Matching layer for adjusting acoustic impedance in ultrasonic transducer, is arranged on surface of transducer and embedded with polymer resin in particle-like ceramic, where ceramic is provided in form of powder and granulate

摘要

The layer is arranged on a surface of an ultrasonic transducer and embedded with a polymer resin i.e. epoxy resin, in a particle-like ceramic. The particle-like ceramic is in the form of powder formed from particles and in the form of granulate formed from ceramic particles that are connected with one another. The powder possesses middle particle size in the range of 5 micrometer to 55 micrometer, and the granulate possesses middle particle size in the range of 50 micrometer to 100 micrometer. An independent claim is also included for a method for manufacturing a matching layer.