硅酸盐通报2018，Vol.37Issue(2)：430-435,6.
AlN-Pr2O3液相烧结SiC陶瓷
Liquid Phase Sintering of SiC with AlN-Pr2O3 Additives
摘要
Abstract
In present work,samples of SiC ceramic with AlN-Pr2O3 additives in different content (5wt％-20wt％) and different mole ratio (Pr2O3/AlN =1/3,1/1,3/1) were prepared by hot pressed (HP) and pressureless sintering at 1800-2000 ℃,and its performance were investigated.The results show that samples in group 1/3 can promote the densification of SiC ceramics more effectively.The maximal relative density of 1/3 group is 87％ by pressureless sintering,while the supreme relative density,hardness,flexure strength and fracture toughness are achieved by HP,as 96.1％,23.4 GPa,549.7 MPa,5.36 MPa · m1/2,respectively.Phenomenon of grain pull-out is observed in microstructure and the fracture mode is intergranular fracture.关键词
氮化铝/氧化镨/液相烧结/SiC陶瓷Key words
AlN/Pr2O3/liquid phase sintering/SiC ceramic分类
化学化工引用本文复制引用
潘文高,吴澜尔,江涌,黄振坤..AlN-Pr2O3液相烧结SiC陶瓷[J].硅酸盐通报,2018,37(2):430-435,6.基金项目
国家自然科学基金(NSFC51362001) （NSFC51362001）
北方民族大学高校重点引智项目(X2017006) （X2017006）
