Reaction assisted flash sintering of Al2O3YAG ceramic composites with eutectic composition

• DOI: 10.1016/j.ceramint.2019.03.196
• Publication Date: 2019-03-28T17:03:12Z
• Authors: Hui Zhang; Yiguang Wang; Jinling Liu; Xiang Xu; Liying Chen; Dianguang Liu
• Keywords: 02 engineering and technology; 0210 nano-technology

Abstract We report that the Al2O3 Y2O3 ceramic composites with eutectic composition can be flash sintered at 1250 °C under the applied electrical field of 550 V/cm in an extremely short time (30 s). The solid-state reactions between Al2O3 and Y2O3 facilitate the flash sintering process. The sintered Al2O3 YAG ceramic composites exhibit relatively high hardness and high fracture toughness. These results demonstrate the feasibility of employing the flash sintering technique to fabricate oxide ceramic composites.