Short-Term Oxidation of HfB<sub>2</sub>-SiC Based UHTC in Supersonic Flow of Carbon Dioxide Plasma
Abstrak
The short-term (5 min) exposure to the supersonic flow of carbon dioxide plasma on ultrahigh-temperature ceramics of HfB<sub>2</sub>-30vol.%SiC composition has been studied. It was shown that, when established on the surface at a temperature of 1615–1655 °C, the beginning of the formation of an oxidized layer takes place. Raman spectroscopy and scanning electron microscopy studies showed that the formation of a porous SiC-depleted region is not possible under the HfO<sub>2</sub>-SiO<sub>2</sub> surface oxide layer. Numerical modeling based on the Navier–Stokes equations and experimental probe measurements of the test conditions were performed. The desirability of continuing systematic studies on the behavior of ultrahigh-temperature ZrB<sub>2</sub>/HfB<sub>2</sub>-SiC ceramics, including those doped with various components under the influence of high-enthalpy gas flows, was noted.
Topik & Kata Kunci
Penulis (15)
Aleksey V. Chaplygin
Elizaveta P. Simonenko
Mikhail A. Kotov
Vladimir I. Sakharov
Ilya V. Lukomskii
Semen S. Galkin
Anatoly F. Kolesnikov
Anton S. Lysenkov
Ilya A. Nagornov
Artem S. Mokrushin
Nikolay P. Simonenko
Nikolay T. Kuznetsov
Mikhail Y. Yakimov
Andrey N. Shemyakin
Nikolay G. Solovyov
Akses Cepat
- Tahun Terbit
- 2024
- Sumber Database
- DOAJ
- DOI
- 10.3390/plasma7020017
- Akses
- Open Access ✓