Microstructure and Luminance Properties of Integrated Translucent Alumina Tube Used in Metal Halide Lamps

摘要：

The integrated translucent alumina tube used in metal halide lamps have been fabricated by gelcasting process. The influence of sintering process,various sintering fluxes on the micro- structure was discussed. Furthermore,the relation between the luminance and the microstructure was also investigated. The results reveal that when the sintering temperature is 1750℃,the holding time is 6h,the compact product whose average grain size is about 20pm could be obtained; the triple dopant combinations of MgO,Y2O3,La2O3 can promote sintering and improve the microstructure more than double,single dopants and the contents of sintering flux are 99.6wt％Al2O3,0.2wt％Mg0,0.1wt.％Y2O3 and 0.1wt.％La2O3 respectively; The transmittance increases with the pore decreaseing,the grain size enlarging and the degree of the surface finish improving,the average in line transmittance is about 40％.

关键词： Translucent alumina ceramics Microstructure Luminance properties

作者: Liu Feng Zhiwei Chen Jinye Niu

作者单位: Analysis and Testing Center,Shandong University of Technology, Zibo 255049,China

会议类型: 国际会议

会议名称: Frist Annual Meeting on Testing and Evaluation of Inorganic Materials(第一届全国无机材料测试与评价学术年会)

会议地点: 南昌

会议语种:英文

页码: 272-276

在线出版日期: 2010-04-28（万方平台首次上网日期，不代表论文的发表时间）