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

An aluminum nitride piezoelectric ultrasonic transducer successfully operates at temperatures of up to 1000.degree. C. and fast (>1 MeV) neutron fluencies of more than 10.sup.18 n/cm.sup.2. 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.
Authors:
; ; ;
Publication Date:
OSTI Identifier:
1248874
Report Number(s):
9,322,720
14/186,244
DOE Contract Number:
NR0000031
Resource Type:
Patent
Resource Relation:
Patent File Date: 2014 Feb 21
Research Org:
Bechtel Marine Propulsion Corporation, West Mifflin, PA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
22 GENERAL STUDIES OF NUCLEAR REACTORS; 36 MATERIALS SCIENCE; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY