| 摘要 |
PCT No. PCT/AT89/00069 Sec. 371 Date Apr. 5, 1990 Sec. 102(e) Date Apr. 5, 1990 PCT Filed Aug. 3, 1989 PCT Pub. No. WO90/01460 PCT Pub. Date Feb. 22, 1990.A magnesium oxide in fine powder form, which can be used to manufacture high-density ceramics, has an MgO content greater than 95 wt. %, preferably greater than 98 wt. %, a particle size less than 15 mu m, and a BET specific surface area less than 20 m2/g. The statistical mean of the particle shape factor of the primary particles lies between 1 and 1.5. The particles are coated with a hydrophobic, surface-active substance. |
