In this paper, the sliding wear behaviour of WC–20Cr3C2–7Ni and lanthanum (III) oxide (La2O3) composite coating is investigated. The influence of lanthanum (III) oxide is evaluated by varying its proportion (1, 2 and 3 wt%) in WC–20Cr3C2–7Ni coating material. The high-velocity oxy-fuel (HVOF) technique is used to deposit the coatings on AISI 1020 carbon (C) steel. The mechanical strength and metallurgical

Portland cement–aluminate cement–gypsum is a very complex gelling system and is currently widely used in various repair projects. Due to the influence of the construction environment, the system is greatly affected by temperature, and the main hydration product, ettringite, is volatile. Therefore, to test the fluidity, setting time and compressive strength of the ternary system at 20, 40 and 80°C,

The effect of alkali metal doping on the electrical conductivity of Li3(1−x)Na3x VO4 (x = 0.0, 0.2, 0.4 and 0.6) is the axiom of this paper. The samples are synthesized using the conventional solid-state reaction technique. The X-ray diffraction results show the polycrystalline behavior of alkali-doped lithium vanadate (Li3VO4). It was also observed that sodium (Na+) ions have not shown their presence

Due to the increase in industrialisation and urbanisation in the world, pollution rates are increasing day by day. The world may become uninhabitable soon due to the increasing pollution rates. Thus, the issue of recycling waste generated during production has gained great importance, and many studies have been initiated on the recycling of waste materials. In this study, the waste generated during

Increasing customer satisfaction by producing quality products at a low cost is an important issue for businesses. For this reason, companies have to choose suppliers that will best meet their and their customers’ requests. Besides, many factors such as increasing the importance given to the environment, increasing the recycling rate of the products and ensuring sustainability are in an important position

The present research proposes a method that can identify tumour cells present in the human breast with the help of a plasmon-based three-dimensional (3D) photonic structure. The mechanism of detection of cells (tumour or normal) is realised through the analysis of the photonic bandgap of the proposed copper-based plasmonic structure. Moreover, the plane-wave expansion technique is applied to find the

The side effects of chemotherapeutic drugs on healthy organs, as well as cancer cells, are one of the main reasons for the high mortality rates of cancer patients. Controlled drug release studies with biocompatible nanoparticles are becoming increasingly important to prevent drawbacks of traditional chemotherapy treatment. In this study, it is aimed to entrap doxorubicin (DOX) into albumin nanoparticles

The current paper is about the descriptions of the topography and compositional, optical and structural characteristics of cost-effective and non-toxic titanium dioxide (TiO2) thin film deposited using the chemical bath deposition (CBD) method on a glass substrate for the transparent conductive oxide layer in solar cell application. The specimens were characterized by various instrumentation techniques

For most modern hip joint implants, metal-on-plastic pairs are preferred over metal-on-metal ones, where cobalt (Co)–chromium (Cr) alloy and ultrahigh-molecular-weight polyethylene (UHMWPE) are commonly used as the femoral head and socket, respectively. In such implants, the durability of the UHMWPE component is not up to the mark due to severe wear. This study presents better tribological performance

In this work, a nanoemulsion-based delivery system was developed by encapsulation of different concentrations (0.50%, 0.75% and 1.00% v/v) of oregano essential oil (OEO) within poly(vinyl alcohol). The delivery systems (OEO-loaded nanoemulsion systems (NESs)) were characterized in terms of size distribution, zeta potential and thermal, molecular, microstructural and antifungal properties. The average

Undercutting is a welding defect that appears as a groove in the base metal directly along the edges of the weld metal. It is inevitable in fillet and butt joints if improper welding parameters are used in the operation. It is a discontinuity in the welding that produces stress concentration and lowers the strength of the weld. The stress concentration factor of an undercut is due to the reinforcement

The friction force in mechanical systems not only reduces their efficiency but also causes wear in the machine components, resulting in financial losses. As in every sector, in agricultural production, the problem of abrasion, particularly in soil tillage, is extremely important. Studies have been conducted examining the different methods for minimizing wear on tillage machinery. In this study, the

Nowadays, autoclaves are widely used for industrial applications such as composite material production, laminated glass production and rubber industry. An autoclave is pressurized and heated up according to its special recipes, which are prepared by considering the technical specifications of the interlayer material and the types and thickness of the glass sheets. During the entire laminated glass

In this study, the three-point bending behavior of aluminum sheets with three different V-notch lengths repaired with a nanocomposite patch was experimentally investigated. Two different types of repair procedures, single-sided and double-sided, were applied to the notched plates. The nanocomposite materials used in patching have a carbon/epoxy/multiwalled carbon nanotube–OH structure. 5754 series

Some medieval ceramic finds obtained from Zeytinli Island (Erdek, Turkey) excavations were examined using archeometry techniques. First of all, the color values of the ceramics samples, which were coded and photographed, were determined using the Munsell color system. Morphological structures, chemical and mineralogical contents of the samples were determined by Scanning Electron Microscope/ Energy

In this experimental study, the low velocity impact behavior of aluminum-kevlar laminates (ARALL) was investigated. ARALL composites were prepared in two different configurations as aluminum-kevlar-aluminum (AKA) and kevlar-aluminum-kevlar (KAK). The aluminum alloy used in the preparation of the samples was supplied as 5754 series 2 mm thick plate. Kevlar fabrics were supplied in a weight of 200 gr/m2

The solutions to the increasing problem in the energy demand of the world has been expected from the building sector with consumption of high amount of energy. Producing environmentally friendly and energy efficient blended cements and using materials with high thermal performance in terms of insulation and thermal energy storage in buildings are some of these solutions. Calcined marl at optimum temperature

In this study, a thermoelectric ice machine (TEIM) with a heat pipe was designed to save water and energy in ice making. Traditional ice machines have a long ice-making time. That is why they make ice and expend energy to maintain the ice form. Since the ice made is hand-harvested, it is likely to be contaminated. The proposed system saves energy by making ice fast when needed and saves water by making

The present study investigated the physical and neutron- and gamma-ray-shielding features of a sodium oxide (Na2O)-doped lead (Pb)–silicate glass system. The chemical composition of the glass system is described by the formula xNa2O–50SiO2·(50 − x)PbO, where x = 0, 10, 20, 30, 40 and 50 mol%. Moreover, the shielding features were investigated by utilizing the Geant4 simulation code and the Xcom program

Advances in molecular and genetic technologies have enabled the study of mutation and molecular changes in gliomas. The 1p/19q coding state of gliomas is important in predicting pathogenesis-based pharmacological treatments and determining innovative immunotherapeutic strategies. In this study, T1-weighted and T2-weighted fluid-attenuated inversion recovery magnetic resonance imaging (MRI) images of

The aim of this work is to develop new-generation ultra-high-performance fiber self-compacting concretes (SCCs) by introducing pyrophyllite rock powder as a cement substitute and assess its effects on the fresh and hardened properties. Three series of concretes were developed. The first series of reference fiber SCCs without pyrophyllite contained 1% adherent steel fibers or 1% slippery polymeric polypropylene

In this paper, the effective coefficients of piezoelectric fiber-reinforced composites are determined through two micromechanics methods. The exact solutions are derived to predict the effective electro-elastic coefficients with modifications in the conventional strength of materials approach and strain energy approach to account for the effects of fiber packing arrangements and orientations on these

Voltage source and current source converters are used in industrial applications as either boost or buck converters for a defined power flow direction. These operational modes limit these converters to be utilized on their own in hybrid and electric vehicle (EV) applications. Z-source (impedance source) converters, on the other hand, have the capability to be operated as buck and boost converters to

Essential oils (EOs) are one of the most promising bioactive agents obtained from different aromatic plants that can show important antimicrobial activities. In this study, it was aimed to fabricate poly(vinyl alcohol) (PVA)–chitosan nanoparticles (NPs) loaded with Origanum vulgare (ONPs) EO at different proportions using the electrospraying technique. In a large number of biological, medical or pharmaceutical

Interest in medicinal and aromatic plants is increasing day by day with the increasing demands of people for natural materials. Because these plants are both environmentally friendly and antiallergenic, they are widely used in many fields, one of which is the medical textile industry. This publication is the first part of a study designed in two parts. The first part includes working with tea tree

Recently, intensive attention has been paid to environmental concerns for securing a more sustainable future. In particular, numerous research studies have been directed toward emerging green materials for minimizing carbon dioxide footprint. In this work, the authors aimed to fabricate an environmentally friendly cement by implementing partial addition of calcined clays in place of clinker. The clay

In this study, 6063 aluminum plates with ‘O’ and ‘U’ notches were patched with E-glass/epoxy composites. In this context, O and U notches were made using an aluminum computer numerically controlled machine. Then, composite patches were produced through the hand lay-up method and hot-pressing. The 36 × 40 mm patches were water-jet-cut from E-glass/epoxy plates. The notched aluminum surfaces were cleaned

Microstructural characterization of aluminum (Al) 6063 nanocomposites plays a vital role in the field of materials engineering. Many of the earlier research studies showed that the evolution of aluminum 6063 stabilized the application in various fields of engineering and sciences. The present research focused on probing aluminum 6063 nanocomposites using X-ray diffraction (XRD), transmission electron

Generally, composites are sensitive to transverse impact loading because there is no through-thickness reinforcement for these materials. Specifically, type IV composite pressure vessels and cylinders are more susceptible under impact loading because of the presence of a plastic liner. The main challenges related to the existing composite pressure vessel materials are low toughness, low damage tolerance

Clove essential oil (CEO) was added to Salvia hispanica mucilage–protein-rich fraction in an attempt to design a natural and biodegradable packaging film with good physical, optical and mechanical properties. The effects of polymer concentration (PC) (1.0–3.0%, w/v), CEO concentration (0.1–1.0%, v/v) and pH (7–10) were evaluated using a face-centered central composite design. The films corresponding

Metal-on-polyethylene (MoP) hip replacements with a CoCrMo alloy femoral head and an ultrahigh-molecular-weight polyethylene (UHMWPE) acetabular cup are strongly preferred due to their high clinical success. Despite this success, the wear of the bearing surfaces that causes a reduction in the prosthetic use of joint prostheses is still a baffling problem that cannot be solved. Although much research

The present paper reports eco-friendly preparation of a mesoporous phytoreduced graphene oxide (rGO)–zinc oxide (ZnO) nanohybrid (NH) using the leaf extract of Clerodendrum infortunatum as a green reducing agent at room temperature. The as-synthesized rGO–zinc oxide NH was characterized by diverse analytical techniques such as X-ray diffraction (XRD), Fourier transform infrared spectroscopy, energy-dispersive

In this study, the authors report the synthesis of a new Mannich base formed by the condensation of pyrrole (C4H5N), 4-hydroxybenzaldehyde (C7H6O2) and phthalimide (C8H5NO2) and the respective copper (II) (Cu2+), nickel (II) (Ni2+) and cobalt (II) (Co2+) transition metal complexes derived from the ligand. The synthesized ligand and the metal complexes were characterized using elemental analysis, electrical

Due to the environment-friendly properties of palm fiber, its use was attempted to improve the quality of soil together with lime. Unconfined compressive tests were carried out on soils mixed with palm fiber and lime under the three curing conditions of immersion in water, cyclic wetting–drying and air-curing for a series of contents of additives. The static stiffness of five types of samples (the

The present study aims to evaluate the effect of the monomer-to-comonomer ratio (1.00, 1.25, 1.50, 1.75, 2.00) on the swelling kinetics and diffusion behavior of a hydrogel. In this study, hydrogels with different ratios were prepared by inverse suspension polymerization using acrylic acid (AA) as the monomer and acrylamide (AM) as the comonomer with a fixed amount of AM. The chemical, morphological

Phenolic resin novolac matrix composites encapsulating processed construction and demolition waste micropowder of different grain sizings were manufactured using the appropriate molding techniques and were then studied. Characterizations by means of scanning electron microscopy, as well as elemental analysis by way of energy-dispersive X-ray analysis, were carried out. Additionally, the mechanical

In this paper, the results of a recent study on the environment-induced damage behavior of aluminum (Al) alloy 2024-T3, which is often a preferred choice for use in a spectrum of aircraft structural applications, are presented and discussed. Accelerated corrosion tests by way of exposure of test specimens of the alloy to an aggressive aqueous environment were carried out at ambient temperature (27°C)

Hammer mills are widely used for grinding grain products. Screens are one of the important machine components that affect the performance of hammer mills. Generally, round-hole screens are used in hammer mills. In this study, the effects of oblong- and round-hole screens on hammer mill performance were investigated. The results showed that the mean geometric diameter, geometric standard deviation,

In this paper, the results of a recent study on the environment-induced damage behavior of aluminum alloy 2024-T3, which is often a preferred choice for use in a spectrum of aircraft structural app...

Clove essential oil (CEO) was added to Salvia hispanica mucilage-protein rich fraction in an attempt to design natural and biodegradable packaging film with good physical, optical and mechanical pr...

Microstructural characterization of Al6063 Nanocomposites plays a vital role in the field of Materials Engineering. Many of the earlier researches showed that the evolution of Al6063 stabilized the...

Hammer mills are widely used for grinding grain products. Screens are one of the important machine components that affect the performance of hammer mills. Generally, round hole screens are used in ...

A Nd-Hg complex [Nd(IA)2(H2O)3(NO3)(HgCl2)] n ·2nH 2 O·nEtOH (1; IA is isonicotinic acid anion) was synthesized and characterized. Compound 1 is of monoclinic system, space group C2/c with a = 25.4...

Aluminium (Al)-based metal matrix composites were developed with titanium carbide (TiC) and boron carbide (B4C) materials as reinforcement. The weight percentages of titanium carbide (1.5%) and boron carbide (0.5%) powder were maintained throughout the process of composite development. Composite process parameters such as powder compaction pressure, sintering temperature and time were varied in different

Structural instability, which is often referred to as buckling, is a major concern for the safe and reliable design of composite structures. Thin-walled composite structures are vulnerable to buckling. The problem is exacerbated when a hole in a thin-walled composite structure significantly reduces the buckling strength of the structure. Therefore, the objective of the current research is to reduce

Fly ash is the main solid waste produced from coal-fired power plants, which has been extensively used as a mineral admixture for concrete and cement. In this paper, the effects of fly ash on the compressive strength, water resistance, setting time, phase composition and microstructure of magnesium oxysulfate (MOS) cement modified with 0.5% sodium dihydrogen phosphate (NaH2PO4) were investigated. X-ray

The use of recycled coarse aggregate (RCA) in natural aggregate concrete is a sustainable solution to the problem of solid waste worldwide. The effects of RCA gradation, RCA content, fly ash content and water–cement ratio (w/c) on mechanical properties of RCA are studied in this paper. The stress–strain curves of each specimen under 28 days axial loads were obtained by experiments. Through the stress–strain

The present investigation was carried out to study the effect of fibre orientation and fibre loading on the flexural properties, free-vibration characteristics and moisture absorption behaviour of Sida acuta-fabric-reinforced epoxy matrix composites. S. acuta composites were fabricated to 0, 24, 28 and 32 wt.% fibre loadings with each having 0°/90° and ±45° fibre orientations using the hand lay-up

A neodymium (Nd)–mercury (Hg) complex [Nd(IA)2(H2O)3(NO3)(HgCl2)] n ·2nH2O·nEtOH (1; IA is isonicotinic acid anion) was synthesised and characterised. Compound 1 is of monoclinic system, space group C2/c with a = 25.4224(12), b = 8.1410(3), c = 22.2963(9) Å, β = 90.788(4)°, V = 4614.1(3) Å3, C14H24Cl2HgN3NdO13, Z = 8, M r = 858.09, D c = 2.471 g/cm3, S = 1.120, μ(Mo Kα) = 9.174 mm−1, F(000) = 3256

Sulfate erosion is one of the important factors causing the decline of concrete durability, and it is also one of the most environmentally damaging and most influential environmental erosion. In vi...

The gamma photon and neutron shielding effectiveness of borosilicate glasses with alumina in the chemical structure 40SiO2.10B2O3.xBaO.(45 − x)CaO.5Al2O3.yZnO.zMgO glasses (20 ≤ x ≤ 40 mol% and y =...

Cu4Cl4(2,2′-bpy)2 (1) (bpy = bipyridine) was obtained and characterized. It crystallizes in triclinic system P(-1) space group. It is a discrete motif. Cu1 is bound by two nitrogen atoms and two ch...

In 2005, Dennard Scaling which had hitherto delivered the performance enhancement of IC Chips completely collapsed. Hence the need for new material and material research emerged. Graphene 2D has em...

In this study, a novel crash box idea was presented, including a step-by-step collapsible structure by joining coaxial tubes with gradual bonding surface areas. This telescopic crash box absorbed i...

In this study, fully recyclable and elastic-plastic deformable sandwich panels were developed by considering the mass production requirements as well as the light-weighting needs of the automotive ...

Unbleached cellulose obtained from corncobs were used to synthesize cellulose nanocrystals (CNC). Corncobs are an agro-industrial residue has a high cellulose content and can be used as a raw mater...

The study was aimed to develop low cost composites with high specific strength and better performance by incorporating agro waste as reinforcements. Stir casting technique was adopted for fabricati...

Based on a pseudopotential approach under a modified virtual crystal approximation that includes the alloy disorder effect, the elastic constants and some of their related mechanical properties of ...

Although a technologically interesting characteristic of boriding is the production of a hard, wear-resistant layer on the treated steel parts, thermal residual stresses may lead to crack formation...

The effect of alloy disorder on direct and indirect band gap energies in CdS x Te1−x semiconducting alloys has been investigated. The calculations are performed using a pseudopotential approach wit...