微波烧结偏铝酸锂陶瓷的可行性研究  

Feasibility research on microwave sintering of lithium aluminate

作　　者：姜作中[1] 白新德[1] 凌云汉[1] 林伟[1] 谢志鹏[1] 马文军[1] 任永刚[1] 

机构地区：[1]清华大学材料科学与工程系,北京100084

出　　处：《核技术》2003年第12期956-960,共5页Nuclear Techniques

摘　　要：偏铝酸锂(γ-LiAlO_2)陶瓷,具有良好的热稳定性、化学稳定性、辐照稳定性和机械强度,以及与其他材料的广泛相容性。采用了微波烧结γ-LiAlO_2陶瓷,避免了试件出现裂纹与变形,实现了快速烧结,并得到了传统电炉烧结无法比拟的优异的力学和物理性能,如抗压强度、气孔率以及晶粒尺寸。这为以后高效高质生产偏铝酸锂陶瓷提供了新的途径。Gamma lithium aluminate, γ-LiAlO2, is a potential candidate for MCFC matrix and tritium breeding material. Lithium aluminate pellets and pipes with thin walls were sintered with 2.45 GHz microwave applicator. It was shown that lithium aluminate ceramic was suitable to heating with microwave energy and to using lower sintering temperature and short heating time compared with conventional method. And above all special requirements on the material properties, such as ultimate compressive strength (C.S.), narrow porosity distribution and homogeneous grain size were achieved. This provides a bright future for fast and high quality sintering of lithium aluminate.

关 键 词：偏铝酸锂陶瓷 微波烧结 燃料电池 可行性研究 热稳定性 化学稳定性 辐照稳定性 机械强度 

分 类 号：TQ174.65[化学工程—陶瓷工业] TM911.4[化学工程—硅酸盐工业]