摘要
利用放电等离子烧结技术(SPS)制备出相对密度、断裂韧性、弯曲强度分别为99.74%、19.73±0.4MPa·m1/2、1002±12MPa的40vol%Ti/Al2O3复合材料。SEM对复合材料表面形貌观察发现,Ti、Al2O3两相分布均匀,表面无明显气孔存在;断口的SEM和EDS表明,复合材料已形成网络导电结构;复合材料的HREM微观结构分析表明,Al2O3三角晶界处无其它杂质的偏聚,小颗粒的金属Ti富集在Al2O3的三角晶界结合处,界面结合紧密。
The relative density, fracture toughness and bending strength of 40vol%Ti/Al2O3 composite were separate 99.74%,19.73±0.4MPa·min, 1002±12MPa by spark plasma sintering. SEM and EDS indicated that Ti and Al2O3 equally distributed and pore wasn＇t in existence, and what＇s more, composite came into being network structure. HREM showed that didn＇t assemble other atoms, and Ti, however, enriched in Al2O3 triangle grain boundary reaching in the interface of Ti and Al2O3 compactly combined.
出处
《山东冶金》
CAS
2006年第1期44-45,共2页
Shandong Metallurgy
基金
山东省自然科学基金资助课题(2002F21)
