Lead Free 200Khz Piezoelectric Disc for Underwater Equipment

              Lead Free 200Khz Piezoelectric Disc for Underwater Equipment

WuHan Piezohannas Tech.Co .,Ltd is a manufactuer of piezoelectric ceramics ,ultrasonic transducers and some other ultrasonic deivce with strong technology force.With a quality management system and research & development sector,our products are extensively used in most applications.

ceramic disc manufacturers

piezo disc vibration sensor

lead free piezoelectric disc

Dimension:

Size:diameter Φ27.94mm, height 13.20mm

Thickness frequency: Fst=200KHz±5%
Resonant impedance: Zrt=max. 30Ω
Static capacitance: CT=660pF±12.5%
Inductive loss: tan δ=max.1.0%
Piezoelectric strain constant: d33≥180P/N
Test environment: at 25 ° C ± 5 ° C, 60% R.H
Test conditions: at 1KHz, 1Vrms

Standard Size of Piezo Discs:

Diameter: 2mm-120mm
Thickness:0.1mm-30mm

Lead-free Piezoelectric Ceramics Material:

 The Co-Al Co-doped Barium Titanate Lead-free Piezoelectric Ceramics was successfully developed by Yuhai company through repeated experiments. By Researching the influence of Co-Al Co-doping on the structure and properties of Barium Titanate-based piezoelectric ceramics, the formulation and preparation technology of Barium Titanate-based piezoelectric ceramics were optimized. Yuhai`s BaTiO3 was prepared by conventional solid-phase sintering method, with the piezoelectric constant d33 (>170pC/N), dielectric loss tgδ≤0.5% and mechanical coupling coefficient  Kp≥0.34.

 

Lead free piezo material BaTiO3			Lead-free Material
Properties			BaTiO3
Dielectric Constant	ɛTr3		1260
Coupling factor	KP		0.34
	K31		0.196
	K33		0.43
	Kt		0.32
Piezoelectric coefficient	d31	10-12m/v	-60
	d33	10-12m/v	160
	g31	10-3vm/n	-5.4
	g33	10-3vm/n	14.3
Frequency coefficients	Np		3180
	N1		2280
	N3
	Nt		2675
Elastic compliance coefficient	Se11	10-12m2/n	8.4
Machanical quality factor	Qm		1200
Dielectric loss factor	Tg δ	%	0.5
Density	ρ	g/cm3	5.6
Curie Temperature	Tc	°C	115
Young's modulus	YE11	<109N/m3	119
Poison Ratio			0.33