Optimization of Adsorption Parameters for Lead (II) Removal from Wastewater using Box-Behnken Design
Optimization of Al 6063 Button Head Rivet FEM Analysis Subjected to CRYO ECAP and RT ECAP
Effect of (SiC+Gr) Addition on the Corrosion Behavior of Powder Metallurgy Copper MMC
Assessment of Reuse Potential of Low-Grade Iron Ore Fines through Beneficiation Routes
Characterization of Copper MMC Reinforced with SiC and Graphite in Equal Proportion Made by the Powder Metallurgy Route
Evaluation and Comparison of Turning Process Performance during Machining of D2 Steel Material under Two Sustainable Machining Techniques
An Investigation on Recent Trends in Metamaterial Types and its Applications
A Review on Plasma Ion Nitriding (PIN) Process
A Review on Friction and Wear Behaviors of Brake’s Friction Materials
Comparative Parabolic Rate Constant and Coating Properties of Nickel, Cobalt, Iron and Metal Oxide Based Coating: A Review
Electro-Chemical Discharge Machining- A review and Case study
Comparison Of Composite Proton Conducting Polymer Gel Electrolytes Containing Weak Aromatic Acids
Enhancement in Electrical Properties of PEO Based Nano-Composite Gel Electrolytes
Electrical Properties of Nanocomposite Polymer Gels based on PMMA-DMA/DMC-LiCLO2 -SiO2
Effect of Donor Number of Plasticizers on Conductivity of Polymer Electrolytes Containing NH4F
PMMA Based Polymer Gel Electrolyte Containing LiCF3SO3
Graphene is one of the several forms of carbon, also known as its “allotropes”. It consists of a single-atom–thick sheet of carbon atoms with remarkable and exciting properties. It is super-strong and stiff, amazingly thin, almost completely transparent, extremely light, and an amazing conductor of electricity and heat. It also has extremely unusual electronic properties. These qualities make Graphene, a superb alternative for the use as a transparent conductor, now found in everything from computer displays and flat panel TVs to ATM touch screens and solar cells. It can be used to make excellent transistors in which, the electrons travel ballistically over submicron distances. Moreover, gas sensors could be created which are sensitive to a single atom or molecule with the help of Graphene. In condensed matter physics, electronic properties of materials are described by the Schrodinger equation, but Graphene is an exception. Its charge carriers mimic relativistic particles and are described starting with the Dirac equation, rather than the Schrodinger equation. So it can be used to test the predictions of quantum electrodynamics. This is a new area of research, since it hasn't been easy to find a material that displays Dirac particles. The list of applications of Graphene is countless. Thus, Graphene is a rock star material that relies on one of the most abundant materials on Earth, Carbon. It will drastically change the feasibility and efficiency of many future technologies, and in turn these future technologies will change our lives. This paper presents a review on the properties and applications of Graphene.
An investigation into the applications of composite materials focusing on how they have either replaced traditional materials or allowed innovations to be realised from a performance perspective. Through use of a survey and interview, the author assessed consumer and expert opinion that composites have moved from being a highly performing technical material, reserved for the most extreme applications, to an aesthetic material appreciated for its cosmetic values. The research also looks into where the future may lie with the development of new processes and materials.
Phosphate glasses having composition 50P2O5–30MgO–20Na2O and 50P2O5–30MgO–15Na2O-5TMO (with TMO(Transition Metal Oxides) as CuO, Fe2O3 and TiO2 ) were prepared using conventional melt quench technique and were characterized for their optical and structural properties. The absence of any sharp peak in the XRD spectra confirmed the amorphous behaviour of prepared glasses. Density of prepared glasses was found in the range of 2.51-2.62 g/cm3 . The FTIR (Fourier Transform Infrared Spectroscopy) spectra of the glasses only showed a variation in the intensity of peaks with doping of different transition elements. The band gap energy and refractive index were calculated from the UVVisible optical absorption spectra in the wavelength range of 200-900 nm. It was found that, the band gap energy was maximum for host glass (3.37 eV) and minimum for CuO doped glass samples (3.21 eV). SEM (Scanning Electron Microscope) morphology also showed the lack of any long range periodicity in the prepared glass samples.
Polymer electrolytes based on ammonium fluoride (NH4F) and poly (vinylidene fluoride-co-hexafluoropropylene) (PVdF- HFP) have been prepared by solution casting technique using Tetrahydrofuran (THF) as a solvent and characterized by complex impedance spectroscopy. Maximum conductivity of 2.17x10-7 S/cm at room temperature has been obtained for polymer electrolytes PVdF-HFP+10wt%NH4F. The effect of different plasticizers Propylene Carbonate (PC), Dimethylformamide (DMF) and Dimethylacetamide (DMA) on conductivity behavior has been studied. It has been found that, the conductivity of polymer electrolytes increases by three orders of magnitude from 10-7 to 10-4 S/cm with the addition of plasticizers. Maximum room temperature conductivity of 8.8x10-6 S/cm, 7.8x10-5 S/cm and 1.1x10-4 S/cm has been observed for plasticized polymer electrolytes containing PVdF-HFP+30 wt% NH4F and 95 wt% PC, DMF, DMA respectively, which can be explained on the basis of donor numbers of plasticizers used. The addition of plasticizer to polymer electrolytes has been observed to decrease in glass transition temperature (Tg ). The variation of conductivity with temperature suggests that, these polymer electrolytes are thermally stable and small change in conductivity with temperature is suitable for their use in practical applications like solid state batteries, fuel cells, electro chromic devices, super capacitors, etc.
The present paper describes the role of Mn on the properties of a Cu-Al-Ni-Zn shape memory alloy. The effect of addition of different amounts of Mn has been studied on a Cu-12Al-4Ni-10Zn alloy, known to exhibit shape memory properties. The transformation temperatures, phase precipitation and thermal properties have been determined. It has been found that the quantity of Mn has a significant effect on the formation, morphology, and structure of the obtained martensite. Therefore, the properties of these alloys are varied in accordance of these effects. The efficacy of adding Mn and its quantity has been described in this study and a correlation is attempted to relate it to the thermal properties.
Burnishing is defined as a low-cost chipless finishing process, which can be effectively used to improve the surface roughness and surface micro hardness. The present paper presents a review on “Process Parameters and uses of the Roller Burnishing Process”. A roller tool is used to perform the roller burnishing process using different process parameters, which can be optimized to improve the surface roughness and hardness, resulting in the improvement of certain physical and mechanical properties, such as corrosion, wear, fatigue resistance, etc. Roller burnishing is an economical process as it doesn't require skilled operators. The present paper is a review of the different techniques, which has been used recently.