Piezoelectric materials used in a wide range applications including micro actuators accelerometers generators sensors sonic




A new binderless thick-film piezoElectric paste
 


Darryl P.J Cotton* BEng AMIMechE GSMIEEE,

Paul H Chappell BSc PhD CEng MIEE MIPEM MIEEE,

Andy Cranny BSc PhD CPhys MInstP,

Neil M White BSc PhD CEng FIEE FInstP CPhys SMIEEE


School of Electronics and Computer Science,

Room 1001, Level 1,

Building 86,

University of Southampton,

Southampton,

SO17 1BJ


Tel:  (023) 80599204

Fax: (023) 80592901

Email: dpjc03r@ecs.soton.ac.uk

 


Abstract


This paper presents an investigation into a screen printable piezoelectric paste formulated from a blend of PZT-Pz29 powders of different mean particle size mixed in an organic vehicle. In order to enhance d33 properties of the thick-film (a piezoelectric coefficient), no binder Material was mixed into the paste. The d33 coefficient and maximum applied Electrical field of devices processed at peak temperatures of 150ºC, 200ºC, 750ºC, 850ºC and 1000ºC were measured and the film adhesion assessed using scratch and tape tests. The applications that would benefit from these enhanced properties are also discussed.


The thick-films produced at these processing temperatures showed good adhesion to 96% alumina substrates. They also showed the ability to withstand high electrical fields and a significant enhancement in d33 when compared to thick-film Materials processed at similar temperatures using polymer or glass binders. A maximum average d33 value of 168pCN-1 was obtained for samples pr

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    Piezoelectric materials used in a wide range applications including micro actuators accelerometers generators sensors sonic

    A new binderless thick-film piezoElectric paste
     


    Darryl P.J Cotton* BEng AMIMechE GSMIEEE,

    Paul H Chappell BSc PhD CEng MIEE MIPEM MIEEE,

    Andy Cranny BSc PhD CPhys MInstP,

    Neil M White BSc PhD CEng FIEE FInstP CPhys SMIEEE


    School of Electronics and Computer Science,

    Room 1001, Level 1,

    Building 86,

    University of Southampton,

    Southampton,

    SO17 1BJ


    Tel:  (023) 80599204

    Fax: (023) 80592901

    Email: dpjc03r@ecs.soton.ac.uk

     


    Abstract


    This paper presents an investigation into a screen printable piezoelectric paste formulated from a blend of PZT-Pz29 powders of different mean particle size mixed in an organic vehicle. In order to enhance d33 properties of the thick-film (a piezoelectric coefficient), no binder Material was mixed into the paste. The d33 coefficient and maximum applied Electrical field of devices processed at peak temperatures of 150ºC, 200ºC, 750ºC, 850ºC and 1000ºC were measured and the film adhesion assessed using scratch and tape tests. The applications that would benefit from these enhanced properties are also discussed.


    The thick-films produced at these processing temperatures showed good adhesion to 96% alumina substrates. They also showed the ability to withstand high electrical fields and a significant enhancement in d33 when compared to thick-film Materials processed at similar temperatures using polymer or glass binders. A maximum average d33 value of 168pCN-1 was obtained for samples pr
    1234567891011121314151617181920212223NextPage
    << redesign however more compact incorporates piezo actuators This actuator needs a high drive current and its residual magnetic needsRemove each fuel fire shutoff valve actuator with PN the aeroplane and replace it with a fuel fire shutoff valve actuator >>