Oxidation of Ultra-High Temperature HfB2–SiC Ceramic Materials in Humid Air Flow
- Авторы: Simonenko E.1, Simonenko N.1, Mokrushin A.1, Sevastyanov V.1, Kuznetsov N.1
-
Учреждения:
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences
- Выпуск: Том 64, № 14 (2019)
- Страницы: 1849-1853
- Раздел: Inorganic Materials and Nanomaterials
- URL: https://journals.rcsi.science/0036-0236/article/view/169655
- DOI: https://doi.org/10.1134/S0036023619140109
- ID: 169655
Цитировать
Аннотация
The effect of air humidity on the oxidation stability of the ultra-high temperature ceramics HfB2–30 vol % SiC manufactured by reactive hot pressing technique, was studied by thermal analysis. In the air flow with 100% humidity at 23°C (where the water content was ~3 vol %), the weight gain due to HfB2 oxidation started at lower temperatures, as well as the weight loss resulting from boron oxide evaporation at temperatures above 1140°C, too. Optical and scanning electron microscopy with local microanalysis confirmed the observation that much less borosilicate glass appeared on the surface and a significantly different microstructure was in the presence of 3 vol % water in air flow.
Ключевые слова
Об авторах
E. Simonenko
Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences
Автор, ответственный за переписку.
Email: ep_simonenko@mail.ru
Россия, Moscow, 119991
N. Simonenko
Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences
Email: ep_simonenko@mail.ru
Россия, Moscow, 119991
A. Mokrushin
Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences
Email: ep_simonenko@mail.ru
Россия, Moscow, 119991
V. Sevastyanov
Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences
Email: ep_simonenko@mail.ru
Россия, Moscow, 119991
N. Kuznetsov
Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences
Email: ep_simonenko@mail.ru
Россия, Moscow, 119991