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1952 articles for “char”
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Electro Less Duplex Nickel Coating and Tribological Characterization Under Elevated Temperature
Abstract: Electroless Ni-P (EN) coatings had previously demonstrated their ability to improve the tribological properties of the underlying substantial. This is due to its high hardness, fatigue strength, and chemical resistance. Nevertheless, the EN coverings' effectiveness at high temperatures, as well as their heat resistance, have yet to be evaluated. The current work investigates the tribological properties, namely friction and wear, of EN coatings at increased temperatures (100 ºC, 200 ºC, …
Published in International Journal of Electro-Mechanics and Material Behaviour · Vol. 1, Issue 1, 2023 · pp. 12–17 Read article
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Exploration of Mechanical Characteristics and Microstructural Analysis of Copper Matrix Composites with Hybrid Reinforcements via Muffle Furnace Sintering
Abstract: Metal Matrix Composites (MMCs) have drawn a lot of interest in the area of innovative materials because of how widely they may be used. Due to their extraordinary qualities, such as high thermal conductivity, higher temperature endurance, improved corrosion resistance, and great weldability, copper matrix composites stand out among them. These qualities make them desirable and promising materials for uses including heat exchangers, automotive parts, and electrical components. In this …
Published in Journal of Polymer & Composites · Vol. 11, Issue 12, 2023 · pp. 119–126 Read article
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Experimental Investigation on Heat Transfer Characteristics of Thermal Barrier Coating on Aero Engine Components
Abstract: The gas turbine blades play a crucial role in harnessing energy from the high-temperature and highpressure gas generated by the combustor. To withstand this challenging environment, turbine blades often employ super-alloys and incorporate new manufacturing technologies such as Direct Solidification (DS) and Single Crystal (SC). Additionally, the development of advanced ceramic Thermal Barrier Coating (TBC) is imperative to achieve higher operating temperatures (>1200°C). Therefore, the primary focus of this study …
Published in Journal of Polymer & Composites · Vol. 11, Issue 13, 2023 · pp. 50–58 Read article
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Study on a Supercritical Airfoil with Variation in Thickness for Improved Aerodynamic Characteristics in Transonic Regime
Abstract: In this research the steady state analysis of a supercritical airfoil is done to understand the flow physics at transonic Mach number regime for various thickness. The modeling of NASA SC (2) 0714 supercritical airfoil with various thickness values is done. The steady state analysis is carried out for different test cases in combination with different thickness, angle of attack and Mach number at 10 km altitude using density-based Reynolds …
Published in Journal of Polymer & Composites · Vol. 11, Issue 13, 2023 · pp. 122–134 Read article
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Effect of Nano-Additives on the Emissions, Performance, and Combustion Characteristics of Syzygium cumini (Jamun) Biodiesel Powered DI Engine
Abstract: Renewable and cleaner diesel engine fuel has received a lot of attention recently as a result of the depletion of fossil resources. To address this issue, biodiesel can be a potential substitute for diesel fuel. The finest B20 Jamun blends were combined with three different types of nanoadditives to create Syzygium cumini (Jamun) biodiesel, which was tested in a naturally aspirated diesel engine. Global researchers are starting to develop new …
Published in Journal of Polymer & Composites · Vol. 12, Issue 1, 2024 · pp. 77–82 Read article
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Evaluation of microstructure properties and characterization of fracture locus of AA5083 through equal channel angular pressing techniques
Abstract: In this investigation, a commercially available aluminium alloy called AA5083 was subjected to two passes of equal channel angular pressing utilising a route B_C at room temperature for this experiment. To evaluate the effect of AA5083, the microstructure, mechanical attributes, and wear parameters of the alloy were examined both prior to and subsequent to undergoing this technique. Using an optical microscope, microstructural investigations were performed on the pressed alloy's flow …
Published in Journal of Polymer & Composites · Vol. 12, Issue 1, 2024 · pp. 270–286 Read article
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Determining the Characteristics of Concrete Composed of Different types of Aggregates
Abstract: This study investigates the influence of recycled aggregates on the compressive strength of concrete designed for medium workability. Various replacement proportions of recycled aggregates (0%, 50%, 60%, and 100%) were examined using conventional mix design methods, specifically focusing on 10 mm recycled aggregates' impact. The specimens comprised 100% recycled aggregate, with a combination of 60% 20 mm and 40% 10 mm sizes. Compressive strength analyses were conducted at 7 and …
Published in Journal of Structural Engineering and Management · Vol. 11, Issue 1, 2024 · pp. 1–5 Read article
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Lignin-modified bitumen: Exploring characteristics and performance
Abstract: The surge in crude oil prices has sparked interest in finding efficient and cost-effective alternatives to bitumen, a binder used in road pavement. Bitumen, derived from crude oil distillation or natural deposits, is primarily utilized in pavement grade bitumen, accounting for 83% of its usage. However, traditional hot mix asphalt, which relies heavily on bitumen, emits significant amounts of CO2, CH4, and N2O, contributing to environmental concerns. To address these …
Published in Journal of Petroleum Engineering & Technology · Vol. 14, Issue 1, 2024 · pp. 24–30 Read article
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Synthesis and Characterization of VO 2+ doped SrMg 2 (PO 4 ) 2 Nanopowder by Solid State Reaction technique suitable for White LED material
Abstract: VO2+ doped SrMg2(PO4)2 nanopowder was synthesized by using solid state reaction (SSR) technique. Various experimental techniques have been performed on prepared sample. XRD analysis has revealed that prepared nanopowder is in monoclinic phase. The average crystallite size, micro strain and dislocation density evaluated and make an analogy with W-H plot method. SEM micrographs shows that agglomerated stone like structure and EDS spectrum shows elemental compositions of synthesized sample. FTIR spectrum …
Published in Journal of Polymer & Composites · Vol. 12, Issue 4, 2024 · pp. 95–110 Read article
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Characterization of Synthesized Heterocyclic Oxadiazole Derivatives Using Mass, UV, IR, and NMR Spectroscopy, Among other Spectroscopic Techniques: Review
Abstract: The current study synthesized and assessed 3-heteroarylazo 4-hydroxy coumarin derivatives' initial antibacterial activities in vitro against four distinct pathogenic bacterial strains, including Pseudomonas aeruginosa, Bacillus subtilis, Escherichia coli, and Staphylococcus aureus. Ampicillin, a common medication, was used to compare each compound's antibacterial properties. UV, IR, 1H NMR, mass spectroscopy, and X-ray diffraction examinations were used to analyze the compounds. By using UV–vis spectra, the solute-chromic behavior of these compounds was …
Published in International Journal of Photochemistry and Photochemical Research · Vol. 1, Issue 1, 2023 · pp. 28–33 Read article
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An experimental investigation of Prosopis Juliflora Biodiesel’s performance and emission characteristics
Abstract: Fossil fuels are currently in crisis due to their higher cost, their increasing use, and their scarcity. In view of the large number of cars on the road and the emission levels caused by combustion ignition engines, fuel substitutes are sought. Diesel is the most expensive fuel on the market, so biodiesel is a good alternative. Aside from its low toxicity, it reduces greenhouse gas emissions, does not emit sulphur, …
Published in Journal of Polymer & Composites · Vol. 12, Issue 3, 2024 · pp. 67–75 Read article
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Student Academic Achievement Forecast Based on Emotional Intelligence, Personality, Demographic Characteristics and Attitude Towards Education and Future Career
Abstract: This study was aimed at predicting students' academic achievement based on emotional intelligence of personality traits, attitudes to education and future career. The present study was a correlational-analytical study. The statistical population of Zanjan University students in the academic year of 1395-1395 was the sample of 489 people selected by cluster random sampling method. Academic Resilience Scale (ARI) and Schotte Emotional Intelligence Questionnaire and Researcher Attitude Questionnaire were used to …
Published in International Journal of Education Sciences · Vol. 1, Issue 2, 2024 · pp. 25–36 Read article
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Tb3+ activated Boro Phosphate Glass: Synthesis and Photoluminescence (PL) Characteristics
Abstract: The (40B2O3+ 3Al2O3+(10-x) P2O5 + xTb + 7ZnO+5LiCO3+ 10H6NO4P+25SrCO3) boro phosphate glass was successfully synthesized via melt quenching method. The structural confirmation is supported with X-ray diffraction (XRD) data and surface morphology was defined by scanning electron microscope (SEM). The (40B2O3+ 3Al2O3+(10-x) P2O5 + xTb+ 7ZnO+5LiCO3+ 10H6NO4P+25SrCO3) boro phosphate glass has been investigated for its Photoluminescence (PL) under UV excitation. At 544 nm, the excitation was observed, and at 222 …
Published in Journal of Polymer & Composites · Vol. 12, Issue 6, 2024 · pp. 43–47 Read article
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Synthesis and Characterization of Pyrazole Heterocyclic Derivatives via Vilsmeier-Haack-Reaction and its Schiff`s Bases.
Abstract: The synthesis of New Schiff bases (2; and 3a-c) is reported in this study. These bases were created by reacting -chloro-3-methyl-1-phenyl-1H-pyrazole-4-carbaldehyde (1) with various amines that contained various pharmacophore atoms or groups, such as derivatives of benzothiazole and aniline, in the hopes of having antimicrobial and antifungal properties. Using mild reaction conditions and a good yield percentage, mono-pyrazole Schiff bases (2 and 3a–c) were designed and synthesized by reacting 5-chloro--3-methyl-1-phenyl-pyrazole-4-carbaldehyde …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 15, Issue 3, 2024 · pp. 34–48 Read article
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Comparative analysis of carbon fibre and E-glass fibre characteristics
Abstract: In the contemporary automotive industry, the imperative focus on energy efficiency has driven the central role of lightweight, addressing challenges such as emissions reduction and fuel efficiency. Extensive research is underway to develop lightweight materials enhance recyclability, integration feasibility, and overall fuel efficiency These experiments were conducted in agreement with ASTM D638, ASTM D790-03, and ASTM D790 standards to ensure adherence to industry standards and facilitate meaningful comparisons. For the …
Published in Journal of Polymer & Composites · Vol. 12, Issue 5, 2024 · pp. 253–267 Read article
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Drilling Fluid Characterization (Filtration Test)
Abstract: This report explores the formulation and testing of a water-based drilling mud used in drilling operations, where fluid circulates through the drillstring and returns to the surface. The study mixes 315 ml of water with 35 ml of corn oil to create the drilling mud and investigates the role of barite in increasing mud density to maintain a hydrostatic pressure capable of managing formation pressure. The findings reveal that increasing …
Published in Journal of Petroleum Engineering & Technology · Vol. 14, Issue 2, 2024 · pp. 17–26 Read article
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Fabrication and Mechanical Characterization of Hybrid Metal Matrix Composite Castings
Abstract: This work investigates and addresses the casting of a novel hybrid composite material with tungsten carbide and aluminum-silicate particles mixed at varying weight fraction rates. Production of hybrid composite has some advantages if it is processed by near net shape techniques. The simplest method for dealing with this hybrid composite is the turbulence produced by the vortex agitating technique. The vortex mixing method is used in this study to create …
Published in Journal of Experimental & Applied Mechanics · Vol. 15, Issue 3, 2024 · pp. 32–38 Read article
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Drying Characteristics of Moringa (Moringa oleifera) Leaves
Abstract: Moringa oleifera belongs to Moringaceae family whose leaves carries bundles of nutrients and vitamins. In this study, moringa leaves were dried and quality was evaluated under different drying temperatures viz, 40, 50, 60, & 70ºC. The initial moisture content of the fresh moringa leaf was found to be 73.20 % on a wet basis or 273.0% on dry basis. In tray drying the final moisture content of dried moringa leaves …
Published in Research & Reviews : Journal of Herbal Science · Vol. 14, Issue 1, 2025 · pp. 15–23 Read article
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Charting the Path Forward: An In-Depth Analysis of Breakthroughs and Hurdles in Artificial Intelligence
Abstract: Recent years have witnessed tremendous progress in artificial intelligence (AI), fueled by exponential increases in processing power and data accessibility. These developments have made it possible for AI to be widely used in a variety of industries, such as healthcare, finance, autonomous driving, and more. Significant difficulties are presented by the "black-box" nature of many AI systems, which lack transparency and the capacity to explain. By encouraging algorithms that can …
Published in Recent Trends in Parallel Computing · Vol. 12, Issue 1, 2025 · pp. 13–23 Read article
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Characterization of Polymer Based Natural Fibre Clay Nano Composites
Abstract: Research on biocomposites is gaining significant attention due to the growing emphasis on sustainable and environmentally friendly materials. Biocomposites offer a promising alternative to traditional synthetic materials, such as plastics, which have environmental concerns like non-biodegradability and pollution. Natural fibers are often more affordable than synthetic materials, potentially leading to cost-effective products. Natural coir and jute biocomposites can be used in various industries, including automotive, construction, packaging, and textiles. Coir …
Published in Journal of Polymer & Composites · Vol. 13, Issue 1, 2025 · pp. 398–404 Read article