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
River sand is the common form of fine aggregate used in the making of concrete mixture. To meet the high demand of river sand by the builders and construction industry in this fast urbanization age, river beds are mined for sand and it is depleted at a faster pace, which in turn causes substantial negative effect on our environment. So it is highly important to find alternative form of fine aggregates for meeting the large demand without distressing our ecosystem. Copper slag is one among various sustainable materials having a promising future as a substitute for river sand. This article presents a study on identifying the optimum percentage of copper slag to be used as a fine aggregate by partially replacing sand in the making of the concrete. Also, as part of durability aspects study, the impact of higher temperature of 200 °C, 400 °C, and 600 °C for 4 hours exposure time on concrete with optimum percentage of copper slag has been presented and has been compared with normal concrete. The results show that copper slag concrete has better resistance to strength loss and weight loss at a higher temperature of 200 °C, 400 °C in comparison with normal concrete, but at 600 °C copper slag concrete displays similar trends comparable to normal concrete. In the present experimental investigation, M30 concrete grade was used.
The present work investigates the corrosion behaviour of SS 304 and SS 316L used for beverage containers, boat propellers, and bio-implants. Electrochemical Impedance Spectroscopy and Potentiodynamic Polarization Measurement test were performed to determine the corrosion behaviour of substrates at room temperature. X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM) analysis were used to investigate the characterization and morphology of the substrates. The electrochemical study showed that the order of corrosion resistance of 304 SS and 316L in different electrolytes was Ringer solution > Wine > Beer > 3.5% NaCl solution and Ringer solution > Beer > Wine > 3.5% NaCl, respectively. After electrochemical corrosion testing, substrates were examined by XRD and SEM to reveal their crystallite size and pits quantity.
In this research work, 3 wt % of tungsten trioxide (WO3) particulates are used to reinforce the Al5Mg5Zn alloy. For the development of this particulate, reinforced Al metal matrix composite, two step stir casting processing route is used due to its simplicity and cost effectiveness. The Brinell hardness, impact toughness, and sliding wear resistance properties of the casted Al5Mg5Zn alloy and developed Al5Mg5Zn + 3%WO3 composite are investigated according to ASTM standards and their results are compared. The worn surfaces of the test sample are analysed by using optical microscopy to obtain the pattern of the dry sliding wear. The results show that the addition of 3 wt % WO3 particulates improved the hardness and sliding wear resistance of the Al5Mg5Zn alloy and diminished the value of impact toughness.
Metal Matrix Composites (MMCs) are emerging as vital engineering materials due to their specific strength, ductility, toughness etc. As the demand for high specific strength materials is increasing day by day, Aluminium matrix can be strengthened by reinforcing with hard ceramic particles like Silicon Carbide (SiC), Aluminium Oxide (Al2O3) etc. In the present study, aluminium metal matrix composites were made by reinforcing with SiC and Al O particles using stir casting route. The mechanical properties such as hardness, strength, density, electrical conductivity and chemical analysis of the unreinforced Al and Al+15% SiC/ Al+15% Al2O3 / Al+10% SiC+5% Al2O3 (wt%) reinforced composites were examined. The micro structural characterization of the composites was studied with metallurgical microscope. It was observed that the hardness and compressive strength were increased, where as the density and elongation were decreased with the reinforcement in base aluminium composite.
The present work is on the study of Na β-Al 2O3, a ceramic that belongs to a family of oxides exhibiting fast-ionic conductivity. Na β-Al2O3 has the best solid electrolyte properties. This material is appropriate for use in electronic devices. NaAl 7O11, NaAl11O17, and Na2MgAl10O17 are well known three compounds in the system of Sodium beta-alumina ceramics. NaAl7O11, Na2 MgAl10O17, and NaAl11O17 compounds were prepare by combustion method in a single step. Attempts to synthesize NaAl11O17 by combustion synthesis failed. Metal nitrates as oxidizer and urea as a fuel are the starting material for preparation of these compounds. The method used is combustion synthesis, which is feasible, low cost, and a time saving method. Among the three compounds used in this study, NaAl7 O11 and Na2MgAl10O17 show better results. NaAl11O17 doped with rare earth ions like Cerium and Europium could be achieved.
Ceramic-metal composites are made of ceramics and metals, termed as cermets. Unlike conventional metal matrix composites or ceramic matrix composites, which come bearing technical limitations in their field of applications, cermets have improved mechanical, tribological, and thermal properties. In the present work, an attempt is being made to compare the ceramic-metal composites with the traditional ceramic matrix and metal matrix composites with respect to their mechanical performances. This paper also explores the development, behaviour and use of cermets for extreme engineering applications. Further, efforts have been made to review the works done on cermets with respect to their manufacturing process and the properties affected by different process. Scope for further investigation on cermets with respect to optimization of ceramic-metal composite is carried out by identifying gaps in the past research.
Friction materials present in an automobile breaking system is mainly responsible for controlling the automobile during running conditions. In recent years, with innovations in automobile sector, advancements in newly designed automobiles with varying design and high speeds are being launched in the markets, demanding prime challenges for the braking system designers to control the speed of the vehicle. After the phasing out asbestos as a brake friction material by many countries in the world, due to its carcinogenic property, automobile brake friction industry and researchers are looking for suitable alternatives to replace asbestos as friction material. This paper reviews several researches in this field and enables researchers to identify proper friction material responsible for stabilization of coefficient of friction and wear rate. This paper also gives an overview of the role of fiber, binder, and filler materials in improving the coefficient of friction. Finally, the effect of operating parameters, such as speed, temperature, pressure, and velocity on friction materials is studied.