Use of aluminum nitride to obtain temperature measurements in a high temperature and high radiation environment

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United States of America Patent

PATENT NO 9322720
APP PUB NO 20160018270A1
SERIAL NO

14186244

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An aluminum nitride piezoelectric ultrasonic transducer successfully operates at temperatures of up to 1000° C. and fast (>1 MeV) neutron fluencies of more than 1018 n/cm2. The transducer comprises a transparent, nitrogen rich aluminum nitride (AlN) crystal wafer that is coupled to an aluminum cylinder for pulse-echo measurements. The transducer has the capability to measure in situ gamma heating within the core of a nuclear reactor.

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U S DEPARTMENT OF ENERGY1000 INDEPENDENCE AVE S W GC-62 6F-048 WASHINGTON DC 20585-0162

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Blasi, Raymond J North Huntingdon, US 4 36
Parks, David A Tulsa, US 19 209
Tittman, Bernhard R State College, US 1 1
Wernsman, Bernard R Jefferson Hills, US 6 47

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