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.com
Volume 6
Research & Reviews: Journal of Material Sciences
ISSN: 2321-6212
Ceramics 2018
May 14-15, 2018
May 14-15, 2018 | Rome, Italy
4
th
International Conference and Expo on
Ceramics and Composite Materials
Microstructure and electrical properties of b(Zr
0.5
Ti
0.5
)O
3
-Pb(Zn
1/3
Nb
2/3
)O
3
-Pb(Ni
1/3
Nb
2/3
)O
3
+xS
3
Ti
2
O
7
ceramics
Leilei Li, Feng Gao, Jie Xu, Xiaomeng Gao
and
Junting Liu
Northwestern Polytechnical University, P.R. China
P
b(Zr
0.5
Ti
0.5
)O
3
-Pb(Zn
1/3
Nb
2/3
)O
3
-Pb(Ni
1/3
Nb
2/3
)O
3
(PZNNT) ceramicswithdifferent content of plate-like Sr
3
Ti
2
O
7
compound
was prepared through conventional solid state methods. The effect of Sr
3
Ti
2
O
7
amount and the sintering temperature on
the microstructures and piezoelectric properties of PZNNT ceramics were investigated. Analyses of phase and microstructure
indicated that both of grain size and the content of tetragonal phase at the MPB decreased significantly by increasing Sr
3
Ti
2
O
7
while dilute the Pb-O covalency with more lower ferroelectric properties. When the Sr
3
Ti
2
O
7
was 5wt%, the specimen had
relative optimum properties due to the close content of tetragonal and rhombohedral phase at the MPB. Additionally, with
further increase of sintering temperature for mature grain, the content of tetragonal phase and electric properties of PZNNT-
5wt% Sr
3
Ti
2
O
7
ceramics gradually increased. The optimal piezoelectric and dielectric properties of PZNNT-5wt% Sr
3
Ti
2
O
7
ceramics sintered at 1040°C for 2h was
d33=
572
pC/N, d33×g33=
17630×10
-15
m
2
/N and
k
p
=0.57 due to the content of tetragonal
and rhombohedral phase coexisted and relative larger grain size ceramics, which is potential candidate materials used for the
application in energy harvesting.
lyreve@mail.nwpu.edu.cnRes. Rev. J Mat. Sci. 2018, Volume 6
DOI: 10.4172/2321-6212-C1-015