THE POSSIBILITY OF USE OF THERMOELECTRIC TRANSDUCERS BASED ON THE REFRACTORY OXYGEN-FREE COMPOUNDS FOR MEASURING THE TEMPERATURE OF AGGRESSIVE ENVIRONMENTS
In the work the possibility of use of thermoelectric transducers based on the refractory oxygen-free compounds for measuring the temperature of aggressive environments is represented; also the reproducibility of functional parameter of thermo-electromotive force of the thermoelectric transducer is i...
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| Видавець: | The State Enterprise "Engineering Center "Drying"" |
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| Дата: | 2015 |
| Автори: | , , |
| Формат: | Стаття |
| Мова: | Ukrainian |
| Опубліковано: |
The State Enterprise "Engineering Center "Drying""
2015
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| Онлайн доступ: | https://ceramic-journal.org.ua/index.php/csl/article/view/8 |
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Організація
Ceramics: Science and Life| Резюме: | In the work the possibility of use of thermoelectric transducers based on the refractory oxygen-free compounds for measuring the temperature of aggressive environments is represented; also the reproducibility of functional parameter of thermo-electromotive force of the thermoelectric transducer is investigated for the first time. In the course of research, the binary systems WC-SIALON/soot-SIALON, TiB2-SIALON/soot-SIALON, ZrC-SIALON/B4C- SIALON, TaN-SIALON/carbon fibre were used. It is determined that under the use of composite materials the effect of thermal compensation is possible, which manifests itself in the fact that materials WC-SIALON/soot-SIALON in the temperature range up to 250 °C show a negative value of thermo-electromotive force due to the large negative value of admixtures with negative coefficient of thermo- electromotive force. It is proven that the use of ceramic composites ZrC- SIALON/B4C-SIALON gives the advantages for creation of highly efficient thermoelectric transducers, in which the processes pass poorly. Unfortunately, ceramic transducers have some disadvantages, and the main of them is the large inertia, which is shown that the thermocouples are insensitive to the peak changes of temperature. |
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