Fabrication of SiC Dense-porous Laminates by Electrophoretic Deposition Process

摘要：

　　In order to obtain dense-porous laminated structure in green bodies of SiC ceramics,rapid aqueous electrophoretic deposition (EPD) was introduced.The suspension for the electrophoretic deposition was prepared using silicon carbide,silicon and carbon powders as the starting materials.During the electrophoretic deposition process,the intending dense and porous layers were deposited alternately to form the green body.After drying,the green bodies were reaction-bonded at 1550℃ in vacuum atmosphere.Pore fraction of the porous layers could be adjusted by changing process preferences of EPD and suspension composition.Pore size and size distribution could be controlled by using different sized starting powders.Using this process,no additional substance is necessary to generate the pores via burnt-off,and the dense/porous laminated structure can be obtained by one-step sintering process.

关键词： Laminated ceramics Porous interlayer Electrophoretic deposition Silicon carbide

作者: Yuan Li Jiqiang Gao Jianfeng Yang Hongjie Wang Guanjun Qiao

作者单位: State key laboratory for mechanical behavior of materials,Xian 710049,P.R.C

会议类型: 国际会议

会议名称: The Fifth China International Conference on High-Performance Ceramics (第五届先进陶瓷国际研讨会(CICC-5))

会议地点: 长沙

会议语种:英文

页码: 1841-1843

在线出版日期: 2007-05-10（万方平台首次上网日期，不代表论文的发表时间）