| 摘要 |
<p>Perovskite structural mixed phase Ca, Sr, Ba, Cd, Pb metatitanates and/or metazirconates and/or Ca, Cr, Ba, Cd metastannates and/or Sr metahafnate, giving white or coloured pigments catalysts or ceramic dielectrics, are obtained by replacing all or part of the 4-valent metals by Sb2O5, or mixed Sb, V, Nc and/or Ta pentoxide and/or MoO3 and/or WO3 and oxides of less than 4-valent metals with a cation radius of 0.44-0.96 angstroms the statistical value of the guest-cations being about +4 (sum of added cations to sum of added oxygen ions about 1:2).</p> |
