微波烧结Al_2O_3/SiC纳米复合陶瓷的研究  

Study on Microwave Sintering of Al_2O_3/SiC Nanocomposite Ceramic

作　　者：王霞[1] 潘成松[1] 陈玉祥[1] 

机构地区：[1]西南石油大学材料学院,四川成都610500

出　　处：《材料开发与应用》2008年第2期14-17,共4页Development and Application of Materials

基　　金：教育部重点研究项目(206130);西南石油大学研究生创新基金(CXJJ27093)

摘　　要：以分析纯Al(NO3)3.9H2O·NH3.H2O和50 nm的SiC粉体为原料,采用溶胶-凝胶法制备干凝胶,经热处理合成Al2O3/SiC纳米复合粉体。利用微波烧结制备Al2O3/SiC纳米复合陶瓷,并与常规烧结比较,分析了两种烧结方法对制备试样的力学性能影响。结果表明,与常规烧结相比,微波烧结可以提高Al2O3/SiC纳米复合陶瓷的强度和韧性,改善材料的显微结构,促进致密化和晶粒生长。A dry gel was prepared from Al（NO3）3·9H2O, NH3·H2O and 50nm SiC powder via sol-gel technology. Al2O3/SiC nanocomposite ceramic was produced from the dry gel by means of microwave sintering. Compared with conventional sintered Al2O3/SiC nanocomposite ceramic, effects of two sintering methods on the Al2O3/SiC nanocomposite ceramics＂ mechanical properties were analyzed, The results indicated that the microwave processed Al2O3/SiC nanocomposire ceramic appears with improved density, fracture toughness and bending strength.

关 键 词：微波烧结 常规烧结 Al2O3/SiC纳米复合陶瓷 力学性能 

分 类 号：TQ174.758.11[化学工程—陶瓷工业]