EASWARI ENGINEERING COLLEGE
(AUTONOMOUS)
BHARATHI SALAI, RAMAPURAM, CHENNAI – 89
DEPARTMENT OF MECHANICAL ENGINEERING
BATCH NO: C11
IV YEAR C SECTION
Date : 20-06-2022
ME8811 PROJECT WORK
END SEMESTER UG PROJECT VIVA VOCE EXAMINATION JUNE 2022
SYNTHESIS AND ANALYSIS OF MECHANICAL PROPERTIES
OF COPPER METAL MATRIX COMPOSITES REINFORCED
WITH GRAPHITE AND SILICON CARBIDE
Presented by
SANDEEP J
YOKESH S
(310618114097)
(310618114129)
Supervisor
Dr. V. ELANGO, M.E, Ph. D
Professor & Vice Principal(academic)
Department of Mechanical Engineering
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ABSTRACT
•
•
•
•
•
Copper based metal matrix composite (CMMC) attracts the
multiple applications due to their good electrical, thermal and
mechanical properties.
The present investigation is based on the fabrication of Coppergraphite with the addition of SiC by sintering followed by
compacting.
Four composites were prepared, One by considering full copper
with no ceramics added and the rest by varying the percentages of
Copper, Graphite, SiC respectively.
The synthesis is followed by characterization of physical,
mechanical and metallurgical properties such as Wear; Pin on disc,
Hardness; Vickers hardness, Compression and Microstructure;
Optical microscope.
The results obtained from the above tests were reviewed and
studied.
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INTRODUCTION
• Copper–graphite metal matrix composites possess the properties
of copper, i.e. excellent thermal and electrical conductivities,
and properties of graphite, i.e. solid lubricating and small
thermal expansion coefficient. Addition of SiC which is high
hardness material and holds a good wear resistance, enhances
the properties of Cu-graphite matrix.
• There were three composites prepared by varying the weight %
of Cu, Graphite, SiC as follows Sample 1: 96:2:2; Sample 2:
94:2:4; Sample 3: 92:2:6. One was prepared as full copper
(Sample X) with no addition of graphite or SiC to compare the
results.
• The techniques used for synthesis are Blending the materials
accorrding to weight%, Compacting using UTM at 5 Tonne
load, Sintering in a Argon Gas furnance at 850°C for three
hours.
• Three samples were prepared for each composition and the
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DEPARTMENT
testing was carried
out. OF MECHANICAL ENGINEERING
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LITERATURE SURVEY
AUTHORS
TITLE
SIGNIFICANCE
Venkatesh R and
Vaddi Seshagiri
Rao
Thermal, corrosion and
wear analysis of copper
based metal matrix
composites reinforced
with alumina and graphite
The corrosion
resistance of the composite with the
maximum alumina reinforcement in nano scale exhibited
better wear resistance.
The presence of graphite certainly
provides a lubricating effect.
C.S. Ramesh,
R. Noor Ahmed,
M.Z. Abdullah
Development and
performance analysis of
novel cast copper–SiO2–
Gr
hybrid composites
The SEM images were taken and
analysed for morphology and
particle sizes.
Microhardness, Ultimate tensile
strength,
Coefficient of friction of hybrid
composites is higher than
that copper.
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AUTHORS
T. Rajmohan,
K. Palanikumar,
S. Arumugam
TITLE
Synthesis and chara
cterization of sintered
hybrid aluminium matrix
composites reinforced
with nano-copper oxide
particles and microsilicon
carbide particles
SIGNIFICANCE
From the studies it has been concluded
that the inclusion of CuO in the Metal
Matrix composites improves the
structure and property of the composite
material.
K. Rajkumar,
S. Aravindan
Tribological behavior of
microwave processed
copper–nanographite
composites.
Copper–NG composites exhibited
higher physical and mechanical properties when compared to the
copper–graphite composites for the
same volume percentage.
A. Fathy,
F. Shehata,
M. Abdelhameed,
M. Elmahdy
Compressive and wear
resistance of nanometric
alumina reinforced
copper matrix
composites
The wear rates of the composites
increased with increasing applied loads
or sliding speed. The wear rate of the
monolithic copper is more than that of
the nanocomposites.
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METHODOLOGY
PROBLEM
STATEMENT
LITERATURE
SURVEY
RAW MATERIAL
PURCHASING
RESULTS AND
REVIEW
TESTING,
SPECIMEN
PREPARATION
MICROSTRUCTR
E
MATERIALS USED
GREEN COMPACT
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SPECIMEN PREPARATION
COMPACTING & SINTERING
• The size of the specimen was estimated as 15mm in Diameter and 25mm in Length.
Considering the density of powdered copper the weight of 100% copper with the above
dimensions is 39.6 grams.
• From the above whole weight the percentage weights of the ceramics to be added were
found and weighed accordingly. The mixtures of materials of each samples were blended
thoroughly.
• The mixtures were then subjected to compacting in the UTM subjecting to a load of 5
Tonne.
• The green compacts were gently collected from the UTM and nummbered according to
their compositions. Three samples of each compositon were prepared, Making a total of
12 samples.
COMPACTING
SINTERING
AFTER SINTERING
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TESTING
WEAR ANALYSIS
Initial Finalw Wearl
Applie Sliding Slidin Slidin
Sam
Time
weight eightg ossing
d
Velocit gDista g
Timei
pleN
inMin
g
Load( y (m nce(m Diain rpm n Sec
o
/Sec
N)
/Sec)
)
mm
X
20
1
500
40
478
500
8.332
35.655
35.624
0.031
1
20
1
500
40
478
500
8.332
17.64
17.574
0.066
2
20
1
500
40
478
500
8.332 10.845 10.3664 0.181
3
20
1
500
40
478
500
8.332 34.072 34.042
HARDNESS
SampleI.D
SampleX
SampleNo:1
SampleNo:2
SampleNo:3
0.03
Hardness Vickers : 0.2 Kgf; Dwell : 10Sec
Reading-1
60.2
137.7
83.2
119
Reading-2
59.7
135.7
93.3
120.2
Reading-3
62.5
108.1
83
114.3
Pin-on-disc
Vickers hardness
tester
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COMPRESSION
SampleI.D
ULTIMATE LOADN
SampleX
SampleNo:1
SampleNo:2
SampleNo:3
11020
9815
6785
13875
MAX.
DISPLACEMENTm
m
13.300
4.700
6.900
5.000
COMPRESSIVE
STRENGTHN/MM2
140.02
124.91
86.35
176.591
COMPRESSION
TESTING MACHINE
MICROSTRUCTURE
SAMPLE X
SAMPLE 2
SAMPLE 1
SAMPLE 3
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CONCLUSION
HARDNESS
•The sample 1 containing equal amounts of graphite and SiC was
observed to have the highest hardness compared to other compositions.
•All compositions were seen to have a good hardness levels compared
to pure copper.
COMPRESSION
•It is seen that the sample 3 that contains the highest percentage of SiC
among other compositions has a greater compression strength.
WEAR TEST
•It is seen that the sample 3 that contains the highest percentage of SiC
among other compositions has a greater wear resistance. Thus SiC
makes the matrix more resistant to wear.
MICROSTRUCTURE
•The microstructure of the 4 samples is observed and studied.
• Copper is visible as bright golden colour, SiC are the dark irregular
shapes visible. Graphite is less visible in shades contrast to SiC.
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REFERENCES
1.Onur Guler, Temel Varol application of the central composite design in
optimization of machining parameters in drilling hybrid metal matrix
composites.
2.T. Rajmohan, K. Palanikumar, S. Arumugam Synthesis and characterization
of sintered hybrid aluminium matrix composites reinforced with nanocopper
oxide particles and microsilicon carbide particles.
3.Baoyin jin, Ding-Bnag Xiong. Enhanced corrosion resistance in metal
matrixcomposites assembled from graphene encapsulated copper nanoflakes
4.Ashraf Bakkar, Sabbah ataya. Corrosion behavior of stainless-steel
fiberreinforced copper metal matrix composite with reference to
electrochemical response of its constituents.
5.C.Ayyapadas, A. Muthuchamy. An investigation on the effect of sintering
mode on various properties of copper-graphene metal matrix composites.
6.T. Kock, A. Brendel. Interface reactions between silicon carbide and inter
layers in silicon carbide–copper metal–matrix composites.
7.Venkatesh R and Vaddi Seshagiri Rao Thermal corrosion and wear analysis
of copper based metal matrix reinforced with alumina and graphite.
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DEPARTMENT OF MECHANICAL ENGINEERING
THANK YOU
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