纳米级TiO_2添加剂对Al_2O_3陶瓷微观结构与烧结性能的影响  

Effect of nanosized TiO_2 as additive on microstructure and sintering characteristic of Al_2O_3 ceramic

作　　者：李国华[1] 陈树江[1] 窦叔菊[1] 王树海 

机构地区：[1]鞍山科技大学化学工程学院,辽宁鞍山114044 [2]山东工业陶瓷技术研究院,山东淄博255045

出　　处：《鞍山科技大学学报》2006年第1期12-15,共4页Journal of Anshan University of Science and Technology

摘　　要：用微米级和纳米级两种不同的TiO2作为烧结助剂加入Al2O3陶瓷中,研究其对Al2O3陶瓷微观结构和烧结性能的影响。结果表明,纳米TiO2能更好的提高Al2O3陶瓷的烧结活性,降低烧结温度,Al2O3陶瓷在1 600℃以下就可致密烧结。另外,纳米TiO2的加入,对Al2O3陶瓷的微观结构也产生影响,加入纳米TiO2的试样其晶粒尺寸比加入微米TiO2的大,TiO2与Al2O3形成固溶体。The effect of TiO2 as additive on the microstructure and the sintering characteristic of Al2O3 ceramics was studied, Results indicated sintering characteristic of Al2O3 ceramics was advanced, and the temperature of sintering was decreased, as a result,Al2O3 ceramic can be densely sintered under 1 600 ℃. In addition, the microstrueture of Al2O3 ceramics can be influenced by addition of nanosized TiO2 which can grow up grain dimension of Al2O3 ceramics.

关 键 词：AL2O3陶瓷 纳米级TiO2 烧结性能 微观结构 

分 类 号：TQ174.758.1[化学工程—陶瓷工业]