Author/Authors :
Petit، نويسنده , , Johan and Dethare، نويسنده , , Philippe and Sergent، نويسنده , , Alessandra and Marino، نويسنده , , Robert and Ritti، نويسنده , , Marie-Hélène and Landais، نويسنده , , Stéphane and Lunel، نويسنده , , Jean-Luc and Trombert، نويسنده , , Sandrine، نويسنده ,
Abstract :
In this paper we present our results on the sintering of α alumina ceramics by hot isostatic pressing. It describes a simple method for obtaining precise relative density values on our almost 100% dense samples. Then, transparency results are discussed with respect to grain size and residual porosity measurements, comparing them to scattering calculations. Our results are not far from the best reported transmission values: almost 60% for a 1 mm thick sample. The other 40% diffuse light comes from the birefringence of alumina for the most part. However, they are transparent enough to see detailed structures at several kilometers through them.
