A new phenomenon has been observed -the activated sintering of a zirconium ceramic in the hydrogen-nitrogen plasma of a glow discharge. It is shown that the activation energy is considerably lower than the activation energy for sintering in a vacuum furnace. This makes it possible to reduce sintering temperature, refine the grains, and improve the mechanical properties of the ceramic. It is proposed that the mechanism by which sintering is activated is connected with the activating effect of hydrogen during a structural transformation involving the formation of oxynitride phases.
|Журнал||Russian Physics Journal|
|Состояние||Опубликовано - 1996|
ASJC Scopus subject areas
- Physics and Astronomy(all)