Enviar artigo por via de e-mail Распределение температуры в области контактной электрической поверхности графита
- Autores: Костановский А.В.1, Зеодинов М.Г.1, Костановская М.Е.1, Пронкин А.А.1
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Afiliações:
- Объединенный институт высоких температур РАН
- Edição: Volume 62, Nº 1 (2024)
- Páginas: 143-146
- Seção: Short Communications
- URL: https://cijournal.ru/0040-3644/article/view/653040
- DOI: https://doi.org/10.31857/S0040364424010162
- ID: 653040
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Fig. 1. Working section of the installation for measuring contact electrical resistance: 1 – vacuum chamber body, 2 – lower current lead, 3 – quartz tube, 4 – samples, 5 – thermocouples, 6 – upper current lead, 7 – weights, 8 – contact surface, 9 – IR pyrometer, 10 – linear module for moving the pyrometer along the vertical axis of the sample, 11 – vacuum post VUP-5.
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Fig. 2. Temperature dependences on the distance to the contact surface, measured at P = 105 kPa (positive electrode at the bottom) and a sequential increase in current: 1 – 52 A, 2 – 61, 3 – 73, 4 – 89, 5 – 100; with a sequential decrease in current: 6 – 93 A, 7 – 79, 8 – 71, 9 – 59, 10 – 42.
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Fig. 3. Dependences of temperature T on current I: 1 – measured in the center of the isothermal section of the sample, in which there is no contact plane; 2 – temperature Tmax, measured in the contact plane (P = 105 kPa, positive electrode at the bottom).
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