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Nanomat 2019
Nano Research & Applications
ISSN: 2471-9838
Page 26
January 28-29, 2019
Barcelona, Spain
18
th
Edition of International Conference on
Emerging Trends in
Materials Science and
Nanotechnology
M
etal matrix composite layers are widely used as advanced
functional materials for different applications. The
electrochemical deposition technique or anodization have been
increasingly being established as efficient preparation route for
obtaining nano and micro structured composites, cermets or
hybrid coatings with specific properties to be used in industrial
or biomedical applications. The process of electro-co-deposition
essentially consist inclusion of solid particles suspended in an
electrolytic bath into the electro crystallizing metal which is in
fact the metal matrix. The particles co-deposited with a metallic
matrix are generally considered insoluble. The development
of modern technology requires metallic materials with better
surface properties and better corrosion and wear resistance.
Nanocomposites made up of highly fine particles (nanometer
size) of pure metals, ceramics and polymers in a metallic matrix
have been the object of investigation for some decades in
science, industry and biomedical applications. Apart from the
intrinsic advantages of in situ electrochemical synthesis, the
route provides the opportunity of producing the coating with
desired thickness and composition. Co/nano-CeO2 composite
coatings were developed by electro deposition method from a
cobalt plating solution containing dispersed CeO2 nanoparticles
(25 nanometers size). The content of co-deposited CeO2 into
nanocomposite coatings was controlled by the addition of
different CeO2 particle concentrations into the electroplating
solution. The corrosion and tribocorrosion performances of
Co/nano-CeO2 nanocomposite coatings and pure Co coating
were comparatively investigated in an electrochemical cell
and unidirectional reciprocating of tribometer in lubricating
conditions using simulated biological solution (Hank). During the
tribocorrosion test, the normal force, tangential force, coefficient
of friction, number of cycles as well as the electrochemical
parameters (potential), were continuously monitored. Schematic
representation of tribocorrosion tests are shown in fig. 1. The
corrosion and wear performances of Co/nano-CeO2 bio-coatings
are closely related with CeO2 content. The nanocomposite
coating with all CeO2 content shows increased wear resistance
when compared with pure Co coating.
Recent Publications
1. Lidia Benea (2012) Electrochemical impedance
spectroscopy and corrosion behavior of Co/CeO2
nanocomposite coatings in simulating body fluid
solution. Metallurgical and Materials Transactions A.
44A:1114-1122.
2. Lidia Benea, Pierre Ponthiaux and Francois Wenger
(2011) Co-ZrO2 electrodeposited composite coatings
exhibiting improved micro hardness and corrosion
behavior in simulating body fluid solution. Surface and
Coatings Technology 205:5379-5386.
3. V M Dumitrascu, L Benea and N Simionescu (2018)
Evaluation of sealing process on the surface properties
of nanoporousaluminiumoxide layerselectrochemically
growth on 1050 aluminum alloy surface. Mater. Sci. Eng.
DOI: 10.1088/1757-899X/374/1/012013.
4. Lidia Benea, LaurentiuMardare andNicoleta Simionescu
(2018) Anticorrosion performances of modified
polymeric coatings on E32 naval steel in sea water.
Progress in Organic Coatings 123:120-127.
Biography
Nicoleta Lucica Simionescu is a second year PhD student in Materials Sci-
ence and Engineering at Dunarea de Jos, University of Galati, Romania.
Her field of study is the degradation of metallic biomaterials by corrosion
processes in bio-fluid environments. She received the Diploma of Second
Award at the Conference of Doctoral Schools from Dunarea De Jos Univer-
sity of Galati, 2018.
nicoleta.simionescu@ugal.roCorrosion and wear performances of Co/nano-
CeO2 bio-coatings in biological solution
Nicoleta Lucica Simionescu
and
Lidia Benea
CC-ITES — Dunarea de Jos University of Galati, Romania
Nicoleta Lucica Simionescu et al., Nano Res Appl 2019, Volume 5
DOI: 10.21767/2471-9838-C1-030