AN093 – Zircona under water vapour up to 1700°C

EXPERIMENTAL

Samples of about 2.2 g of Zirconia (powder) are heated from ambient up to 1700°C at 10 K.min-1.

Gas :
(a) : He + 4% H2O
(b) : He + 12% H2O
(c) : He + 20% H2O

The control of water percentage is explained in application note # AN092.
Crucible : alumina container

AN-093

CONCLUSION

AN-093a

From this equilibrium it can be said that if the percentage of water increases, the reduction process will be not so important : it is what was observed du ing the analysis.