Elaborating a high performance and thermostable LED lighting source based on YAG:Ce ceramic photo-convertor is mainstream for outdoor lighting. However, it still suffers from narrow luminous angle using traditional molding method. In this paper, high quality YAG:Ce tubular ceramic was prepared using a low pressure injection molding (LPIM) and vacuum sintering. The results showed the viscosity of suspension with 75.0 wt.% solid content was as low as 190.34 Pa·s at the shear rate of 100 s⁻¹, and the molding pressure and holding time were adopted to be 0.8 MPa and 8 s, respectively. Impressively, the final YAG:Ce ceramic (double polished to 1.0 mm) with relatively high in-line transmittance of 72.5 % was produced. Furthermore, constructing the YAG:Ce ceramic tube with the hexahedral ‘‘columnar blue chip arrays’’, a 4π white light emission with a luminous efficiency of 126.46 lm/W and low correlated-color temperature of 4333 K and was attained.

基于YAG：Ce陶瓷光电转换器的高性能和热稳定性LED光源是户外照明的主流。然而，使用传统的模制方法，它仍然遭受狭窄的发光角度的困扰。在本文中，使用低压注射成型（LPIM）和真空烧结制备了高质量的YAG：Ce管状陶瓷。结果表明，在剪切速率为100 s ^-1时，固含量为75.0 wt。％的悬浮液的粘度低至190.34 Pa·s。，成型压力和保持时间分别为0.8MPa和8s。令人印象深刻的是，最终的YAG：Ce陶瓷（两次抛光至1.0 mm）具有相对较高的在线透射率72.5％。此外，构建了具有六面体“柱状蓝芯片阵列”，发光效率为126.46 lm / W，相关色温低至4333 K的4π白光的YAG：Ce陶瓷管。