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The effect of composition on microstructure and properties of PNW–PMS–PZT ceramics for high-power piezoelectric transformer
(Pb 0.95Sr 0.05)[(Mn 1/3Sb 2/3) x (Ni 1/2W 1/2) y (Zr 1/2Ti 1/2) z ]O 3 piezoelectric ceramics (abbreviated as PNW–PMS–PZT) with 1 mol% excess PbO, 0.25 wt% CeO 2 and 0.2 wt% MnO 2were synthesized by traditional ceramics process. The effect of Pb(Mn 1/3Sb 2/3)O 3 (abbreviated as PMS) and Pb(Ni 1/2W...
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Published in: | Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2005-02, Vol.393 (1), p.36-41 |
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Main Authors: | , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | (Pb
0.95Sr
0.05)[(Mn
1/3Sb
2/3)
x
(Ni
1/2W
1/2)
y
(Zr
1/2Ti
1/2)
z
]O
3 piezoelectric ceramics (abbreviated as PNW–PMS–PZT) with 1
mol% excess PbO, 0.25
wt% CeO
2 and 0.2
wt% MnO
2were synthesized by traditional ceramics process. The effect of Pb(Mn
1/3Sb
2/3)O
3 (abbreviated as PMS) and Pb(Ni
1/2W
1/2)O
3 (abbreviated as PNW) on phase structure, dielectric and piezoelectric properties was investigated in detail. The content of perovskite phase of all ceramics specimens is 100%, the phase structure of PNW–PMS–PZT ceramics changed from tetragonal phase to single rhombohedral phase with the amount of PMS and PNW increased. Take into consideration dielectric constant,
ɛ
r, dielectric loss tan
δ, electromechanical coupling factor
k
p, mechanical quality factor
Q
m, Curie temperature
T
c and sintering temperature, it was concluded that the ceramics with composition of
x
=
0.06,
y
=
0.02,
z
=
0.92 can be used for high-power piezoelectric transformer. These properties include
ɛ
r
=
2138, tan
δ
=
0.0058,
k
p
=
0.613,
Q
m
=
1275,
d
33
=
380
pC/N,
T
c
=
205
°C. |
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ISSN: | 0921-5093 1873-4936 |
DOI: | 10.1016/j.msea.2004.09.046 |