Compositions – Piezoelectric
Patent
1985-07-26
1988-06-14
Anderson, Philip
Compositions
Piezoelectric
264 44, 264 60, 264 61, 264 66, 501 82, 501 94, C04B 3500, C04B 3806, B28B 126
Patent
active
047510137
ABSTRACT:
A piezoelectric ceramic powder is, together with a binder, processed to a granulate. This granulate is mixed with a pearl polymer to a mixture. The mixture is pressed to a suitable shape, and then in a first firing step the binder and the pearl polymer are fired out. Preferably the first firing process is followed by a second firing step for sintering. Thereafter mechanical fabrication may take place, to give the end product its shape. The firing out of the pearl polymer results in a porous piezoelectric ceramic, with which, when used in an ultrasonic transducer, a high transducer effectiveness, sharp ultrasonic pulses with little edge radiation as well as a good electric and acoustic adaptation can be achieved.
REFERENCES:
patent: 2430013 (1947-11-01), Hansell
patent: 2996389 (1961-08-01), Fernhof
patent: 3258349 (1966-06-01), Scott
patent: 3470276 (1969-09-01), Ohno
patent: 4217684 (1980-08-01), Brisken et al.
patent: 4230589 (1980-10-01), Ogawa
patent: 4234558 (1980-11-01), Arendt et al.
patent: 4563432 (1986-01-01), Ehlert et al.
"Experimentelle Untersuchungen zum Aufbau von Ultraschallbreitbandwandlern", Biomedizinische Technik, vol. 27, Book 7-8, pp. 182-185.
Kaarmann Hans
Lubitz Karl
Mohaupt Jutta
Vogt Martina
Wersing Wolfram
Anderson Philip
Jay Mark H.
Siemens Aktiengesellschaft
LandOfFree
Porous piezoelectric material and method for making it does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Porous piezoelectric material and method for making it, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Porous piezoelectric material and method for making it will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-503472