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Zibo Yuhai Electronic Ceramic Co., Ltd.
Address : No.57 Chuangye Road, Development Area Boshan, Zibo City, Shandong Prov. P.R. of China
Tel : +86-0533-4230012
Fax : +86-0533-4231700
Email : sales@zbyuhai.com

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HARD PZT

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Product Description

Parameters

Hard PZT

High power or "hard" PZT ceramics can withstand high levels of electrical excitation and mechanical stress. These materials are suited for high voltage or high power generators and transducers.

PZT-4 Series

This material range is ideally suited for ultrasonic cleaning, sonar, and other high power acoustic radiation applications. These materials are designated as PZT-4 series type piezo materials and are capable of producing large mechanical drive amplitudes while maintaining low mechanical and dielectric losses. In addition, it can be used under both constant and repetitive conditions.

PZT-82

This material range is used in high power applications, even though its piezoelectric activity level is slightly lower than PZT400 series types. With an extremely high mechanical quality factor and extremely low loss factor, PZT800 series materials have the ultimate power handling capability.

Hard piezo material exhibits: smaller piezoelectric constants, lower permittivity, smaller dielectric constants, lower dielectric losses, smaller electromechanical coupling factors, high mechanical quality factors, a higher coercive field, better linearity, and is harder to be depolarized.

The ideal application of hard piezo materials is high power transducer needs.

Yuhai hard pizeo materials are PZT-4, PZT-8, PCrN-4 and PBaS-4.

Typical value of piezoelectric ceramic materials performance

"Hard" PZT materials
Properties			PZT-41	PZT-42	PZT-43	PZT-82	PCrN-4	PBaS-4
Dielectric Constant	ɛTr3		1050	1250	1420	1100	1600	1900
Coupling factor	KP		0.58	0.58	0.58	0.52	0.6	0.59
	K31		0.32	0.33	0.34	0.3	0.35	0.34
	K33		0.66	0.67	0.68	0.57	0.68	0.68
	Kt		0.48	0.48	0.48	0.4	0.45	0.49
Piezoelectric coefficient	d31	10-12m/v	-106	-124	-138	-100	-156	-160
	d33	10-12m/v	260	280	300	240	350	380
	g31	10-3vm/n	-11.4	-11.2	-11	-10.3	-11	-9.5
	g33	10-3vm/n	28	25.3	24	25	24.7	22.6
Frequency coefficients	Np		2280	2200	2160	2280	2100	2200
	N1		1671	1613	1583	1671	1539	1613
	N3		1950	1900	1875	1950	1850	1850
	Nt		2250	2200	2200	2300	2200	2200
Elastic compliance coefficient	Se11	10-12m2/n	11.8	12.7	13.2	11.6	14	13.2
Machanical quality factor	Qm		1000	800	600	1200	400	2200
Dielectric loss factor	Tg δ	%	0.3	0.4	0.5	0.3	0.6	0.5
Density	ρ	g/cm3	7.5	7.5	7.5	7.6	7.5	7.5
Curie Temperature	Tc	°C	320	320	320	310	310	310
Young's modulus	YE11	<109N/m3	85	79	76	86	71	76
Poison Ratio			0.3	0.3	0.3	0.3	0.3	0.33

P-41	is equal to PZT-4D hard PZT. It is designed for higher dielectric constant, high Q m , high coercive field, high coupling and high stiffness required high power high driving transducers etc.
P-42	Is a modified hard PZT, higher dielectric constant of P-41.
P-43	is a modified hard PZT. It is developed for higher dielectric constant, high coupling and high stiffness required high power high driving etc. transducers
P-82	Is equal to PZT-8, hard PZT for higher mechanical quality factor, lower dielectric loss required and much higher power handling capability etc. transducers.
PCrN-4	is a modified PZT dedicated for extremely high power high driving etc. receiver and transmitting dual function piezo
PbaS-4	is a modified hard PZT developed for extremely high dielectric constant, high Q m , high stiffness and low dissipation factor required high frequency transducers etc.