Lead-free ceramics for pyroelectric applications

Pyroelectric Ceramics for Infrared Detection Applications

Pyroelectric and dielectric properties of modified PZT and PZ have been studied for their use in infrared detectors. Various material figure-of-merits for their use in infrared detector are calculated including when the pyroelectric element is placed on heat-sink condition. The results are compared with exiting candidate materials.

Electrically induced strain and polarization fatigue in lead-free ceramics

Piezoelectric ceramics have traditionally been used in commercial applications such as actuators and sensors. By far the most popular piezoceramics currently in use are Pb(Zr,Ti)O3-based (PZT) ceramics. PZT ceramics are able to produce large strain and polarization with the application of an electric field, and this is due to the Morphotropic phase boundary (MPB). A MPB is associated with the b...

Sintering of Lead-Free Piezoelectric Sodium Potassium Niobate Ceramics

The potassium sodium niobate, K0.5Na0.5NbO₃, solid solution (KNN) is considered as one of the most promising, environment-friendly, lead-free candidates to replace highly efficient, lead-based piezoelectrics. Since the first reports of KNN, it has been recognized that obtaining phase-pure materials with a high density and a uniform, fine-grained microstructure is a major challenge. For this rea...

Organic pyroelectric materials for device applications

The wide range of applications of thermal imaging devices existing in military, industrial and space fields attract researchers to study pyroelectric materials which exhibit a temperature-dependent spontaneous polarisation. A brief review of pyroelectricity, pyroelectric materials and some commercial applications of these materials we will be given in this paper.

Lead-Free Soldering for Space Applications Lead-Free Solder Body of Knowledge