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471 articles for “Micro-Electronics.”
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Analysis of Oxidation Behavior on T-22 Boiler steel at 800°C
Abstract: The behavior of boiler steel T-22 in a rich air environment has been studied under the condition of isothermal at 800°C for 50 cycles in a cyclic manner. The kinetics of oxidation was established for boiler steel T-22under cyclic conditions for 50 cycles by weight change technique per unit area. Each cycle heating the sample at 1 hour followed by cooling 20 minutes at ambient temperature. Detonation gun spray techniques …
Published in Journal of Polymer & Composites · Vol. 8, Issue 1, 2020 · pp. 18–25 Read article
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Improving Photocatalytic and Antibacterial Properties of Zein/Polyvinyl Alcohol Polymer Composite Film by Dispersing TiO2 Nano Particles
Abstract: Zein/polyvinyl alcohol/nano-TiO2 composite film was effectively blended using a solution casting method. Mechanical, photocatalytic, and antibacterial properties of the composite film were evaluated. The breaking elongation of the composite film increased up to the maximum loading of 0.4% of nano-TiO2. The humidity and moisture content relationship was estimated with standard modified models of Halsey, Oswin, Chung Pfost, and Henderson. It was found that the Halsey model was the most suitable …
Published in Journal of Polymer & Composites · Vol. 8, Issue 2, 2020 · pp. 110–127 Read article
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Development of Refractory Synthesized from Waste Ceramic Fiber and Chamotte
Abstract: Research on refractory materials is always essential in thermal engineering to ensure both heat savings and environmental protection. Raw materials used initially have a great influence on the production process and product properties. In addition, the refractory products are tested under conditions of high temperature and varying intensity, such as tests of thermal shock resistance. In this study, new refractory composites were prepared by mixing waste ceramic fibers with chamotte …
Published in Journal of Polymer & Composites · Vol. 8, Issue 2, 2020 · pp. 101–109 Read article
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Enhancement of Dielectric Properties of PVDF Composites with MWCNT and GCNF Fillers
Abstract: The paper discusses the role of multiwalled carbon nanotube (MWCNT) and graphitized carbon nanofibre (GCNF) in Polyvinylidene fluoride (PVDF) composites prepared by melt mixing method. Analytical studies were carried out using X-ray diffraction analysis (XRD) and Fourier transform infrared spectroscopy (FTIR) for understanding the role of fillers. Formation of β phase crystalline structure with a relative increase in β phase content is observed and is maximum at 5 wt.% of …
Published in Journal of Polymer & Composites · Vol. 8, Issue 3, 2020 · pp. 43–52 Read article
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Eco-friendly Materials of Polymer Composites Based on Water Hyacinth Fibers/Roving
Abstract: Overgrowth of water hyacinths will cause difficulties for water traffic in the Mekong Delta and affect the growth of other aquatic species. The water hyacinth as a raw material available in nature has been applied in production of the composite materials. The water hyacinth trees were treated in NaOH solution for 2-12 hours with concentration in the range 2.5-15.0%. The morphology of the water hyacinth before and after treatment was …
Published in Journal of Polymer & Composites · Vol. 8, Issue 3, 2020 · pp. 62–69 Read article
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Effects of Plasticizers on Structures of Chemical Functional Groups, Morphologies, Water Vapor Permeability, and Thermal Properties of HPMC/BW Biopolymer Films
Abstract: Food preservation is one of the fields that many researchers are interested in, especially in the epidemic period like COVID-19 today. The better food or agricultural products are preserved for a long time, the more it ensures social stability for state management related to food security for people. This paper introduces one kind of biopolymer films with investigation on effect of plasticizers to its characteristics. In order to produce biopolymers, …
Published in Journal of Polymer & Composites · Vol. 9, Issue 2, 2021 · pp. 10–20 Read article
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Synthesis of PANI/RGO/NiCrO Nanocomposite Material for Charge Storage Application
Abstract: PANI/RGO/NiCrO nanocomposite is synthesized by chemical oxidative polymerization of aniline and Nickel-Chromium Oxide (NiCrO). The prepared PANI/RGO/NiCrO nanocomposite exhibited high specific capacitance of 800 F/g at the scan rate of 5 mV/s, high power density of 1399.44 Wkg-1 and high energy density of 70 Whkg-1. The as-prepared polymer nanocomposites were characterized by X-ray diffraction (XRD) to study crystallinity, Fourier transform infrared spectroscopy (FTIR) to know the functional groups, Transmission electron …
Published in Journal of Polymer & Composites · Vol. 10, Issue 1, 2022 · pp. 89–99 Read article
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Synthesis and Characterization of Al-Mg-Si Alloy based Hybrid Composite Reinforced with SiC and Graphite
Abstract: The present work is carried out to investigate the mechanical properties of Al-Mg-Si alloy matrix based hybrid metal matrix composites (MMCs) using stir casting method owing to its popularity and large scale productions. SiC and graphite reinforcements were added each with 1%, 2%, 3% and 4% respectively to fabricate four composites specimens. X-ray diffractometer and scanning electron microscope were used for phase identification and microstructure characterization (SEM). Density, hardness, compressive …
Published in Journal of Polymer & Composites · Vol. 10, Issue 3, 2022 · pp. 9–19 Read article
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Structural and Electrical Properties of Low-Energy Ion Beam Kr-Irradiated In/Se Bilayer
Abstract: In the present work, In (~50 nm) over Se (~50 nm) thin films were deposited successively on an Si substrate by e-beam evaporation method under 2×10–5 mbar pressure. The In/Se bilayers were irradiated with low-energy ion beams of 350 keV Kr+1 with fluence of 3 × 1016 ions/cm2. The sample was subsequently characterized for phase formation using X-ray diffraction and thickness profile using Rutherford backscattering spectrometry analysis. In the pristine …
Published in Journal of Polymer & Composites · Vol. 11, Issue 1, 2023 · pp. 91–96 Read article
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Effect of Length and Tenor of the Introduction of Sansevieria cylindrica Fibers on the Mechanical Performance of Natural Fiber Composites
Abstract: The substitution of synthetic fillers, such as carbon black, with biobased ones in natural rubber (NR) is a trend of interest in view of increased sustainability and exploitation of agroforest waste in the materials sector. In this work, NR was filled with short fibers extracted from Sansevieria cylindrica (SC) leaves of various length (10, 20, 30, or 40 mm) and in different amounts (3, 6, or 10 g per 100 …
Published in Journal of Polymer & Composites · Vol. 11, Issue 2, 2023 · pp. 94–101 Read article
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Photoluminescent Reduced Graphene Oxide (rGO)–ZnO Nanocomposites Prepared Through one-pot Solvothermal Route
Abstract: In the present article, we report solvothermal synthesis of reduced graphene oxide (rGO)–ZnO nanocomposites through in situ exfoliations of graphite oxide with two different zinc-containing precursors viz. Zinc acetate dihydrate and zinc(II) acetylacetonate in water-diethylene glycol medium with hexamethylenetetramine as a reducing agent. The obtained rGO–ZnO nanocomposites were characterized by X-ray diffraction, and the ZnO lattice parameters were calculated. Raman spectroscopy indicated the presence of characteristic bands of graphene and …
Published in Journal of Polymer & Composites · Vol. 11, Issue 2, 2023 · pp. 70–80 Read article
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Influence of SiO2 Nanoparticles on the Structural, Morphological, and Optical Properties of CsPbBr3 Quantum Dots
Abstract: This work mainly investigates the structural and optical property differences between CsPbBr3/SiO2 quantum dots (QDs) and CsPbBr3 QDs thin films deposited on fluorine-doped tin oxide (FTO) glass. X-ray diffraction of CsPbBr3/SiO2 QD thin film showed a polycrystalline cubic nanostructure with (200) as a dominant phase and did not show any peak of SiO2. Scanning and transmission electron microscopy images show that it is very small spherical or semi-spherical particles with …
Published in Journal of Polymer & Composites · Vol. 11, Issue 2, 2023 · pp. 62–69 Read article
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Emerging Trends in Applications of Antimonide Semiconductor Alloys in Wireless Communications
Abstract: We investigate inter diffusion in Antimonide alloy hetero structures by means of bright-field transmission electron microscopy (TEM). Samples grown by metal organic molecular beam epitaxy (MOMBE) are subjected to thermal treatment under both In-rich and Sb-rich conditions. Concentration profiles of the group-III elements are determined by evaluating changes of thickness fringes of cleaved 90° wedge specimens on a nanometer scale. We present first results of our inter diffusion experiments and …
Published in Journal of Semiconductor Devices and Circuits · Vol. 2, Issue 2, 2015 · pp. 1–4 Read article
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Synthesis and Characterization of In2S3 Nanoflake Thin Film for Photosensor Applications
Abstract: Indium sulphide (In2S3) thin films in the form of nanoflakes are synthesized by using chemical vapour deposition method on glass substrate with the intension to test its photosensor applications. These as deposited nanoflake thin films are characterized for physicochemical properties using X-ray diffraction (XRD) pattern, energy dispersive X-ray (EDAX) analysis,scanning electron microscopy (SEM) while optoelectronic properties were studied using optical and electrical characteristics obtained through UV-Vis transmission spectroscopy and I-V …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 4, Issue 3, 2017 · pp. 21–26 Read article
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Comparative studies of Oxidation and hot corrosion behaviors of uncoated and detonation gun sprayed Cr3C2-25NiCr coating on SA-213 boiler steel at 8000C
Abstract: Fe-based alloys suffer oxidation and hot corrosion when the surfaces were in contact with air (oxidation) as well as the salty atmosphere (Hot corrosion) at elevated temperatures. In these atmospheric conditions, non-protective oxide Fe2O3 was formed on the surface of alloys. Oxidation and hot corrosion have been recognized as a major problem in the applications of the diesel engine, boilers, gas turbines, and chemical power plant etc. Detonation-gun sprayed Cr3C2-25NiCr …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 6, Issue 1, 2019 · pp. 17–22 Read article
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Corrosion Inhibition Effect of 1-(4-Methoxy-phenyl)-3-(5-phenyl-1,3,4-oxadiazol-2-yl) propan-1-one Inhibitor for Mild Steel in 1 M HCl Solution
Abstract: The environmental friendly 1-(4-Methoxy-phenyl)-3-(5-phenyl-1,3,4-oxadiazol-2-yl) propan-1-one (A1) inhibitor is synthesized and their corrosion inhibition for Mild Steel in a 1 M HCl solution was studied using weight loss methods, electrochemical measurements, and the surface morphology of mild steel with and without inhibitor were studied using scanning electron microscopy (SEM) analysis. As the concentration of the inhibitor was increased the inhibition efficacy of 1-(4-Methoxy-phenyl)-3-(5-phenyl-1, 3, 4-oxadiazol-2-yl) propan-1-one was also enhanced and on …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 8, Issue 2, 2021 · pp. 31–37 Read article
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Fabrication and Surface Modified Non-woven Calotropis gigantea Fiber Mat Reinforced Polypropylene Composites by Film Stacking Method
Abstract: Nowadays, there is a growing environmental consciousness and awareness about the need for sustainable development, which has led to growing interest in using natural fibers as reinforcement in polymer composites for synthetic fiber substitution. The current work deals with the effects of Calotropis gigantea fiber (CGF) content and chemical modification of CGF mats by treatment with sodium dodecyl sulfate (SDS) and SDS-pretreated benzoyl chloride on the fundamental properties of CGF-filled …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 9, Issue 1, 2022 · pp. 10–22 Read article
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Molebdate as Corrosion Inhibitor for Aluminium 356 In Acidic and Saline Media
Abstract: Corrosion processes are the cause of significant losses in industry. Organic, inorganic, and mixed material inhibitors have all been used to resist corrosion for a long time, but the environmental toxicity of organic corrosion inhibitors has driven a quest for inorganic corrosion inhibitors. The effect of molybdate as a new corrosion inhibitor on the corrosion of aluminium 356 in acidic and saline conditions was investigated using electrochemical and weight loss …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 9, Issue 1, 2022 · pp. 39–47 Read article
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A Study of the Effect of Sodium Hydroxide and Sodium Lauryl Sulfate Surface Treatments on Natural Fibers
Abstract: Due to its accessibility, environmental friendliness, renewability, CO2-neutrality, flexibility, low density, and low cost, natural fibre (NF) can have a significant impact on the area of fibre reinforced polymer composite (FRPC) as a reinforcing material. Banana fiber (BF)/calotropis gigantea fiber (CGF) could be a potential candidate for synthetic FRPC replacement. Plant derive banana and calotropis gigantea fibers are valuable NFs that are abundantly available in Bangladesh. The purpose of this …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 9, Issue 2, 2022 · pp. 1–11 Read article
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Influences of Surface Modification of Vetiver Fiber Reinforced Polypropylene Composites
Abstract: Plant-drive vetiver fiber (VF), a significant lignocellulosic fiber, can be included in polymers like polypropylene (PP) in dissimilar ways for attaining preferred features and structure. But its high levels of moisture absorption, poor wettability and inadequate adherence between the fiber and polymer matrix result in debonding with age. To develop the overhead attributes,adequate surface modifications are essential. In our current work, the VF surface was modified by mercerized treatment (MVF), …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 10, Issue 2, 2023 · pp. 30–44 Read article