| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Swingler, J.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (14/14 displayed)
- 2016Data for the paper: The importance of the film structure during self-powered ibuprofen salicylate drug release from polypyrrole electrodeposited on AZ31 Mg
- 2012The effects of porosity, electrode and barrier materials on the conductivity of piezoelectric ceramics in high humidity and dc electric fieldcitations
- 2012The influence of electrode materials on the electrical degradation process of lead zirconate titanate under harsh operating environmentcitations
- 2011Electrical conduction mechanisms in piezoelectric ceramics under harsh operating conditionscitations
- 2010Current leakage and transients in ferroelectric ceramics under high humidity conditionscitations
- 2009The effect of relative humidity, temperature and electrical field on leakage currents in piezo-ceramic actuators under dc biascitations
- 2009Micro-computer tomography-An aid in the investigation of structural changes in lead zirconate titanate ceramics after temperature-humidity bias testingcitations
- 2009Study of temperature change and vibration induced fretting on intrinsically conducting polymer contact systemscitations
- 2006The contact resistance force relationship of an intrinsically conducting polymer interfacecitations
- 2006The influence of thermal cycling and compressive force on the resistance of poly(3,4-ethylenedioxythiophene)/poly(4-styrenesulfonic acid)-coated surfacescitations
- 2005The fretting characteristics of intrinsically conducting polymer contacts
- 2002Fretting corrosion studies of an extrinsic conducting polymer and tin Interfacecitations
- 2002Fretting corrosion and the reliability of multicontact connector terminalscitations
- 2000Degradation of road tested automotive connectorscitations
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article
The effect of relative humidity, temperature and electrical field on leakage currents in piezo-ceramic actuators under dc bias
Abstract
A key advantage of piezo-ceramic technology is the extremely low power consumption that can be achieved compared to electromagnetic technology. However leakage currents through the ceramic limit the minimum power consumption achievable particularly when exposed to harsh environments. This paper presents a systematic study of temperature, humidity and electrical field on the electrical resistance of soft PZT ceramics under dc bias. Temperature-humidity bias testing methods are used to assess electrical resistance changes in soft PZT beams. Results show that changes in electrical resistance occur in two stages. The first stage shows little dielectric change and that its duration is dependent on the ambient relative humidity. The second stage is characterized by a much more rapid fall in ceramic resistance and is not as dependent on the relative humidity. Evidence is presented showing that the leakage currents are caused by an ionic migration process. Mathematical models are presented to describe the degradation process and to predict the onset of resistance. These models are shown to give good agreement with experimental results. The role of electrode materials and ceramic microstructure in the development of leakage currents is discussed