Bonded ultrasonic transducer and method for making
Abstract
An ultrasonic transducer is formed as a diffusion bonded assembly of piezoelectric crystal, backing material, and, optionally, a ceramic wear surface. The mating surfaces of each component are silver films that are diffusion bonded together under the application of pressure and heat. Each mating surface may also be coated with a reactive metal, such as hafnium, to increase the adhesion of the silver films to the component surfaces. Only thin silver films are deposited, e.g., a thickness of about 0.00635 mm, to form a substantially non-compliant bond between surfaces. The resulting transducer assembly is substantially free of self-resonances over normal operating ranges for taking resonant ultrasound measurements. 12 figs.
- Inventors:
- Issue Date:
- Research Org.:
- Univ. of California (United States)
- OSTI Identifier:
- 131912
- Patent Number(s):
- 5465897
- Application Number:
- PAN: 8-220,306
- Assignee:
- Univ. of California, Office of Technology Transfer, Alameda, CA (United States)
- DOE Contract Number:
- W-7405-ENG-36
- Resource Type:
- Patent
- Resource Relation:
- Other Information: PBD: 14 Nov 1995
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; ULTRASONIC TESTING; TRANSDUCERS; DESIGN; PIEZOELECTRICITY; FABRICATION
Citation Formats
Dixon, R D, Roe, L H, and Migliori, A. Bonded ultrasonic transducer and method for making. United States: N. p., 1995.
Web.
Dixon, R D, Roe, L H, & Migliori, A. Bonded ultrasonic transducer and method for making. United States.
Dixon, R D, Roe, L H, and Migliori, A. Tue .
"Bonded ultrasonic transducer and method for making". United States.
@article{osti_131912,
title = {Bonded ultrasonic transducer and method for making},
author = {Dixon, R D and Roe, L H and Migliori, A},
abstractNote = {An ultrasonic transducer is formed as a diffusion bonded assembly of piezoelectric crystal, backing material, and, optionally, a ceramic wear surface. The mating surfaces of each component are silver films that are diffusion bonded together under the application of pressure and heat. Each mating surface may also be coated with a reactive metal, such as hafnium, to increase the adhesion of the silver films to the component surfaces. Only thin silver films are deposited, e.g., a thickness of about 0.00635 mm, to form a substantially non-compliant bond between surfaces. The resulting transducer assembly is substantially free of self-resonances over normal operating ranges for taking resonant ultrasound measurements. 12 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Nov 14 00:00:00 EST 1995},
month = {Tue Nov 14 00:00:00 EST 1995}
}
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