硅酸盐学报2011，Vol.39Issue(2)：246-250,5.
低温放电等离子烧结法制备氮化硅陶瓷
Low Temperature Sintering of Silicon Nitride Ceramics by Spark Plasma Sinteting Technique
摘要
Abstract
The α-Si3N4 matrix ceramics were prepared by spark plasma sintering using MgO-Al203 and MgO-AlPO4 as the sintering additives, respectively. The phase composition and microstructure of the samples were analyzed by X-ray diffraction and scanning electron microscope. The effects of sintering additives and sintering temperature on the relative density and mechanical properties of the samples were investigated. The results show that when 4％ (in mass, the same below) MgO-4％ A1203 were used as the sintering additives, the relative density and bending strength of the sample sintered at 1400 ℃ reach 81％ and 182 MPa, respectively, and the relative density and bending strength of the samples reduce with the increase of Al2O3 content in the sintering additive. When 4％MgO-16％AlPO4 were used as the sintering additives, the relative density and bending strength of the sample sintered at 1300 ℃reach 96％ and 366.5 MPa, respectively, and the relative density and bending strength of the samples increase with the rise of sintering temperature. It indicates that the MgO-AlPO4 as sintering additives play a significant role in the low temperature sintering of Si3N4 ceramics, and not only reduce the sintering temperature but also improve the mechanical property of the sintered Si3N4 ceramics.关键词
氮化硅/低温烧结/烧结助剂/放电等离子体烧结Key words
silicon nitride/ low temperature sintering/ sintering additive/ spark plasma sintering分类
化学化工引用本文复制引用
李家亮,牛金叶,陈斐..低温放电等离子烧结法制备氮化硅陶瓷[J].硅酸盐学报,2011,39(2):246-250,5.基金项目
中国高校基本科研业务费专项资金资助项目. （）
