Materials Literature
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A series of ballistic tests were performed to investigate the bulletproof performance of UHMWPE composites. The temporal evolution of the UHMWPE composite plate back-face bulge height and diameter were captured by high-speed photography. The experiments show the composite plate were perforated when the impact velocity…
A comparative analysis of the structural, electronic, mechanical, and magnetic properties and relative stability has been carried out in terms of ab initio calculations for four possible polymorphic modifications of rhenium dinitride, whose nonmetallic lattices contain both individual nitrogen atoms and dimers N2. It…
Bismuth borate glasses doped with cerium in the composition 50Bi2O3:(50-x)B2O3:xCeF3 were prepared for the composition range 0x2.5 (in mol%). The glass samples have been fabricated by the conventional melt quenching technique. The physical and optical properties of glass samples were investigated. The optical absorpti…
Thermodynamic analysis is performed (TERRA software) of the lime-silica interaction for all possible lime-to-silica ratios at normal pressure. The components of the exothermal reactions are calculated. The adiabatic temperature of silica combustion in the lime is found. The heat of the chemical reaction is determined.…
In order to realize the nondestructive testing for hot forming high strength steel parts, a hardness testing device based on Magnetic Barkhausen Noise (MBN) was developed. By measuring MBN of standardized blocks of Rockwell hardness and extracting feature values of the noise, a fitted curve between hardness and MBN pe…
C/C composites are being used as high-temperature structural material due to the superior characteristics of low density, high specific strength, high thermal conductivity, low thermal expansion coefficient and excellent anti-ablation. The state of research into the manufacturing processes of Carbon-Carbon composites…
A novel red-emitting phosphor, CaYAl 3 O 7 : Eu 3+ , Sm 3+ , is synthesized by a combustion method at a low temperature (850°), and the single phase of CaYAl 3 O 7 is confirmed by powder X-ray diffraction measurements. The photoluminescence property results reveal that the red emission intensity of Eu 3+ is strongly d…
The corrosion inhibition efficiency of carbon steel pipelines in 1M HCl by the synthesized hexatriethyleneamine derivatives potensiodynamic polarization 30 oC. The results showed that all synthesized inhibitors were good inhibitors and their inhibition efficiencies were significantly increased with increasing concentr…
In this paper, we describe the development of small signal model of a CNTFET. The development consist of high frequency response of CNTFET. The CNTFET generates higher output rather than the conventional Si MOSFET. An SPICE model for enhancement mode Carbon nanotube transistor has been developed. The performance analy…
Nanostructured Aluminium (Al) doped zinc oxide (ZnO) has been prepared using sol-gel spin-coating method. The annealing temperature was varied and the effect on the surface characteristic of ZnO thin film was studied. The surface topography and morphology of the thin films were characterised using X-ray Diffractometer…
Nanotechnology has promising applications in biomedicine, such as in drug delivery, diagnosis, and tissue engineering. The pharmacokinetics of nanomaterials significantly affects their biological behavior in vivo, affecting their biomedical applications and potential nanotoxicity. In this review, we highlight some rec…
The pretreatment of bamboo fiber by the sulfuric acid was investigated by means of experiments. Effect of the sulfuric acid concentration, reaction temperature, hydrolysis time, and solid-liquid ratio on the yield of Cellulose Nanocrystalline (CNC) was studied by orthogonal experiments and single factor experiments. P…
The inhibitive efficiency of 6-methyl-2-thioxopyrimidinone (MTP), 6-phenyl-2- thioxopyrimidin-4-one (PhTP) and 5-cyano-6-phenyl-2-thioxopyrimidin-4-one (CPhTP) for brass corrosion in 0.1 M H2SO4 at 30°C were investigated by potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) techniques. These…
Two polymorphs of Holmium molybdate, known as β' -phase and γ -phase, were prepared by solid state reaction with different thermal treatments. These polycrystalline samples have been studied for the first time by X-ray thermodiffractometry from room temperature up to 1300 K. We found that the initial β' -phase undergo…
In this research, the thermal properties of 30% filler loading of natural fibers with varying filler loadings of calcium carbonate (CaCO3) were studied. CaCO3was compounded using twin-screw extruder with rice husk/high density polyethylene (HDPE) and kenaf/HDPE composites to produce composites. Compounded composites w…
Integrated resistors are fabricated by using pure boron (PureB) depositions to create a p-type conductive layer on n-type silicon. Sheet resistance values in the 100 kΩ/□ range are reliably and reproducibly realized. The resistors made in this material are linear and display low temperature coefficients of a few hundr…
Compared with an undoped Sb 3 Te film, a Zn 26.28 (Sb 3 Te) 73.72 film exhibits high crystallization temperature (∼202 °C) and activation energy of crystallization (∼3.28 eV), resulting in stability at high temperatures with an extrapolated life-time of 10 years at 130 °C. The crystalline resistance increases and the…
Abstract In this article, the attention is paid to the HVOF (High Velocity Oxygen Fuel) thermal spraying method by which the progressive coatings are applied on basic material C15E (STN 412020). These coatings are based on C-17CO, WC-CO-Cr and Cr3C2-25NiCr. There was made determination of the chemical composition of t…
The preparation of the alpha form of calcium sulphate hemihydrate is technically relatively complicated. The idea is to allow 1.5 molecules of water contained in gypsum to leave through dehydration in liquid form. This can only be achieved under hydrothermal conditions, namely in an autoclave or by increasing the boil…
As a result of CMOS technology approaching its physical limits and of the semiconductor market has started asking for materials that are able to implement new smarter devices, Graphene and composites are emerging as potential replacements for Silicon. Unlike true semiconductors, however, Graphene shows a zero-gap ener…