A REVIEW ON GRAPHENE REINFORCED ALUMINIUM MATRIX COMPOSITE PREPARED BY

SPARK PLASMA SINTERING

NIRMAL CHANDRA DAS, ANUBHAV MAHAPATRA, SUBHADRA SAHOO AND DINESH KUMAR MISHRA

Presented By:

DEPARTMENT OF METALLURGY AND MATERIAL ENGINEERINGVEER SURENDRA SAI UNIVERSITY OF TECHNOLOGY, BURLA

CONTENT

INTRODUCTION SCOPE OF PRESENT STUDY LITERATURE REVIEW COMPOSITE SPARK PLASMA SINTERING ADVANTAGES DISADVANTAGES APPLICATION FUTURE PROSPECTIVE REFERENCE

INTRODUCTIONALUMINIUM 7055 Alloy:

Aluminium 7055 series alloys are heat treatable wrought alloys, which are widely used in the aviation industry.

Aluminium 7055 is alloyed with the elements like Zn, Mg, Cu and Zr. Its chemical composition mentioned below

Physical properties Density 2.86g/cm3, Melting point: approx 580ºC Mechanical Properties

Young’s modulus - (68-72)Gpa, Tensile Strength – (70-360)Mpa, Hardness-Vickers – (30-100)Hv, Yield Strength – (30-286) Mpa Compressive Strength – (30-286)Mpa, Elongation – (2-41)%

Elements

Al Zn Mg Cu

wt% 88.9-88.5

7.6-8.4 1.8-2.3 2-2.6

GRAPHENE Graphene is an allotrope of carbon in the form of a two-

dimensional, atomic-scale, honey-comb lattice in which one atom forms each vertex.

It is about 100 times stronger than the strongest steel. It conducts heat and electricity efficiently and is nearly transparent.

Graphene also shows a large and nonlinear diamagnetism, even greater than graphite. 

SP2 Hybridized Hexagonal Structure

SCOPE OF PRESENT STUDY

The scope of our study is To Study the effect of Graphene reinforcement into the Aluminium matrix phase.

To study the effectiveness of various processes over Aluminium 7055-Graphane composite

To study the mechanical, electrical, chemical properties of the composite.

To study SPS process in fabrication of Al 7055-Graphene composite.

LITRETURE REVIEW

PROCESS INVESTIGAT

OR REFERENCE

Fabricated a 0.1wt% aluminum–graphene composite using ball milling, hot isostatic pressing.

Bartolucci et al.

International journal of mineral and metallurgy

Adopted an improved fabrication technique, i.e., cryomilling (at 181°C), followed by hot isostatic sintering and extrusion at a relatively lower temperature (300°C).

Li et al. -do-

Studied the effects of milling time and hot isostatic sintering time on the mechanical properties of aluminum-graphene composites.

Pérez–Bustamante et al.

-do-

Prepared the graphene-reinforced copper matrix composites using vacuum uniaxial hot pressing ball milled mixtures and studied the effects of graphene size on the mechanical properties of the composites.

Dutkiewicz et al. -do-

Developed a friction stir processing method to fabricate metal-graphene composites and achieved the improved thermal conductivity and better tensile strength.

Jeon et al.

-do-

COMPOSITE A composite material is a material which made from two or

more constituent materials with significantly different  physical or chemical properties that, when they combined, produce a material with characteristics different from the individual components, in general, one is matrix and other is reinforcement.

Design goal: obtain a more desirable combination of properties (principle of combined action) Ex: low density and high strength

Rule of mixture: In materials science, a general rule of mixtures is a weighted mean used to predict various properties of a composite material made up of continuous and unidirectional fibers. Transverse properties refer to properties of the composite in the

direction normal to, as opposed to parallel to the fibers.

LONGITUDINAL DIRECTIONIn this case,===+(1-) , = =+=+(1-)

=Elastic modulus of reinforcement=Elastic modulus of composite=Elastic modulus of matrix

TRANSVERSE DIRECTION 

SPARK PLASMA SINTERING

In SPS powder is directly fade into the graphite dice and the die is enclosed with suitable punches . The entire assembly is put into the SPS chamber , and the chamber is now closed and atmosphere (vaccum) in which sintering is to carried out is applied into the chamber.

The sample is heated by joule/heating and the sparking among the particle of sintered material leads to faster heat and mass transfer.

SPS is used to prepare graphene-reinforced 7055 aluminum alloy composites.

Aluminum 7055 alloy powder with a diameter of 50 μm was used as the metal matrix material.

A clean and strong interface by metallurgical bonding on an atomic scale is formed between the graphene plates, and the metal matrix due to the surface cleaning and electrical activation effects of SPS, which is beneficial to improve the mechanical properties of composites

FLOW CHAT ALUMINIUM 7055 + GRAPHENE

MIXTURE ISOTACTIC PRESSING

SINTERING

COMPOSITE

MIXTURE

ADVANTAGES OF SPARK PLASMA SINTERING

Spark plasma sintering (SPS) can provide a time-saving, low-temperature, low-pressure and high-quality method for the fabrication of composites.

Detrimental aluminum carbide (Al4C3) is not formed during SPS processing because of the low sintering temperature and non-milling blending process.

Uniform and Fast.High energy efficiency.

DISADAVANTAGES OF SPARK PLASMA SINTERING

Only simple symmetrical shapes may be prepared.

Expensive pulsed D.C generator is required

APPLICATION

CAPACITOR

INTEGRATED CIRCUIT

SOLAR CELL

LIQUID CRYSTAL DISPLAY

FUTURE PROSPECTIVE

S

SATELLITES AUTOMOBILES

AEROSPACE TRANSPARENT TABLET

REFERENCE

1. Wen-ming Tian, Song-mei Li, Bo Wang, Xin Chen, Jian-hua Liu, and Mei Yu(2015) “Graphene-reinforced aluminium matrix composites prepared by spark plasma

2. Sintering”,international Journal of Minerals, Metallurgy and Materials Volume 23, Number 6, June 2016, Page 723-729

3. C. Jeon, Y. Jeong, J. Seo, H.N. Tien, S. Hong, Y. Yum, S. Hur, and K. Lee, Material properties of graphene/aluminum metal matrix composites fabricated by friction stir processing, Int. J. Precis. Eng. Manuf., 15(2014), No. 6, p. 1235.

4. B. Lee, M.Y. Koo, S.H. Jin, K.T. Kim, and S.H. Hong, Simultaneous strengthening and toughening of reduced graphene oxide/alumina composites fabricated by molecular-level mixing process, Carbon, 78(2014), p. 212.

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