Half-hard materials

Piezoceramic materials for power ultrasonic

FERRO HARD AND MEDIUM HARD MATERIALS

Ferrohard and medium hard materials with different permittivity are used in ultrasonic transceivers, piezo transformers, piezo drivers and other devices where electrical and mechanical influences on piezo elements are high and dielectric losses are important.

ESSENTIAL CHARACTERISTICS

Simbol	Unit	PZT-23	PBZT-7	PBZT-8	PZT-43	PZT-47	PZT-42	PZT-Ct-3	PCM-41
T_k	°C	280	210	290	280	290	275	280	290
ε^t₃₃/ε₀	-	1000	1620	1400	1400	1450	1300	1400	1400
ε^t₁₁/ε₀	-	1200	2250	-	-	-	-	-	-
tg δ, max	10^-2	0.7	1,0	0,35	0,6	0,52	0,55	0,55	0,4
tg δ_c	10^-2	3.0	3,5	1,0	1,7	-	2,0	-	-
Q_m	-	300	350	1120,0	1100	900	850	800	1400
v^E₁	10³m/s	3,3	3,1	3,2	3,2	-	3,2	3,3	–
σ_p	-	0,33	0,28	-	0,33	-	-	0,35	–
k_p	-	0,50	0,54	0,56	0,52	0,56	0,54	0,55	0,58
k₁₅	-	0,60	0,66	-	-	-	0,68	-	-
k₃₃	-	0,65	0,68	0,68	0,64	-	0,69	-	0,68
d₃₁	10^-12C/N	-120	-140	-140	-125	-132	-130	-140	-135
d₃₃	10^-12C/N	240	330	315	280	290	280	275	315
d₁₅	10^-12C/N	365	575	-	-	-	-	-	-
g₃₁	10^-3V*m/N	-13,6	-9,8	-11,3	-10,1	-10,3	-11,3	-11,3	-10,9
g₃₃	10^-3В*м/Н	27,1	23,0	25,4	22,6	22,0	24,3	22,2	25,4
(RFD)_p	%	2,5	-	-	-	-	0,40	-	-
(RFD)_sh	%	2,7	-	-	-	-	-	-	-
(RFD)_c	%	4,4	-	-	-	-	-	-	-
T_op	°C	150	150	200	200	-	185	150	-
ρ_v	At 100°C,10⁸, Ω*m	5	5	5	5	-	-	5	-
ρ	10³kg/m³	7,6	7,3	7,6	7,5	7,7	7,5	7,5	7,85

Notation Conventions
T_k	Curie point
ε^t₃₃/ε₀ε^t₁₁/ε₀	Relative Permittivity
tg δ	Dielectric losses in weak fields (E=25 kV/m)
tg δ _s	Dielectric losses in strong fields (E=300 kV/m)
Q_m	Mechanical Q
v₁^E	Sound velocity
σ_p	Planar Poisson coefficient
d₃₁, d₃₃, d₁₅	Piezoelectric Modules
g₃₁, g₃₃	Electrical constants on a voltage (Sensitivity in a mode of reception);
T_op	Recommended operating temperature
ρ_v	Electrical volume resistivity
ρ	Density
Electro-mechanical coupling coefficients
k_p	Planar mode
k₁₅	Shear mode
k₃₃	Thickness tension-compression mode
(RDF)_p	Relative deviation of frequency Planar mode
(RDF)_sh	Relative deviation of frequency Shear mode
(RDF)_c	Relative deviation of frequency Thickness tension-compression mode

ON PURCHASE
(+7 495) 530-00-31 and 535-26-90 fax 534-22-67
or
info@elpapiezo.ru
or
order directly from here.

ON PURCHASE
+7 495 530 00 31 and 535 26 90 fax +7 495 534 22 67
or
info@elpapiezo.ru
or
order directly from here.