Issue 2, 2019 · pp. 18–30 Read article
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ENHANCEMENT OF MECHANICAL PROPERTIES OF ALLOY 61S BY REINFORCING NANO COMPOSITES
Abstract: During recent decades, a lot of interest had shown in the materials production with nano sized grains. Especially, the aluminum alloys and its composites are widely used for demanding structural applications due to combination of corrosion resistance, formability, weldability and, mechanical properties. The demand for toughness, higher strength and, strength and weight ratio of aluminum alloys for the structural application is ever growing owing to the increasing importance of achieving …
Published in International Journal of Metallurgy and Alloys · Vol. 5, Issue 2, 2019 · pp. 18–36 Read article
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Essential of bearing in materials engineering
Abstract: Essentials of bearing have been to maintain lubricant film to prevent metal to metal contact and hence local welding of two surfaces. Tribological and mechanical properties have improved by powder metallurgy route of bearing fabrications. Alloyed non-ferrous plane bearings have better friction coefficients than pure metals. Betterment has appeared in babbit/ bronze particulate reinforced composites. Ni addition has improved performances of graphite-lead free tin bronze composite layers on surface of …
Published in International Journal of Metallurgy and Alloys · Vol. 5, Issue 2, 2019 · pp. 1–17 Read article
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Photo-Semiconductor Catalysts for Water Splitting
Abstract: Photoelectrochemical (PEC) water splitting by means of sunlight appear for an eco-friendly and capable technology. Semiconductor electrode materials as the chief components in PEC water splitting cells have vital impacts on the device’s solar-to-hydrogen conversion efficiency, energy failure related to rapid recombination of photoinduced electron-hole pairs, as well as electrode deprivation, various kinds of electrocatalysts for improving PEC water splitting. Semiconductor oxide photocathode and photoanode (TiO2, Fe2O3, WO3, BiVO4, InGaAsP …
Published in International Journal of Energetic Materials · Vol. 5, Issue 2, 2019 · pp. 25–30 Read article
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Application of Schrödinger Wave Equation to Predict Wave Function on the Influence of Displacement
Abstract: This research work contains a review of the Finite-Difference Time-Domain method as applied to the time-dependent Schrödinger wave equation, and the basic update equations are derived in their standard form. A simple absorbing boundary condition was formulated and shown to be effective with narrowband wave functions. The stability criterion was derived from a simple, self explaining perspective and found to give better efficiency than earlier attempts. Conclusively, the idea of …
Published in International Journal of Energetic Materials · Vol. 5, Issue 2, 2019 · pp. 1–24 Read article
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Value Addition of Quartz Gemstones through Gamma Irradiation
Abstract: Color enhancement of gemstones through gamma irradiation is an established technology throughout the world. By value addition, the traders earned manifold prices to these colorless stones as compared to the fresh ones. For the color enhancement of these semi-precious stones, optimized doses of irradiations are required. To get the optical properties of the stones and to investigate the crystal lattice and chemical composition, X-Ray diffraction (XRD) and energy dispersive X-ray …
Published in International Journal of Energetic Materials · Vol. 5, Issue 2, 2019 · pp. 61–67 Read article
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Low-graded coals to upgrade
Abstract: Coal can be defined as a chemically and physically heterogenous, “combustible”, sedimentary rock consisting of both organic and inorganic materials. Organically, coal consists primarily of carbon, hydrogen, and oxygen, with lesser amounts of sulphur and nitrogen. Inorganically, coal consists of a range of ash-forming compounds distributed throughout coal. Major types of analysis are proximate analysis, ultimate analysis and calorific value analysis. Heat value or calorific value determines energy content of …
Published in International Journal of Energetic Materials · Vol. 5, Issue 2, 2019 · pp. 42–60 Read article
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Modeling the Energy Characteristics of Isotropic Harmonic Oscillations using 3D Analysis
Abstract: In this research, a mathematical model was developed to monitor, predict and simulate the energy characteristics of Isotropic Oscillator using 3-dimensional approach. In the model Langrange concept was applied L = , and was expressed as a function of stiffness, k and mass, m, which was modified as . MATLAB R2015 was used to monitor, predict and stimulate the formulated model in relationship with the stiffness varying with mass and …
Published in International Journal of Energetic Materials · Vol. 5, Issue 2, 2019 · pp. 31–41 Read article
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A Review on Green Inhibitors to Corrosion of Steel
Abstract: Traditions of green corrosion inhibitors are described to elucidate soybean oil derivatives, Spondias cytherea leaves, Rosmarinus officinalis L. leaves, Chrysophyllum albidum; Tridax procumbens L. leaves, roasted coffee, Jatropha curcas leaves, Propolis, Manilkara zapota fruit peel, avocado, Canna indica flower. Green inhibitors are ever praised due to environmentally friendly usage. Industrial feasibility is studied from laboratory simulations. Carbonated drink corrosion of steel is most acceptable to use green inhibitors. Corrosion in …
Published in International Journal of Composite and Constituent Materials · Vol. 5, Issue 1, 2019 · pp. 12–21 Read article
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Study of optical properties for five ring hexagonal photonic crystal fiber
Abstract: In this paper, basically, we have investigated about different optical properties for five-ring hexagonal photonic crystal fiber. Silica glass as material for PCF is taken and different parameters analyzed like, Effective refractive index, confinement loss and Waveguide dispersion. Properties are analyzed by varying the key design parameters like air hole diameter and lattice pitch. The comparative study of the results for different design parameters is analyzed. It has been observed …
Published in International Journal of Composite and Constituent Materials · Vol. 5, Issue 1, 2019 · pp. 28–33 Read article
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Highly Birefringence and Flattened Dispersion Photonic Crystal Fiber for Polarization Maintaining
Abstract: In this paper we present flattened dispersion and highly birefringence photonic crystal fiber. Higher Birefringence is required in sensing to maintain the linear polarization by reducing polarization coupling. The Flattened dispersion is used broadband and telecommunication application. This paper structure is hexagonal pcf with circular air-holes and we calculate the pcf property like effective index, dispersion, birefringence, confinement loss. This PCF is designed by COMSOL Multiphysics Software.
Published in International Journal of Composite and Constituent Materials · Vol. 5, Issue 1, 2019 · pp. 22–27 Read article
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Effects of Tungstate and Nitrite Ions as Corrosion Inhibitor for Cr-10Zr-10W Alloy in 0.5 M NaCl Solution
Abstract: The effect of different concentrations of tungstate and nitrite ions as corrosion inhibitors on the corrosion behavior of the sputter-deposited ternary Cr–10Zr–10W alloy was studied in 0.5 M NaCl solution open to air at 25±1°C using corrosion tests and corrosion potential measurement. The use of both the tungstate and nitrite ions enhanced the corrosion resistance properties of the alloy in 0.5 M NaCl solution. It is found that the tungstate …
Published in International Journal of Metallurgy and Alloys · Vol. 5, Issue 1, 2019 · pp. 11–19 Read article
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DIFFERENT METHODOLOGIES USED FOR PERFORMANCE ANALYSIS OF ORGANIC LIGHT EMITTING DIODE
Abstract: Organic Light Emitting Diode (OLED) is a Solid state lighting devices, the charge transporters must be infused from the anode and cathode yet the execution, lifetime, effectiveness and solidness of these devices are normally administered by the correct thickness of the material layers and terminal/organic interfaces at the anode contacts. This study we exhibit the approach using different thickness and doping of the material in Organic Light Emitting Diode. We …
Published in International Journal of Metallurgy and Alloys · Vol. 5, Issue 1, 2019 · pp. 20–25 Read article