i-manager's Journal on Material Science (JMS)


Volume 8 Issue 3 October - December 2020

Research Paper

Fabrication of Lanthanum Strontium Iron Oxide (LSFO) Films From (La,Sr,Fe)-EDTA Solutions with Atmospheric Sintering for Metal-Air Secondary Batteries

Keiji Komatsu* , Mirai Yamamura **, Wang Yu ***, Keita Abe ****, Tsuyoshi Kikuta *****, Atsushi Nakamura ******, Hidetoshi Saitoh *******
*-*****,******* Department of Materials Science and Technology, Nagaoka University of Technology, Kamitomioka, Nagaoka, Niigata, Japan.
****** Nagaoka University of Technology, Kamitomioka, Nagaoka, Niigata, Japan & Chubu Chelest, 3-3-3 Hinagahigashi, Yokkaichi, Mie, Japan.
Komatsu, K., Yamamura, M., Yu, W., Abe, K., Kikuta, T., Nakamura, A., and Saitoh, H. (2020). Fabrication of Lanthanum Strontium Iron Oxide (LSFO) Films From (La,Sr,Fe)-EDTA Solutions with Atmospheric Sintering for Metal-Air Secondary Batteries. i-manager's Journal on Material Science, 8(3), 1-10. https://doi.org/10.26634/jms.8.3.17472

Abstract

Perovskite-type lanthanum strontium iron oxide (LSFO) films were synthesized on Si substrate with metalethylenediaminetetraacetic (metal-EDTA) complex. The starting material of the metal composition has been La:Sr:Fe=1:3:3, followed by atmospheric sintering at temperatures ranging from 550 °C to 950 °C. The process produced LaSr3Fe3O9.9 owing to the design of the metal-EDTA complex, and also crystals with other LSFO structures. LSFO particles were also prepared on carbon paper by using spraying and roasting processes for use as the air electrode in a metal-air secondary battery. The addition of surfactant to the (La,Sr,Fe)-EDTA solution made it possible to prepare uniformly distributed LSFO particles sized approximately 100 nm on carbon paper. The catalytic effects of the different LSFO films on the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) were investigated. Unique solution-based synthesis with compositional accuracy for metal-air secondary battery has been proposed.

Research Paper

Sink Fabrication from Limestone-Clay Reinforced Polyester Composite

Kashim Isah Bolaji* , Shado Adeniyi Samuel **
* Department of Industrial Design, School of Environmental Technology, Federal University of Technology, Akure, Nigeria.
** Department of Glass and Ceramic Technology, The Federal Polytechnic, Ado Ekiti, Nigeria.
Bolaji, K. I., and Samuel, S. A. (2020). Sink Fabrication from Limestone-Clay Reinforced Polyester Composite. i-manager's Journal on Material Science, 8(3), 11-21. https://doi.org/10.26634/jms.8.3.17088

Abstract

Different materials had been used for sink fabrication in recent years. In this study ceramic filled polyester composite material has been developed by adding micro-fine limestone and clay ceramic particulates with particle size of <134 μm to unsaturated polyester resin with a loading weight of 20% limestone and 30% limestone/clay and fixed amount of catalyst (1% weight). The reaction temperature lies within 95.8 – 150 oC. Resin Transfer Molding (RTM) technique has been used to fabricate a prototype sink using wooden and Plaster of Paris (POP) mold with a view to examine surface finish. The prototype sink produced shows durability with smooth surface finish and can be customized to satisfy end user's preference and choice.

Research Paper

Thermal Energy Storage Device using Paraffin Wax as Phase Change Material

Omkar Rajendra Paygude*
Master of Engineering and International Business, SRH Berlin University of Applied Science, Berlin, Germany.
Paygude, O. R. (2020). Thermal Energy Storage Device using Paraffin Wax as Phase Change Material. i-manager's Journal on Material Science, 8(3), 22-27. https://doi.org/10.26634/jms.8.3.17319

Abstract

The world has lot of energy resources, but the major problem is concerned with its storage. This paper demonstrates the thermal energy storage using phase change material (PCM) which is one of the effective methods. In this paper, a 'two-way heat exchanger system' is designed in which thermal energy is stored and hot water can be utilized during daytime as well as night. The result of charging and discharging process of paraffin wax is observed. Basic working behind this system is to store the latent heat of paraffin wax. This heat can then be extracted to raise the temperature of water. The performance of PCM is compared with two different flow rates. This experimental result shows the feasibility of phase changing material as energy storage media.

Research Paper

Analysis of Leaching Rate of Heavy Metals from Fly Ash at Varying Leachant pH & Cumulative Liquid to Solid Ratios

Tobby Michael Agwe * , S. N. Sharma **, Govind Pandey ***
* Department of Civil Engineering, Kabale University, Uganda.
** Department of Civil Engineering, Madan Mohan Malaviya University of Technology, Gorakhpur (U. P.), India.
*** Central Soil and Materials Research Station, Ministry of Water Resources, River Development & Ganga Rejuvenation, New Delhi, India.
Agwe, T. M., Sharma, S. N., and Pandey, G. (2020). Analysis of Leaching Rate of Heavy Metals from Fly Ash at Varying Leachant pH & Cumulative Liquid to Solid Ratios. i-manager's Journal on Material Science, 8(3), 28-35. https://doi.org/10.26634/jms.8.3.17320

Abstract

Fly ash (FA) is a particulate matter consisting of finely divided, non-combustible particles obtained from the flue gases arising from combustion of coal, accounts for over 80% of the total ash produced during coal combustion. In 2018 alone, about 780 million tons of FA has been generated globally, of which voluminous quantity remained unutilized, hence dumped into the environment. This continued disposal of FA into the environment makes the heavy metals contained therein to move out in the leachate generated, polluting the soil, surface and ground water sources among others. In this study, 5 sets of leaching test columns were packed with an equal quantity of air dried fly ash samples and each of them leached with leachant of pH 5.87, 6.08, 6.41, 6.46 and 7.01 and eluate from each column collected at cumulative liquid to solid (L/S) ratios in l/kg of 0.1, 0.2, 0.5, 1.0 and 2.0. Analysis of the eluate for Copper (Cu), Selenium (Se), Zinc (Zn), Cadmium (Cd), Lead (Pb), Nickel (Ni), Chromium (Cr) and Arsenic (As), revealed that the concentrations of Se at Selenium L/S of 0.1 for leachant pH of 5.87, 6.41 and 7.01, exceeded the allowable limits for non-hazardous wastes disposal into the landfills.

Research Paper

Elastic Analysis of Functionally Graded Rotating Annular Disk with Varying Properties using ANSYS

Aviral Kumar Jain * , Santosh Kumar Mishra **
*-** Department of Mechanical Engineering, Bhilai Institute of Technology Durg, Bhilai, Chhattisgarh, India.
Jain, A. K., and Mishra, S. K. (2020). Elastic Analysis of Functionally Graded Rotating Annular Disk with Varying Properties using ANSYS. i-manager's Journal on Material Science, 8(3), 36-46. https://doi.org/10.26634/jms.8.3.17456

Abstract

Functionally graded materials or functionally gradient materials (FGM) are characterized as an anisotropic material whose physical properties varies continuously because the dimensions vary randomly or strategically to realize the specified characteristics. The general properties of the functionally gradient material are different from the properties of any of the individual parent materials which forms it. In this case aluminium and ceramic material FGM is considered, as ceramic materials displays better wear, corrosion and temperature resistance. Material modelling, geometric modelling and finite element modelling are completed for the disc subjected to inertia force because of the rotation of the disk, and thermal load. Then the numerical problem is solved using the finite element software ANSYS 18.1. A functionally graded annular disc is analyzed for different profiles like convex, concave, linearly varying and uniform with different angular velocity, and ceramic material considering exponentially varying material properties.

Research Paper

Determination of Input Set through Multi-Objective Optimization of PMEDM Output Parameters using Modified Topsis

B. S. V. Ramarao*
*Department of Mechanical Engineering, Pragati Engineering College (A), Kakinada, Andhra Pradesh, India.
Ramarao, B. S. V. (2020). Determination of Input Set through Multi-Objective Optimization of PMEDM Output Parameters using Modified Topsis. i-manager's Journal on Material Science, 8(3), 47-54. https://doi.org/10.26634/jms.8.3.17672

Abstract

Input parameters identification and selection along with its range is an important task to proceed with the major experimentation in research work, especially when working with some specific methods in DOE (Design of Experiment). Few parameters have to be considered with fixed values and as variables based on the limitations or ranges of the input parameter values in non-conventional machining process. Selection of the range of values is the immediate task after selecting input parameters. There should be one procedure or evidence for selecting the better range of values in the set along with the help of literature. In this research paper, the selection of range of values of 'Pulse ON Time' is discussed. Out of the four proposed input parameters to be used in the main experimentation, three were assumed as fixed and seventeen experiments were conducted to determine the range for the fourth parameter. For different values of input parameters, MRR and SR were found. Modified TOPSIS has been applied on these observations, and then from the results, better values of Ton were found out to complete set of values which are to be utilized in DOE.