PIEZOELECTRIC PLATES. Features:

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1 PIEZOELECTRIC PLATES Morgan Advanced Materials is a world leader in the design and manufacture of complex electronic ceramic components and assemblies used in a wide range of applications and cutting edge technologies. Morgan s Global Electroceramics Divisions specialise in the development and production of various plate sizes, electrode and metallisation configurations. This range is fabricated from 33 available piezoelectric material formulations to address high power, sensitivity, stability needs in cryogenic temperatures as also in high temperatures and extreme pressure applications. Applications include: 1-3 Composites for SONAR and medical imaging Megasonic cleaning NDT transducers Pressure sensors Tactile feedback Ultrasonic sensors Linear ultrasonic motors Features: Choice of metallisation (Silver, Nickel, Gold, Nickel-Vanadium, Aluminium and others on request) Sputtered and chemically deposited metallisation s available Thickness frequency tuning available on request Wide choice of PZT formulations (Piezoelectric Materials Portfolio) Morgan Advanced Materials is manufacturing what are believed to be the world s thickest piezoelectric ceramic blocks. The blocks, designed for use in ultralow frequency SONAR applications down to 18KHz, are made of high-quality, soft (Navy II) PZT5A1. The blocks offer superb electrical characteristics, are of high sintered density and come in a choice of nine, highly sensitive 'soft' PZT formulations suitable for the manufacture of wide bandwidth 1-3 composite transducers. However, the most striking feature of Morgan's new PZT ceramic blocks is their size, and in particular their thickness reaching a current maximum of 48mm. The ability to manufacture and polarise such large thicknesses of piezoelectric materials represents a step change in the industry.

2 TYPICAL ELECTRODE CONFIGURATIONS Standard Wrap Around Custom Other custom electrode configurations are available on request. DIMENSIONAL RANGE From To Length 1mm (0.04 ) 165mm (6.5 ) Width 1mm (0.04 ) 165mm (6.5 ) Thickness 0.08mm (0.003 ) 48mm (1.9 ) Parts can be produced to the size ranges shown, but not in every combination of dimensions expressed above. STANDARD MECHANICAL TOLERANCES Length & Width Thickness ±0.150mm ±0.05mm Squareness (edge to face) Within 0.15º Flatness (lapped parts) Parallelism 0.012mm (lapped), 0.015mm (sliced) 0.012mm (lapped), 0.06mm (sliced) Tighter mechanical tolerances are achievable but are dependent on the plate length, width and thickness. Wider mechanical tolerances are obtained on large plate components, more information is available on request. METALLISATION TYPE Silver fired thick film Electroless nickel Tin Evaporated Nickel Gold flash Sputtered Gold Nickel Aluminium Vanadium and other available on request Soldering to PZT Ceramics

3 Please follow the guidelines published in our website. TYPICAL IMPEDANCE TRACE (LENGTH MODE)

4 USEFUL EQUATIONS L Capacitance Longitudinal or transversal frequency =... = W Thickness frequency Static displacement = =.. =.. t =. Voltage (static) Effective coupling factor =. =. =... = Planar coupling factor. Mechanical quality factor =.... Ceramic Testing Appropriate statistical methods ranging from AQL s to 100% testing are used on electrical parameters in accordance with EN A brief summary is provided in hard copy and typically includes low field measurements of capacitance, tan delta and the main parameters used to determine piezoelectric activity.

5 Procedures other than this can be negotiated, and additional data requirements (electronic format, sample quantity, etc) are available on request.