Temperature Measurements during Microwave Processing: The Significance of Thermocouple Effects
| Autor: | Jeffrey P. Calame, Amikam Birnboim, Yuval Carmel, D. Gershon, Evan Pert, Otto C. Wilson, Tayo Olorunyolemi, Isabel K. Lloyd |
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| Rok vydání: | 2004 |
| Předmět: |
Electromagnetic field
Observational error Fabrication Materials science business.industry Ceramic materials Temperature measurement Computer Science::Other Thermocouple visual_art Thermal Materials Chemistry Ceramics and Composites visual_art.visual_art_medium Optoelectronics Ceramic Physics::Chemical Physics business Microwave |
| Zdroj: | Journal of the American Ceramic Society. 84:1981-1986 |
| ISSN: | 1551-2916 0002-7820 |
| DOI: | 10.1111/j.1151-2916.2001.tb00946.x |
| Popis: | Reliable and accurate temperature measurement during microwave processing of ceramic bodies is controversial. Although thermocouples are routinely used in conventional thermal furnaces, their presence in microwave furnaces can locally distort the electromagnetic field, conduct heat away from the sample, induce thermal instabilities and microwave breakdown, and lead to serious measurement errors. These thermocouple effects have been studied and found to be more pronounced in low- and medium-loss ceramic materials. To decrease the thermocouple effects during the processing of advanced ceramic materials, an optical, noncontact temperature sensing system has been developed, calibrated, and incorporated into a computer-controlled microwave furnace. |
| Databáze: | OpenAIRE |
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