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High-temperature piezoelectric bimorph components

25 October 2012

Morgan Technical Ceramics has extended its electro ceramics portfolio, with the launch of a new range of high temperature piezoelectric bimorph components, suitable for sensor and actuator use in a wide range of industrial applications.

Manufactured in the company’s facility in Ruabon, North Wales, the new bimorph components are two-layered PZT (Lead Zirconate Titanate) devices which feature a specially-formulated core created from high temperature conductive epoxy glue.

Some components in the range are also reinforced with a central metal alloy vein, to make them more mechanically stable.  All components can operate in continuous temperatures of up to 180°C, which represents half the Curie temperature of the piezoelectric materials.

PZT bimorphs can be used in a range of applications including oil viscosity monitoring, machine and equipment monitoring, automotive engines, feedback sensors and high temperature accelerometers.  Components from the range are currently being used in the maritime industry for oil viscosity measurement in ship yards, and can effectively work as both an actuator and sensor.

Morgan Technical Ceramics manufactures its bimorph components from high Curie temperature materials including PZT5A4, PZT503 and PZT505.  The materials have been custom made to offer high d31 and coupling coefficients to maximise the signal to noise ratio responses in sensor applications, and enhance the displacement characteristics when used as an actuator device.

The bimorphs are available in a variety of sizes and configurations including squares, rectangles and discs.  Sizes range from 6mm to 74mm in length and 1mm to 43mm in width, to reflect the wide range of applications for which the bimorphs are suitable.  High temperature PZT bimorphs can also be created on a bespoke basis for customers with particular requirements not met by the standard offering. 

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