Optimization for Preparation of High Density Alumina Ceramics with Ultrafine-Grained Structure by a Fast Sintering Method
The preparation of ultrafine-grained alumina ceramics by the fast sintering technique Self-propagating High-temperature Synthesis plus Quick Pressing (SHS-QP) method was reported.The reaction heat generated by combustion reaction was applied to act as a high temperature source.An alumina compact was loaded inside the combustion reactants,which form a “SHS-furnace,and great mechanical pressure was applied when the temperature reached the maximum.Dense ultrafine-grained alumina ceramic was prepared using a lower heating rate (900 ℃/min),and the effects of sintering time,and pressure on the densification and grain size were discussed.Within a short sintering time of 3 min,full-density alumina ceramics with ultrafine-grained structure are obtained under a pressure of 120 MPa.
Alumina Heating rate Structure
Weijiu Huang Guisen Wu Fancheng Meng Feng Ye
Department of Materials,Chongqing University of Technology,Chongqing,400050,china Department of Materials,Chongqing University of Technology,Chongqing,400050,china;Keda industrial.Co
国际会议
桂林
英文
103-106
2012-07-16（万方平台首次上网日期，不代表论文的发表时间）