Preparation of Glass-alumina Functionally Gradient Materials by Rapid Prototyping Technology
A novel rapid prototyping manufacturing technology for glass-alumina functionally gradient materials (G-A FGMs) based on the quick solidification of wax was proposed.The feature of the technology came from its layer-by-layer fabrication of the wax-glass/alumina composite layer carved in accordance with the shape of each layer of the computer designed model and in situ casting of wax into the carved area.Removal of the wax in the G-A FGMs green body was investigated based on differential scanning calorimetry (DSC) analysis.Sintering properties of the G-A FGMs were discussed.Bending strength of the G-A FGMs was measured by a three-point flexural test.Microstructures of the prepared G-A FGMs were observed using environmental scanning electron microscope (ESEM) and the compositional distribution was determined according to energy dispersive spectrum (EDS).Samples were preliminarily and respectively held at 200℃ and 300℃ for a long time based on the DSC analysis.The range of the optimal sintering temperature is determined to be from 710℃ to 720℃ and the holding time is 30rain.With the increasing alumina content,the bending strength increases and the maximum bending strength is 67.5MPa.There is no delamination of the G-A FGMs via ESEM.Homogeneous distribution of the ingredient materials is confirmed through EDS.
Rapid prototyping manufacturing Glass-alumina functionally gradient materials Wax
Jiang Hong-tao Wang Xiu-feng Yu Cheng-long Shan Lian-juan Deng Shuang-shuang
School of Materials Science and Engineering,Shaanxi University of Science & Technology,Xian 710021,P.R.China
国际会议
The Fifth China International Conference on High-Performance Ceramics (第五届先进陶瓷国际研讨会(CICC-5))
长沙
英文
1828-1830
2007-05-10（万方平台首次上网日期，不代表论文的发表时间）