Materials Literature
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The present article considers an experimental study of tribo-corrosion behavior of electroless Ni-P coatings in alkaline environment sliding against alumina. The study of wear and friction behaviour is carried out using different load and sliding speed with the help of a pin-on-disk tribometer. The wear rate increases…
To apply a transformation-induced plasticity (TRIP)-aided steel consisting of bainitic ferrite structure matrix and metastable retained austenite of 10 vol% (TBF steel) to some precision gears, the effects of fine particle peening on the Vickers hardness and residual stress in a surface layer of the TBF steel were inv…
numerous advantages include improved efficacy ,reduced toxicity and improved patients compliance and convinence.Many advanced drug delivery systems are being introduced for the intrapocket delivery of drugs at the diseased site.Non-degradable and degradable systems have been developed for the delivery of antimicrobial…
In this work, the influence of Red Mud in the pyrolysis of general purpose polystyrene (GPPS) has been studied. The catalytic pyrolysis experiments were carried out using an unstirred semi-batch stainless steel 6.28 liter reactor under nitrogen atmosphere (air free) with Red Mud as a catalyst. The reaction effluents (…
Electrolytic copper contains, on average, 10 ppm silver as impurity, which leads to a loss of silver as a cashcow product for copper smelters.Most of silver included in blister copper anodes passes into anode slime when electrolyzed, keeping the elemental state. However, once a part of elemental silver dissolves from…
We investigate the electronic structures and optical dielectric functions of the high temperature phase of Sr 2 CrOsO 6 with cubic structure by using Tran and Blaha's modified Becke and Johnson exchange potential. In the absence of spin-orbit coupling, the total spin moment is 0μ B . When spin-orbit coupling is includ…
Topological insulators are bulk insulators that possess robust chiral conducting states along their interfaces with normal insulators. A tremendous research effort has recently been devoted to topological insulator-based heterostructures, in which conventional proximity effects give rise to a series of exotic physical…
Today’s world has an increasing interest in composites containing low density and low cost reinforcements. However, these materials endure from poor distribution of the reinforcement in matrix and increase in porosity level. Fly ash is one of the low density reinforcement available in abundant and going as waste from…
A dual-band infrared optical system working in both mid-wave infrared (MWIR) (3~5 m) and long-wave infrared (LWIR) (8~14 m) has been designed with the double-layer Kinoform diffractive optical elements (DOEs). The system is comprised of four lenses, two ZnS lenses and two ZnSe lenses, and its focal length is 100 mm wi…
Abstract — Particulate reinforced graded material composites are one of the potential and advanced classes of engineering materials, which contain reinforcement particles whose volume fraction varies continuously thereby bearing a non-uniform microstructure and the composition in a specific direction leading to variat…
In this study, silver nanoparticles (AgNPs) have been synthesized in aqueous medium by a simple, efficient and economic microwave assisted synthetic route using hexamine as the reducing agent and the biopolymer pectin as stabilizer. The synthesized AgNPs were characterized by UV-vis. spectroscopy, Energy dispersive X-…
3 Abstract: Many toxic industrial dyes are eventually discharged into the environment, necessitating new methods for filtration. Natural zeolite (NZ) is a crystalline hydrated aluminosilicate with a porous framework structure occupied by water, alkali and alkaline earth cations. In this study, the sorption of dye wast…
Polymer & polymer composite gears find increasing application because of the low material manufacturing cost, light weight & quiet operation compared with metal gears. Generally thermoplastic polymers like acetal polymer & nylon polymer are used for gear applications. But acetal and nylon gears have low load carrying…
This work describes the occurrence and blooming of some Cyanobacteria in an artificial, oligosaline, alkaline, microaccumulation in Serbia, which was formed on salines in 1963-64, and rehabilitated in 2009-10. The appearance and specific blooming of species common for tropical regions in Aleksandrovac Lake (N 42o29’22…
Hydrogenated amorphous silicon (a-Si:H) thin films were deposited at low temperature by electron cyclotron resonance chemical vapor deposition (ECRCVD). A furnace annealing (FA) treatment was applied to the as-grown thin films to initiate solid-phase crystallization (SPC) in nitrogen atmosphere and oxygen atmosphere.…
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Flexible heat-resistant neutron and gamma-ray shielding resins have been successfully developed through the use of a polymer resin. The production process involves a new mixing technique of the resin and materials for neutron absorber/gamma-ray attenuation using a new cold-setting method. The process allows for easy o…
Full factorial design methodology was applied for the first time to the synthesis and optimization of palladium–silver nanobars using the polyol process as reducer.
Even though the phenomenon of abnormal grain coarsening (AGC) or “exploded grains” has been known to occur in Alloy 718 industrial forgings there is still no satisfactory explanation for it. For this reason, detailed microstructure analysis has been carried out in normal and abnormal regions. Electron Backscatter Diff…
Five fulleropyrrolidines and methanofullerenes, bearing one or two terthiophene moieties, have been prepared in a convenient way and well characterized. These novel fullerene derivatives are characterized by good solubility and by better harvesting of the solar radiation with respect to traditional PCBM. In addition,…