Selective laser melting (SLM) is a new 3D printing technology capable of directly manufacturing metal end products and near-end products. Currently, the processing of Ni-based alloy powders by SLM technology have not been reported yet. For this consideration, this paper lays the foundation for developing relevant SLM technology by experimenting with GH4169 Ni-based alloy powders using an LWY400P laser

The use of lightweight, functional, and eco-friendly building materials can reduce energy consumption and pollution levels. Aluminum alloys with low density, high specific strength, excellent functional properties, and 100% recyclability make excellent building materials. Lightweight structures are crucial for safety, especially for mitigating losses during natural disasters. Lightweight structures

In the present study, boron carbide (B4C) and boron nitride (BN) nanoparticles combined in equal proportions and reinforced into aluminium 7010 alloy with 0–2.5 wt.% nanoparticles in intervals of 0.5 wt.% were prepared using the ultrasonically assisted stir-casting technique. Microstructural characterisation of the composites was carried out by using a scanning electron microscope and an X-ray diffractometer

Graphene is a (2 + 1)-dimensional quantum electrodynamic system. The carriers have a vanishing mass and a relativistic velocity of 106 m/s, obeying charge-conjugate parity time symmetry. Graphene exhibits the Klein paradox, due to which, through spatial confinement, a bandgap can be opened in zigzag graphene nanoribbons for logic applications. The high Debye temperature of 2800 K ensures that phonons

The influence of multiple factors – namely, cement type, cement strength grade, cement content and water–binder ratio – on the basic performance, including the slump and early compressive strength, of basic magnesium sulfate (MgSO4) cement (BMSC) concrete was researched. In addition, multiple non-linear regression models of the basic performance of BMSC considering the raw materials and mix proportions

Achieving good material removal rate (MRR) along with better surface roughness is a challenging task for the present machining industry. The present study proposes Taguchi-method-based multiple-response grey relational analysis to find the optimal combination of machining parameters for maximum MRR and minimum surface roughness (R a) in wire electro-discharge machining (WEDM) of EN 47 spring steel

Ni-based catalysts supported by different active carbons were prepared and used for vapor phase carbonylation of ethanol. Microstructural properties of carbon supports were well investigated by physical adsorption of nitrogen, X-ray photoelectron spectroscopy, infrared spectrometry, Boehm titration and scanning electron microscopy. Catalytic activities of Ni/C catalysts were also studied. The results

In order to improve the durability of coral aggregate seawater concrete (CASC) structures, the influences of exposure time, concrete strength, concrete cover thickness, steel type and inhibitor addition method on the steel corrosion behavior of CASC were investigated and the law of steel corrosion in CASC was obtained. This showed that the steel anticorrosion capacity of CASC structures in the marine

The interaction of deoxyribonucleic acid (DNA) with polymeric nano- and microcarriers has attracted significant attention in the studies on DNA diagnostic assays, DNA isolation and particularly gene delivery and cancer therapy agents. Therefore, in this study, plain poly(glycerol dimethacrylate) (poly(GDMA)) and poly(dimethylaminoethyl methacrylate)-grafted poly(GDMA) microgel particles were synthesized

Eighteen years ago, the automotive industry started using the friction stir spot welding (FSSW) process in joining of metallic parts. The popularity of this welding process enlarged every year. In this study aluminum 1020 sheets of 2 mm thickness were joined with the FSSW process. The effects of FSSW parameters (plunge depth, tool rotation speed and dwell time) on the mechanical properties of weldments

To investigate the durability of magnesium oxychloride-coated reinforced concrete (MOCRC) and the deviation from the natural corrosion process of the electrified accelerated corrosion test in reinforced concrete. We used the electrified accelerated corrosion test with saline soil as an electrolyte. A quality test, dynamic elastic modulus test, crack-width test, electrochemical performance test and

The abundance and the versatility of the cellulose structure based on the route of modification have attracted many researchers in the scientific community. Cellulose can be taken from many natural sources, but the largest source of natural cellulose is plant parts. Chemically treated cellulose can show properties that are not displayed by untreated natural cellulose. In this study, cellulose was treated

The main objective of the current experimental work is to determine the mechanical properties of borassus fruit fiber (BFF)-based composites and compare the mechanical performance of composites fabricated with different chemically treated BFF. The BFF was treated with (a) sodium hydroxide (NaOH), (b) benzoyl chloride (C6H5COCL), and (c) acetyl chloride (CH3COCL) and compared the surface morphology

Carbon fiber reinforced polymer (CFRP) composite has received extensive attention in aerospace, weapon equipment, communications electronics, transportation and other fields. The improved compression molding process is one of the most advantageous processes for preparing CFRP composite. It is important to understand the effects of molding process parameters, especially temperature parameters, on the

The microstructure and performances of GH4169 Ni-based alloy were studied after adding rhenium (Re) and wolfram (W) elements and then conducting heat treatment. The alloy containing Re element showed less δ phase after heat treatment. For both alloys containing W element and the GH4169 alloy without any element, δ phase and rectangular carbide were all precipitated after the heat treatment. The creep

The influences of hybrid particles SiC and Al3Ti on the micromorphology, density, porosity, hardness as well as wear properties for the hybrid 7075 aluminum composites fabricated via stir casting method were examined. In the case of the fixed addition of Ti to the hybrid 7075 material, the results show that the particle size of in-situ formed alloy Al3Ti decreases gradually with the increase of the

CuIn1−xGaxSe2 (CIGS) thin-film has examined as an absorber layer for the solar cells because of the suitable absorption value, stability and economic in manufacture. CIGS thin films belong to the I-III-VI2 group of the periodic table with the appropriate direct bandgap (1.5 eV). In this study, the CIGS thin films were annealed at ∼200°C for four different annealing times durations (15, 30, 45 and 60 min)

This experimental and statistical study focuses on investigation of effects of machining parameters on surface roughness (SR) and material removal rate (MRR) in wire electrical discharge machining (WEDM) of hard copper alloy. Experimental design was carried out using L18 (21x32) orthogonal array according to Taguchi method. Process parameters were considered as wire type, pulse time, and duration between

CdS thin films were produced using the chemical bath deposition method with thiourea as the source of S. 2.4 mmol CdCl2, 0.15 mol KOH, and 0.16 mol NH4NO3 were dissolved in 100 ml deionized water. Thiourea was added to the final solution at intervals of zero, 1.5, three, six and nine minutes. The effects of delaying the addition of thiourea were investigated. The optical properties of CdS thin films

Fusarium stalk rot (FSR) caused by Fusarium verticillioides (=moniliforme) significantly affects the productivity of maize (Zea mays L.). The aim of the study was to determine the effect of Trichoderma harzianum, mycorrhizal fungi (Glomus spp.) Aspergillus niger and Bacillus subtilis for biocontrol poterntial of FSR using dual culture bioassays and greenhouse bioassays on maize. As a result, Trichoderma