Modification of the composite multi-layer oxide ceramic coating on meteoroid shielding element by compression plasma flow

31st International Conference on Equations of State for Matter

Astashinski, V.M.^1 ; Khramtsov, P.P.^1 ; Hryshchanka, U.M.^1 ; Chernik, M.Yu.^1 ; Vasetskij, V.A.^1 ; Shikh, I.A.^1 ; Doroshko, M.V.^1 ; Makhnach, A.I.^1

Heat and Mass Transfer Institute, National Academy of Sciences of Belarus, P Brovka Street 15, Minsk

220072, Belarus^1

关键词: Compression plasma flow;    High energy plasmas;    Multi-layer-coating;    Oxide ceramic coating;    Plasma-forming substances;    Spectral measurement;    Vacuum chambers;    Visual examination;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/774/1/012192/pdf
DOI  :  10.1088/1742-6596/774/1/012192

来源: IOP

【 摘 要 】

The aim of this work is investigation of the influence of high-energy plasma impact on composite multi-layer coating (NiAl as a sublayer and Al2O3as a top coat) on meteoroid shielding element. In order to reach this goal qausi-stationary plasma accelerator with impulse gas feeding was used. Experiments were conducted with use of helium and hydrogen gas mixture and nitrogen as plasma forming substance. Plasma accelerator generates plasma jet with electron temperature ≈ 150 kK and electron density (2.5-4) × 1016cm-3. Visual examination, photography and spectral measurements were made through special vacuum chamber optical windows.