Research methods of plasma stream interaction with heat-resistant materials

31st International Conference on Equations of State for Matter

Tyuftyaev, A.S.^1 ; Gadzhiev, M.Kh.^1 ; Sargsyan, M.A.^1 ; Chinnov, V.F.^1 ; Demirov, N.A.^1 ; Kavyrshin, D.I.^1 ; Ageev, A.G.^2 ; Khromov, M.A.^1

Joint Institute for High Temperatures, Russian Academy of Sciences, Izhorskaya 13 Bldg 2, Moscow

125412, Russia^1

National Research University, Moscow Power Engineering Institute, Krasnokazarmennaya 14, Moscow

111250, Russia^2

关键词: Automated systems;    Heat resistant material;    Interacting system;    Ionic composition;    Rate of mass loss;    Surface temperatures;    Three-wavelengths;    Video visualization;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/774/1/012204/pdf
DOI  :  10.1088/1742-6596/774/1/012204

来源: IOP

【 摘 要 】

An experimental automated system was designed and constructed for studying the parameters and characteristics of non-stationary interacting system high-enthalpy-plasma stream-investigated sample: enthalpy of plasma in the incident stream; speed and temperature of plasma stream; temperature of electrons and heavy particles, ionic composition and their spatial distribution; heat flux incident on the sample (kW/cm2); surface temperature of the sample; ablation of the sample material, and others. Measurements of achievable plasma heat flux levels are carried out by calorimetry of plasma streams incident on the surface of multisection copper calorimeter. Determination of acceleration characteristics for profiled plasma torch nozzle, as well as the gas flow rate is produced by measuring the total pressure using the Pitot tube. Video visualization of interacting system is carried out using synchronized high-speed cameras. Micropyrometry of the selected zone on the sample surface is carried out by high-speed, three-wavelength pyrometer. To measure the rate of mass loss of the sample, in addition to the weighing method of evaluation the methods of laser knife and two-position stereoscopy are used. Plasma and sample emission characteristics are performed with two separate spectrometers.