| 摘要 |
1,266,144. Ultrasonic transducers. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. 26 March, 1969 [3 April, 1968], No. 16046/68. Heading H4J. In an ultrasonic transducer crystal having electrodes on opposite front and rear faces, a backing member of electrically conductive material is connected to the rear electrode by conductive cement comprising a mixture of epoxy resin and platelets of silver. The backing material is polyester or epoxy resin filled with silver coated glass spheres and further loaded with heavy metal powder such as tungsten. |
