Porous Silicon Nitride Ceramics Prepared by Reduction-nitridation of Diatomite
In this paper, porous Si3N4 ceramics were fabricated by carbothermal reduction between carbon black and diatomite. Diatomite is a siliceous, sedimentary rock consisting principally of the fossilized skeletal remains of diatom, a unicellular aquatic plant related to the algae. The main ingredient of diatomite is the amorphous active silicon dioxide. The influence of diatomite particle size on the microstructure of sintering bodies was analyzed. XRD analysis demonstrated the formation of Si3N4 except for minor of glass phase. SEM analysis showed that the resultant porous β-Si3N4 ceramics occupied fine microstructure and uniform pore structure.
Porous silicon nitride ceramics Carbothermal reduction Diatomite
Yaohui Xue Yuan Lu Bo Wang Jianfeng Yang Weizhong Lu Jiqiang Gao
The School of Electronic and Information Engineering, Xian Jiaotong University, Xian 710049, China State Key Laboratory for Mechanical Behavior of Materials, Xian Jiaotong University, Xian 710049,
国际会议
10th International Symposium on Eco-Materials Processing and Design(第10届国际生态材料加工与设计研讨会)
西安
英文
753-756
2009-01-13（万方平台首次上网日期，不代表论文的发表时间）