Piezoelectric Ceramics

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With the rapid development of high technologies, piezoelectric ceramic (special inorganic non-metallic material) is more and more popular in a variety of applications. As an ultrasonic transducer manufacturing expert, CHENGCHENG WEIYE never stops extending piezoelectric ceramic element's applications, bringing it from high technology field into our daily life to better serve us.

Piezoelectric ceramic is mainly used to make ultrasonic transducer, due to its powerful ability to convert electric energy into ultrasonic vibration, which excels in detecting fish shoal’s location and shape, and conducting nondestructive inspection for metal. Besides, piezoelectric ceramic wafer is an ideal material for ultrasonic cleaner, medical ultrasonic equipment, and ultrasonic manufacturing equipment for processing plastics and even metals, like ultrasonic cutting machine, ultrasonic welding machine and ultrasonic soldering iron.

We are able to supply all kinds of piezoelectric ceramic materials, like piezoelectric ceramics for transducer, piezoelectric ceramics for cleaner, piezoelectric ceramics for reversing radar, piezoelectric ceramics for atomizer, etc.

The piezoelectric ceramics we provide are more reliable and durable. Catering to different industries, we have the following plans:
1. Thanks to its low heat dissipation and high electro-acoustic conversion efficiency, P8 material is applicable for military industry. Besides, due to its non-fragile property, P8 material is a great choice for welding, cleaning and other industries. It has been well received by French ACTEON, American Blackstone and other companies.
2. P4 is ideal for ultrasonic atomizer industry.
3. P5 is applicable for detection industry.

Note
1. Because silver surface of the piezoelectric ceramics could get easily oxidized, it is a must to properly seal them before use and immediately use them after unsealing.
2. Please always handle with care.

Piezoelectric Ceramics Properties

Property Parameter	Symbol		Indicator									Tolerance
Property Parameter	Symbol		P-33	P-41	P-42	P-44	P-51	P-52	P-53	P-61	P-81	Tolerance
Electrome-chanical coupling coefficient	K_p		0.6	0.56	0.58	0.6	0.65	0.64	0.68	0.53	0.53	±6.0%
	K₃₁		0.36	0.33	0.34	0.36	0.38	0.37	0.33	0.3	0.31
	K₃₃		0.7	0.66	0.67	0.7	0.74	0.76	0.76		0.63
	K₁₅		0.7	0.66	0.67	0.7	0.72	0.75	0.76	0.61	0.66
	K_t		0.47	0.48	0.48	0.48	0.5	0.49	0.55	0.47	0.47
Relative permittivity	ε	T	1725	1050	1275	1350	2100	3250	3000	1100	1025	±12.5%
	ε	r 3

	ε	T	1725	1450	1700	1900	2400	3500	4100	1100	1400
	ε	r 1

Dielectric loss factor	tgδ		0.02	0.005	0.006	0.005	0.02	0.02	0.02	0.008	0.004	≤
Elastic compliance constant (*10^-12m²/N)	S	E	15	12	11.5	13	15	15.5	15		11	±10%
	S	11

	S	D	9	8.5	8	8.5	9	9	8.8		8.5
	S	33

	S	D	25	21	21	21.5	22	23	22		21
	S	55

Piezoelectric strain constant (*10^-12m/v or C/N)	d₃₁		160	-110	-130	-150	-210	-260	-270		-100	±12.5%
	d₃₃		390	250	290	320	450	575	590		225
	d₁₅		480	460	500	530	710	950	1050		450
Mechanical quality factor	Q_m		75	500	500	400	70	65	65	800	800	≥
Frequency constant (Hz·m)	N_d		1950	2250	2200	2200	2000	1940	1950	2350	2300	±5%
	N₁		1470	1650	1700	1600	1450	1450	1480	1700	1700
	N₃		1880	1950	2050	2000	1900	1900	1900		1960
	N₅		1130	1230	1230	1230	1200	1200	1200	1300	1230
	N_t		2250	2270	2300	2300	2250	2300	2300	2300	2280
Velocity (m/s)	V_t		3000	3460	3500	3300	3000	3010	3040		3500	±5%
	V₁		2940	3300	3400	3200	2900	2900	2900		3400
	V₃		3760	3900	4100	4000	3800	3800	3800		3920
	V₅		2260	2460	2460	2460	2400	2400	2400		2460
	V_t		4500	4540	4600	4600	4500	4600	4700		4560
Curie temperature (℃)	T_c		335	310	300	300	260	180	200	320	300	≥
Aging rate ( % / time decade)	A_Nd		0.2	1.3	1.3	1.2	0.35	0.35	1.3	0.1	1.3
	A_Kp		-0.25	-2.5	-2	-1.8	-0.4	-0.25	-1.7	0.5	-2
	Aε		-1.5	-4.5	-4.5	-4	-1.5	-2	-3.8	0.8	-4
Temperature Stability (% change from -10℃- 50℃ , benchmark: 25 ℃ )	ΔNd/N		1	1	1.5	1	1.5	2	2	0.35	1.5
	Δε/ε		15	9.5	9.5	9	20	40	40		9
Strong field of dielectric properties ( T=25℃ E=400V)	tgδ			0.04	0.04	0.04					0.01	≤
Strong field of dielectric properties ( T=25℃ E=400V)	Δε/ε			0.18	0.2	0.17					0.06	≤
Note: All the property parameters expect the Curie temperature and density are measured ten days after polarization.