Potassium sodium niobate (KNN) is a potential candidate to replace lead zirconate titanate in sensor and actuator applications but there are many fundamental science and materials processing issues to be understood before it can be used commercially, including the influence of composition and processing atmosphere on the conduction mechanisms and functional properties. Consequently, KNN pellets with different K/Na ratios were sintered to 95% relative density in air and N₂ using a conventional mixed oxide route. Oxygen vacancies (V_O^••) played a major role in the semi-conduction mechanism in low p(O₂) for all compositions. Impedance spectroscopy and thermo-power data confirmed KNN to be n-type in low p(O₂) in contradiction to previous reports of p-type behaviour. The best piezoelectric properties were observed for air- rather than N₂-sintered samples with d₃₃ = 125 pC/N and k_p = 0.38 obtained for K_0.51Na_0.49NbO₃.

铌酸钠钾（KNN）在传感器和执行器应用中可能替代钛酸锆钛酸铅，但在将其商业化之前还存在许多基础科学和材料加工问题，包括成分和加工气氛对合金的影响。传导机制和功能特性。因此，使用常规的混合氧化物途径，将具有不同K / Na比的KNN粒料在空气和N ₂中烧结至相对密度为95％。氧空位（V _O ^••）在所有成分的低p（O ₂）的半导电机理中起着主要作用。阻抗谱和热功率数据证实KNN在低p下为n型（O ₂）与先前的p型行为报告相矛盾。对于空气而不是N ₂烧结的样品，观察到最佳的压电性能，其d ₃₃  = 125 pC / N， K _0.51 Na _0.49 NbO ₃获得的k _p = 0.38 。