THE METHOD OF STABILIZATION OF WATER PRESSURE DURING THE HIGH-TEMPERATURE CORROSION TESTS OF GRAPHITE MATERIALS OF FISSION AND FUSION REACTORS
https://doi.org/10.52676/1729-7885-2018-4-134-138
Abstract
An important technical problem in the study of high-temperature corrosion of graphite materials and SiC-C structures in water vapor in vacuum is to ensure a stable partial pressure (0.001–1.0 Pa) of water vapor in the sample zone. Since the temperature in the sample zone can reach 1400–1700 K, then it is not possible to locate sensors for measuring the vapor pressure there. The paper proposes a method of using metal surfaces of existing or specially introduced elements of a vacuum system (receivers, tanks, pipelines) as a source of water for their controlled heating. Using the computer model of the gas-vacuum environment of the corrosion plant, the ratio of water pressures at the point of sample location and at the point of sampling of the mass analyzer is calculated. The resulting ratio and the analog signal of the mass analyzer (water peak, 18 amu) are used for PID control of the desorption temperature to achieve the required vapor pressure.
About the Authors
Yevgeniy Chikhray
IETP of al-Farabi KazNU
Kazakhstan
Almaty
Kazakhstan
Almaty
Vladimir Shestakov
IETP of al-Farabi KazNU
Kazakhstan
Almaty
Kazakhstan
Almaty
Saulet Askerbekov
IETP of al-Farabi KazNU
Kazakhstan
Almaty
Kazakhstan
Almaty
Inesh Kenzhina
RSE “Institute of Nuclear Physics” under the Ministry of Energy of the RK
Kazakhstan
Almaty
Kazakhstan
Almaty
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Review
For citations:
Chikhray Ye., Shestakov V., Askerbekov S., Kenzhina I. THE METHOD OF STABILIZATION OF WATER PRESSURE DURING THE HIGH-TEMPERATURE CORROSION TESTS OF GRAPHITE MATERIALS OF FISSION AND FUSION REACTORS. NNC RK Bulletin. 2018;(4):134-138. (In Russ.) https://doi.org/10.52676/1729-7885-2018-4-134-138
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