| 摘要 |
<p>A novel, polycrystalline whitlockite ceramic in either pore-free or porous form, in particular, a polycrystalline ceramic which is translucent, isotropic and substantially pore-free, said ceramic comprising whitlockite containing within the crystal lattice thereof about 0.1 to 2.2 per cent by weight sulfite ion and having an average crystallite size in the approximate range 0.3 to 3 microns and a density greater than about 99 per cent of the theoretical density of .beta.-whitlockite, said ceramics being useful as biological implant materials. The preparation of said ceramics as well as related non-ceramic whitlockite are disclosed.</p> |
