Metal fusion bonding – Process – Bonding nonmetals with metallic filler
Patent
1994-03-29
1995-11-14
Heinrich, Samuel M.
Metal fusion bonding
Process
Bonding nonmetals with metallic filler
2281245, B23K 119, B23K10136
Patent
active
054658977
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.
REFERENCES:
patent: 2709147 (1955-05-01), Ziegler
patent: 4051582 (1977-10-01), Eschler et al.
patent: 4247034 (1981-01-01), Burkart et al.
patent: 4270691 (1981-06-01), Ishii et al.
patent: 4582240 (1986-04-01), Lux et al.
patent: 4848643 (1989-07-01), Frische et al.
patent: 4895290 (1990-01-01), Dunnrowicz et al.
patent: 5131582 (1992-07-01), Kaplan et al.
patent: 5288351 (1994-02-01), Hoang et al.
patent: 5325012 (1994-06-01), Sato et al.
Dixon Raymond D.
Migliori Albert
Roe Lawrence H.
Heinrich Samuel M.
The Regents of the University of California, Office of Technolog
Wilson Ray G.
LandOfFree
Bonded ultrasonic transducer and method for making does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Bonded ultrasonic transducer and method for making, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bonded ultrasonic transducer and method for making will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1215962