| 摘要 |
<p>The invention relates to alpha-alumina with a purity of greater than or equal to 5 99.99%, in the form of spherical particles (1) with a size predominantly greater than or equal to 850 μm. The invention also relates to the use of alpha-alumina as defined above, and to a related process for synthesizing and device. 10 FIGURE:1</p> |
