In this study, bismuth titanate (Bi₄Ti₃O₁₂) templates were synthesized through the molten salt method in Na₂CO₃ and K₂CO₃ fluxes. The prepared Bi₄Ti₃O₁₂ templates possessed plate-like morphologies with lengths of 5–20 μm and widths of 0.5–1 μm. They can be used to improve the electrical properties of Bi_0.5 (Na_0.4K_0.1)TiO₃ lead-free ceramics by employing template grain growth method at different sintering temperatures (950–1150 °C). The effect of sintering temperature on the physical properties of the 0.9[Bi_0.5(Na_0.4K_0.1)TiO₃]-0.1[Bi₄Ti₃O₁₂] (BNKT-BT) ceramics was investigated and it was found that the degree of orientation of the synthesized ceramics increased along with the sintering temperature, and the highest values were achieved at 1050 ^οC. However, at 1150 ^οC, the values for both ceramics started to decrease due to the formation of the Bi₂Ti₂O₇ pyrochlore phase. The ceramics sintered at an optimum temperature of 1050 ^οC exhibited the best physical properties such as density (ρ), 6.0 g cm⁻³ (relative density 99.8% of the theoretical value); remanent polarization (P_r), 15.5 μC cm⁻²; coercive field (E_c), 24.5 Kv/cm; and highest dielectric constant (ε_max), 6080.

本研究采用熔融盐法在Na ₂ CO ₃和K ₂ CO ₃助熔剂中合成钛酸铋（Bi ₄ Ti ₃ O ₁₂）模板。制备的Bi ₄ Ti ₃ O ₁₂模板具有板状形态，长度为5–20μm，宽度为0.5–1μm。它们可用于改善Bi _0.5（Na _0.4 K _0.1）TiO ₃的电性能通过采用模板晶粒生长法在不同的烧结温度（950-1150°C）下实现无铅陶瓷。研究了烧结温度对0.9 [Bi _0.5（Na _0.4 K _0.1）TiO ₃ ] -0.1 [Bi ₄ Ti ₃ O ₁₂ ]（BNKT-BT）陶瓷物理性能的影响，发现其程度合成陶瓷的取向随烧结温度的增加而增加，最高值在1050 ^o C达到。但是，在1150 ^o C时，由于Bi ₂ Ti ₂ O ₇的形成，两种陶瓷的值开始下降。烧绿石相。在1050的最佳温度下烧结陶瓷^ο Ç表现出最佳的物理性质如密度（ρ），6.0克厘米^-3（相对密度为理论值的99.8％）; 剩余极化（P _r），15.5μCcm ^-2；矫顽场（E _c），24.5 Kv / cm; 和最高介电常数（ε_最大），6080。