Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

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VIT University

MMC has been used in engineering application in broad way because of their mechanical and physical properties. They are broadly used in the field of automobile and aerospace because of their high strength to weight ratio, lighter weight, lower cost, and good behaviour. In present study the mechanical and wear behaviour of aluminium metal matrix composite and SiC has been discussed. Brake Pad is manufactured by route of powder metallurgy which is widely preferred because of its low cost, high volume production, ease of operation, sustainability and attractive manufacturing process. Brake pads are developed with light alloy Aluminium 2014 reinforced with SiC to augment the strength and wear resistance and explore the advantage of low density of the matrix. Â© 2014 The Authors.

VIT Unitversity

Department of Manufacturing Engineering

School of Mechanical Engineering

Vellore Campus

Mechanical

Chennai Campus

Fulltext

Procedia Engineering

Evaluation of Properties for Al-SiC Reinforced Metal Matrix Composite for Brake Pads

An attempt is being made to develop nano particles reinforced metal matrix composites using powder metallurgy process. Uniform distribution of particles was achieved by sonication of reinforcement for distribution of Carbon nano tube (CNT). FESEM has shown the distribution with particle size conforming nano size and uniformity of distribution. Mechanical properties like radial compressive strength, microhardness, thermal and electrical conductivity were evaluated. Radial compression testing was carried out to see the influence of CNT on aluminium alloy and also evaluate the bonding phenomena. Electrical conductivity of these composites were also evaluated and presented. The findings results in guiding to select the reinforcement to achieve the desired properties.

International Journal of ChemTech Research

Influence of nano particles reinforcement on the thermal and electrical properties of aluminium alloy matrix composites

The naturally occurring bio hazardous material Egg Shell is added to the aluminum 6061 grade alloy powder and its effects on the micro structures and the properties of the composite Al 6061 with egg shell were studied. The samples of 5, 10, and 15 % by weight of the egg shell in the Al 6061 alloy powder were prepared and studied in by an optical microscope. The properties both physical and mechanical including density and Vicker's micro hardness are estimated. The results showed an improvement of hardness of about 14% with the improvement in the percentage of reinforcement. The SEM images of the specimens showed a good bonding between the egg shell and the Al 6061 alloy powder. The density of the composite reduced significantly with an increase in the composition of the egg shell in the composite. © 2014 Published by Elsevier Ltd.

The Micro Structural and Mechanical Property Study of Effects of EGG SHELL Particles on the Aluminum 6061

An attempt has been made to improve the interfacial strength of AlSiC composites which are widely used in defense and automotive sectors. Enhancement of interfacial strength is studied by radial crushing of composites reinforced with electroless nickel coated SiC particled and manufactured by powder metallurgy process. It was visualized that ultimate breaking load for electroless Nickel coated SiC reinforcement has increased by 40 % with respect to uncoated reinforcement. XRD data confirmed the existence of Nickel in Aluminium matrix. SEM studies revealed the incorporation of Nickel with Aluminium and Silicon carbide. Because of improved interfacial strength and microhardness values the so obtained composites can be used for heavy machineries as an alternate to monolithic alloys.

Department of Chemistry

School of Advanced Sciences

Journal of Materials and Environmental Science

The influence of electroless nickel coated SiC on the interface strength and microhardness of aluminium composites

An attempt has been made to improve interphase strength of reinforcement and matrix by autocatalytic deposition route. The auto catalytic copper has improved the interphase strength which has been validated by radial crushing test as per ASTM 939-09. The ultimate failure load and the compressive strength of the composite has enhanced to an extent of 66.74% in comparison with uncoated reinforcement. The existence of copper on SiC reinforcement has been explained by SEM-EDAX analysis.

Enhancing the interphase strength of aluminium composite by autocatalytic process

The novel inhibitive effect of N-(4-aminosulphaacetamide) on the corrosion of Al-SiC composites in 1N HCl has been investigated using weight loss, gasometric measurements, potentiodynamic polarization and impedance studies. This study clearly indicated that the compound acted as cathodic inhibitor. Diffused reflectance spectra confirmed the formation of adsorbed film of inhibitor on metal. The adsorption of the compound on composite surface obeyed Temkin's adsorption isotherm. The quantum chemical analysis substantiates the inhibition efficiency of the compound determined by electrochemical methods. © 2013 University of Manchester and the authors.

World University root node

Journal of Corrosion Science and Engineering

A novel inhibition of corrosion of Al-SiC composites in acidic medium

The retardation of dissolution of Al-SiC composites in 1N HCl could be studied by using sulfaguanidine drug (SGD) as a green corrosion inhibitor. The performance of the compound has been explored using mass loss studies, gasometric measurements, potentiodynamic polarization and impedance analysis. These studies evidently pointed out that the compound performed as cathodic inhibitor in 1N HCl. The adsorption of the drug molecule on Al-SiC surface followed Temkin's adsorption isotherm. The quantum mechanical calculations validated the inhibition efficiency of the compound studied by electrochemical methods. © 2013 University of Manchester and the authors.

The retardation of dissolution of Al-SiC composites in acidic medium-A green approach

Corrosion behaviour of mild steel in 1M Sulphuric acid with Cloxacillin as corrosion inhibitor has been studied by using weight loss, Potentiodynamic polarization, Electrochemical impedance spectroscopy, Hydrogen permeation and diffuse reflectance spectroscopic studies. All these techniques reveal that inhibition efficiency increases with the increase in the concentration of inhibitor. Scanning electron microscopy (SEM) was carried out to characterize the surface morphology of the metal. Polarization studies indicated that inhibitor behaved as cathodic inhibitor. Diffuse reflectance spectroscopy confirmed the adsorption of inhibitor on the mild steel surface obeying Langmuir adsorption isotherm. A chemoffice 3D simulation technique was used to run the quantum mechanical analysis and established correlations between different types of descriptors and measured corrosion inhibition efficiency for inhibitor. The quantum chemical analysis substantiates the inhibition efficiencies of the compound determined by electrochemical methods. © 2013 University of Manchester and the authors.

Experimental and theoretical studies of Cloxacillin on the corrosion of mild steel in 1M H2SO4

A novel composite coating containing WS2 in Ni-P matrix was obtained by electroless deposition route. The incorporation of tungsten sulfide particles enhanced the hardness and corrosion resistance of the Ni-P coatings. It was established that the electroless Ni-P-WS2 coatings were able to sustain the low coefficients of friction under severe sliding condition in comparison with the Ni-P coatings. It is evident that the Ni-P-WS2 coatings have the option of being used as solid lubricants to the sliding parts of machineries in aerospace industries. The incorporation of WS2 and the existence of Ni3P in the matrix have been ascertained by XRD, SEM and AFM. © 2013 The Authors. Published by Elsevier Ltd.