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Monitoring of binder removal from injection molded ceramics using air-coupled ultrasound at high temperature
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UNSPECIFIED (1999) Monitoring of binder removal from injection molded ceramics using air-coupled ultrasound at high temperature. IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL, 46 (3). pp. 647-653. ISSN 0885-3010.
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Abstract
A pair of capacitance-type air-coupled ultrasonic transducers have been constructed that were capable of operating in air at temperatures of 500 to 600 degrees C. These devices were then used to monitor the pyrolytic removal of organic binder from injection molded silicon nitride ceramic components using air-coupled ultrasound inside a furnace at elevated temperatures. Through-thickness waveforms were obtained in the ceramic and compared with simultaneous measurements of the mass of the sample. Both the ultrasonic velocity and signal amplitudes could be used to monitor the change in mass of the injection molded ceramic, and other phenomena (such as softening and redistribution of the binder) were observed.
Item Type: | Journal Article | ||||
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Subjects: | T Technology > TA Engineering (General). Civil engineering (General) T Technology > TK Electrical engineering. Electronics Nuclear engineering |
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Journal or Publication Title: | IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL | ||||
Publisher: | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC | ||||
ISSN: | 0885-3010 | ||||
Official Date: | May 1999 | ||||
Dates: |
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Volume: | 46 | ||||
Number: | 3 | ||||
Number of Pages: | 7 | ||||
Page Range: | pp. 647-653 | ||||
Publication Status: | Published |
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