Piezoelectric ceramic re-polarisation system - sets polarisation-dependent parameters in gas atmosphere

摘要

The repolarisation system sets the polarisation dependent parameters of a piezoelectric ceramic precisely such a ceramic is intended for use in telecommunications filters). Measurements are made on the ceramic element between each repolarisation step. Elements made of a ceramic with a high coercive force. They are processed in an atmosphere containing a large percentage of SF6 gas. The gas is directed at the element, flows over it and then passes out through sump.