| 摘要 |
<p>A dielectric ceramic composition for microwave applications, comprises compound of formula: B'B"2O6 (I) (where B' = metal selected from Mg, Co, Mn, Ni and Zn; and B" = Nb or Ta;) and contains 0.05-2 wt.% of an additive; preferably comprising one or more selected from: CuO, V2O5, La2O3, Sb2O5, WO3, MgO, SrCO3, ZnO and Bi2O3. Also claimed are dielectric ceramic compositions for microwave applications, the compositions containing 0.05-2 wt.% additive and a solid solution of B-Nb2O6 and B-Ta2O6 in any desired molar proportion, where B = (i) one or more of Mg, Co, Mn, Ni and Zn, (ii) Zn, (iii) Mg or (iv) at least Zn or Mg.</p> |
