Insitu corona poling of piezoelectric ceramics
US10636959B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 31, 2017 |
| Grant date | Apr 28, 2020 |
| Priority date | — |
| Expiry date | Oct 24, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB06B1/0622
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present disclosure relates to methods of manufacture of piezoelectric ceramic transducers useable, for example, in an ultrasound probe, using a poling process. The poling is accomplished without contacting transducer elements and by subjecting the piezoelectric ceramic transducer to a corona discharge. The disclosure further describes a system for poling a transducer comprising at least one piezoelectric ceramic component or transducer assembly, a ground plane comprising an electrical polarity, and a corona source connected to a first power source configured to supply a first voltage to the corona source having an electrical polarity opposite the electrical polarity of the ground plane. The at least one piezoelectric ceramic component or transducer assembly is positioned between the corona source and the ground plane within a chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.