β′-Sialon的微波反应烧结  

β′-Sialon Prepared by Microwave Sintering Reaction

作　　者：邱雄迩[1] 潘伟[2] 周益春[1] 彭虎 谭丛兵[1] 

机构地区：[1]湘潭大学材料与光电物理学院,湘潭411105 [2]清华大学材料科学与工程系,北京100082 [3]长沙隆泰科技有限公司,长沙410013

出　　处：《湘潭大学自然科学学报》2007年第1期49-55,共7页Natural Science Journal of Xiangtan University

基　　金：国家自然科学基金资助项目(50232020)

摘　　要：利用Al粉、Si粉、Al2O3粉,根据微波加热特点,调整原料的配比,配合自制的工业微波高温烧结炉,选择合适的微波工艺合成了Z值等于3的β′-Sialon.研究了原料配比、炉气中氧含量、烧结温度以及保温时间等对产物性能的影响.结果表明:利用微波反应烧结β′-Sialon,原料配比和炉气中氧含量很关键;微波反应合成烧结Z值等于3的β′-Sia-lon的最佳工艺是1500℃、保温90 min,该工艺烧结的材料密度为3.050 g/cm3和室温抗弯强度为150 MPa.The studies show the microwave （MW,2.45GHZ） heating approach can be successfully applied to the preparation of β＇ - SiMon （ Z = 3） form the powder of aluminium,silicon and alumina, according to the advantage of microwave oven and proper sintering schedule. The effects of preparation condition on the characteristics of product, such as ratio of the materials, ambient, synthesis temperature and soaking time have been studied. The results show that the ambient oxygen and ratio of the materials are critical to microwave sintering reaction of β＇ - Sialon. When sintering at 1 500 ℃and soaking 90 min, the properties of sintered sialon are best whose density is near to 3.050 g/cm^3 and MOR of room temperature is 150 MPa.

关 键 词：陶瓷 微波反应烧结 β'-Silon 氮化 

分 类 号：TQ175.79[化学工程—硅酸盐工业]