Influence of Titanium Sol on the Sintering Behaviour, Microstructure and Properties of Al2O3-SiO2 Ceramic Cores

摘要：

　　A series of Al2O3-SiO2 ceramic cores with titanium sol sintered at 1350,1450,1500 and 1550℃for 2h,respectively,were prepared,and the phase and microstructure were characterized by X-ray Diffraction and Scanning Electron Microscopy.The influence of titanium sol on the phase transformation,shrinkage rate and flexural strength at room temperature has been investigated.The mullite phase formation temperature decreased by at least 150℃with the addition of 1wt% to 5wt% TiO2.Additionally,the titania additive promoted the combination of Al2O3 and SiO2,producing mullite phase which reduced the shrinkage and improved the flexural strength.

关键词： Ceramic core Al2O3-SiO2 Titanium sol Phase transformation Shrinkage Flexural strength

作者: Jun Chen Yue Zhang

作者单位: School of Materials Science and Engineering, Beihang University, Beijing 100191, China

会议类型: 国际会议

会议名称: the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))

会议地点: 太原

会议语种:英文

页码: 507-511

在线出版日期: 2012-07-13（万方平台首次上网日期，不代表论文的发表时间）