Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1476831 | Journal of the European Ceramic Society | 2010 | 7 Pages |
Abstract
A methodology based on a weight loss measurement was used to quantify the volatility of yttria in high temperature water vapor. This method was first assessed on silica. Sintered materials with a shape of pellets were exposed at temperatures between 1000 and 1400 °C in air with 50 kPa of water at atmospheric pressure, under a flowing gas velocity of 5 cm s−1. Besides the volatilisation rate, the nature of the volatile gaseous species was determined using a kinetic study. Knowing the nature of flows in the furnace, partial pressures of yttrium (oxy-)hydroxide in equilibrium over Y2O3 were calculated, and used to assess the enthalpies of formation of YO(OH) and Y(OH)3.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Emilie Courcot, Francis Rebillat, Francis Teyssandier, Caroline Louchet-Pouillerie,