摘要
SiC掺杂SiAlON可以制备出高性能的纳米复相陶瓷.该陶瓷的相对密度高、硬度大和断裂韧性好.为了研究SiC作为增强相对SiAlON陶瓷性能的影响及机理,通过改变SiC添加剂的含量,采用干压成型(35MPa、30s)以及超高温无压烧结技术(1600℃、1650℃、1700℃)制得陶瓷试样.使用电子天平、维氏硬度计、SEM对其相对密度、硬度、断裂韧性和显微组织结构进行分析,以便今后获得高硬度和断裂韧性的纳米复相陶瓷.
High-performance nanocomposite ceramic can be prepared by Si C doping Si Al ON,which has high relative density,good hardness and fracture toughness. In order to study the effects and methods of Si Al ON ceramic reinforced by Si C,specimens were fabricated by changing the content of Si C additive,using dry pressing（ 35 MPa,30 s） and ultra-high temperature pressure sintering（ 1 600 ℃,1 650 ℃,1 700 ℃）. The relative density,hardness,fracture toughness and microstructure of samples were analyzed by electronic scales,Vickers hardness tester,SEM（ Scanning electron microscope）,which can achieve high hardness and fracture toughness of nanocomposite ceramics in the future.
出处
《吉林化工学院学报》
CAS
2015年第11期120-124,共5页
Journal of Jilin Institute of Chemical Technology
基金
吉林化工学院校级科研基金项目
关键词
SIALON
SiC
干压成型
超高温无压烧结
显微结构
SiAlON
SiC
dry pressing
UHPS（ultra-high temperature pressureless sintering）
microstructure
