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345 articles for “Crystallized”
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Characterisation of FSW Joints of Aluminium and Titanium Alloys: A Review
Abstract: AbstractThis paper presents a review on friction stir welding of different aluminum and titanium alloys. Aluminum alloys are most widely used in automotive, aerospace and ship building industries as high strength-to-weight ratio materials. Titanium alloys are also attractive in these fields due to their high specific strength and good corrosion resistance. In some special applications, the complementary characteristics of Ti and Al are required, such as increased strength, low weight …
Published in Journal of Materials & Metallurgical Engineering · Vol. 8, Issue 3, 2018 · pp. 25–29 Read article
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Recovery of Tungsten and Copper from Waste Tungsten Copper Borings
Abstract: During the last many years, the unused tungsten and copper alloy from the discarded electric and electronic equipment and industrial scraps are gathering attention as a section of waste. Because of tungsten's many diverse uses, numerous types of scrap were available for recycling by a wide variety of processes. In the present study, tungsten and copper was recovered by leaching process in ammonium hydroxide solution followed by electro winning process. …
Published in Journal of Materials & Metallurgical Engineering · Vol. 7, Issue 1, 2017 · pp. 1–8 Read article
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Processing and Characterization of Ni2MnSn FSMA
Abstract: Among Ferromagnetic Shape Memory alloys (FSMAs), Ni2MnSn Heusler alloys owing to occurrence of large magnetic field induced strain (> 10%) along with other interesting properties like premartensitic transition, high transformation temperature, large magnetocaloric effect and low stress of twin variant rearrangement. The prominent challenges facing the design and utilization of these specialized alloys are a limited range of operating temperatures, phase transformations that have high sensitivity to variations in composition, …
Published in Journal of Materials & Metallurgical Engineering · Vol. 2, Issue 1-3, 2012 · pp. 154–159 Read article
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Principles and Use of Analytical Transmission Electron Microscope
Abstract: At the beginning of the review the analytical Transmission Electron Microscope is introduced. Equipment, imaging, diffraction and use of analytical TEM are described. Electron path under magnetic lens is delineated, emphasizing the lens aberrations, diffraction, astigmatism and gun brightness. Selected area electron diffraction patterns of Al-Cu and Inconel super alloy are used to index crystallographic planes and to derive zone direction while basic sources of diffraction contrast are depicted using …
Published in Journal of Materials & Metallurgical Engineering · Vol. 9, Issue 3, 2019 · pp. 27–49 Read article
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Optical Properties of Barium Borate (BaB2O4)Compound for Current Optoelectronic Applications
Abstract: In this work,Barium borate was prepared by sol-gel synthesisdepending on different molar (0.1, 0.2, 0.3 0.4 and 0.5) molar. Barium borate is an inorganic compound, and it was useda borate of barium with a chemical formula BaB2O4 or Ba(BO2)2 It is available as hydrate or dehydrated form, as white powder or colorless crystals. The optical characteristics of the prepared samples have been investigated by UV/Vis spectrophotometer in the wavelength range …
Published in Journal of Materials & Metallurgical Engineering · Vol. 10, Issue 1, 2020 · pp. 49–58 Read article
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Origins of Several Foam Ample Forms in Materials Science
Abstract: Foam culture refers to the light weight philosophy for the additional subject released from appropriate specific performance in relation to the environment. Regular study has been done to actualize the subject required under ballistic strength of degeneration issues. The cases studied in this article were from polymer functional ceramic issues as well as originating flexible regions. Though, water-purification areas on the coast have origins Ni-nano that uses carbon-tubed analogs to …
Published in Journal of Materials & Metallurgical Engineering · Vol. 10, Issue 3, 2020 · pp. 32–36 Read article
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Synthesis and Characterization of Nickel doped Barium Niobate Ba (Ni0.5Nb0.5)O3 (BNN) Nanomaterial
Abstract: AbstractFerroelectric materials are of great interest for researchers worldwide, because of their unique physical properties and wide range of applications. The composite nanomaterial Ba(NiNb)0.5O3 (BNN) was synthesized by conventional solid state reaction method. The structural characterization was done by x-ray diffraction (XRD). The research was carried out to investigate structural properties of BNN nanomaterial as a function of sintering duration. BNN was sintered at 10000C and different samples were prepared …
Published in Journal of Microelectronics and Solid State Devices · Vol. 5, Issue 2, 2018 · pp. 29–33 Read article
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Mechanisms and Applications of Lyoluminescence
Abstract: When strongly energized halide or organic crystals are dissolved in а liquid solvent like water, light is emitted as an end result of а recombination process. This emission of light is known as Lyoluminesсenсe0. The emitted light intensity, called the Lyoluminescent intensity, depends on а class of factors like radiation doses, probability of radiative recombination, rate of dissolution inside the solvent, etc. The effect is enhanced when the materials have …
Published in Journal of Nuclear Engineering & Technology · Vol. 12, Issue 1, 2022 · pp. 1–6 Read article
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Preparation and Charactrization of lead free piezoelectric ceramic/PVA polymer composites
Abstract: Sodium potassium niobate (Na0.5K0.5 NbO3 ) ceramic was prepared through conventional solid state reaction using AR grade NaNO3, KNO3 and Nb2O5 in stochiometric ratio. Poly vinyl alcohol (PVA) polymer - sodium potassium niobate composite films were prepared by solution casting method by changing the blend ratio of PVA / Na0.5K0.5NbO3. The prepared samples in the form of films were characterized by powder X-ray diffraction. The XRD studies revealed the presence …
Published in Journal of Polymer & Composites · Vol. 6, Issue 1, 2018 · pp. 1–8 Read article
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To explore the effect of polyethylene glycol additive on mechanical and gas permeation properties of polyvinyl alcohol membranes
Abstract: Polyvinyl alcohol (PVA) membranes were prepared by solution casting and blended with Polyethylene glycol (PEG) in de-ionized water which led to the formation of porous and flexible membranes. Extensive experimentation were performed, in order to find out that at what composition of PEG pores will be generated in the PVA membranes. The PVA polymer is a hard and crystalline thermoplastic so high concentrations of PEG were used, i.e. 40 wt%, …
Published in Journal of Polymer & Composites · Vol. 7, Issue 1, 2019 · pp. 27–33 Read article
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Synthesis of Polyorthanisidine by Interfacial Polymerization
Abstract: AbstractPolyorthoanisidine has been synthesized by interfacial polymerization method. O-anisidine has been used as a monomer, hydrochloric acid is used as a dopant and ammonium persulphate as an oxidiser. The solvent used for the study is chloroform, isopropanol, hexane and xylene. The polyorthoanisidine obtained is characterized for particle size analysis. It is observed as with xylene as a solvent the least particle size has been observed with Z average value of …
Published in Journal of Polymer & Composites · Vol. 5, Issue 1, 2017 · pp. 1–6 Read article
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Electrical Conductivity and Antibacterial Studies on Chemically Synthesized Poly (2-Methyl Aniline-co-2-Chloro Aniline)-Blend-Polyurethane
Abstract: AbstractElectrically conducting copolymer blend, poly (2-methyl aniline-co-2-chloro aniline)-blend-polyurethane has been synthesized chemically by oxidative polymerization technique using 0.3 M ammonium persulphate (APS) as oxidant, 0.1 M of the anionic surfactant, sodium lauryl sulphate and 1 M HCl as dopant. The formation of the copolymer blend has been confirmed by comparison with the spectral data obtained for the copolymer which was synthesized under the same conditions and characterized. The copolymer blend …
Published in Journal of Polymer & Composites · Vol. 5, Issue 1, 2017 · pp. 7–14 Read article
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Infrared Spectroscopic Studies on Multiwalled Carbon Nanotubes Reinforced Acrylonitrile Butadiene Styrene Composites
Abstract: AbstractFourier Transformed Infrared (FT-IR) Spectroscopic analysis is an effective technique to captures the response of the molecular motions such as stretching, bending and torsional vibrations of materials. In this study, FTIR analysis has been done on two different grades of multiwalled carbon nanotubes (MWCNT) C100 and NC7000. NC7000 grade MWCNT has a higher degree of crystalinity and shows 60% higher absorbance in the wavelength range of 600-3600 cm-1. These two …
Published in Journal of Polymer & Composites · Vol. 2, Issue 3, 2023 · pp. 15–22 Read article
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Ionic Conductivity of Chain Extension Supramolecular Polymer Material based on Reactive Hydrogen Bonding Motif
Abstract: AbstractSelf-assembly of low molecular weight oligomers possessing good mechanical properties at room temperature and having a low melt viscosity at elevated temperatures are of interest for many applications, such as hot melts and thermoplastic elastomers. Association between end groups can be based on a variety of secondary interactions, such as Vander Waals, hydrophobic, ionic interactions, or hydrogen bonding. A low molecular weight poly (ethylene glycol) (PEG) was functionalized with 2-Ureido-4[1H] …
Published in Journal of Polymer & Composites · Vol. 2, Issue 1, 2023 · pp. 30–36 Read article
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Studies in Effect of Methyl Methacrylate to Butylacrylate Ratio on the Properties of TiO2/poly(methyl methacrylate-co-butylacrylate) Core–Shell Composite Nanoparticles Prepared by Microemulsion Polymerization
Abstract: AbstractTitanium dioxide, as a core, was coupled with the poly(methyl methacrylate-co-butyl acrylate) using amino propyltriethoxy silane as a coupling agent. A two-stage semi-continuous microemulsion polymerization method was used for the synthesis of these core–shell nanoparticles. Ratio of methyl methacrylate to butyl acrylate was varied in the shell of the nanoparticles and the prepared core–shell composite nanoparticles were characterized by Fourier transform infrared spectroscopy, X-ray diffractometer, differential scanning calorimetry, scanning electron …
Published in Journal of Polymer & Composites · Vol. 1, Issue 3, 2013 · pp. 32–39 Read article
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Studies in Effect of Alumina Nanoparticles on the Properties of Unplasticized Polyvinylchloride (PVC)
Abstract: AbstractUnplasticized polyvinylchloride (PVC)/nano-alumina composites were prepared using high- speed mixer, two-roll mills and compression molding. In the composite, the concentration of nano-alumina was varied from 0 to 7 phr (parts per hundred). The prepared composites were characterized for mechanical, thermal, electrical, crystallinity and morphological properties. Optimal improvement in properties was obtained at 5 phr concentration of nano-alumina in the PVC matrix. Tensile strength, tensile modulus, flexural strength, flexural modulus and …
Published in Journal of Polymer & Composites · Vol. 1, Issue 2, 2013 · pp. 27–34 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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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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Role of Bimetallic (Ag-Cu) Nanoparticles on the Structural Properties of PVA/PVP Blend Green Nanocomposites
Abstract: This study reports the green synthesis of polymer blend nanocomposites of Polyvinyl alcohol (PVA) and Poly vinylpyrrolidone (PVP) embedded with Silver (Ag), Copper (Cu) mono metallic and Silver-Copper (Ag-Cu) bimetallic nanoparticles (NPs), generated using plant mediated solution casting method. The formation of blend, polymer-polymer interactions, interaction between polymer and nanoparticles and role of the nanoparticles on the interactions among PVA/PVP blend nanocomposites were studies by FTIR spectroscopy. The crystallinity of …
Published in Journal of Polymer & Composites · Vol. 10, Issue 1, 2022 · pp. 11–19 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