| 摘要 |
1. A ceramic filter membrane comprising at least mainly grains of sintered alumina, which are fixed to one another by "bonded" portions of the grain surfaces while leaving pores therebetween which are surrounded by the remaining "exposed" portions of the grain surfaces, characterized in that said exposed portions of the grain surfaces are covered by a layer of zirconia, which is continuous from one grain to another and has a thickness comprised between 10 and 1000 nanometers. |
