O'-Sialon-ZrO<sub>2</sub>-SiC复合材料的合成热力学分析及其制备

O'-Sialon-ZrO₂-SiC复合材料的合成热力学分析及其制备

摘要: 在分析、绘制Si-O-N三维立体参数状态图基础上,采用纯原料合成了O'-Sialon-ZrO₂-SiC复合材料.对实验结果用XRD、TEM进行分析,验证热力学分析的可靠性.结果表明,O'-Sia-lon-ZrO₂-SiC复合材料中,主晶相O'-Sialon彼此之间构成网络状结构,ZrO₂和SiC颗粒弥散于编织状结构的孔隙中,起强化作用

Abstract: On the basis of thermodynamic analysis, O'-Sialon-ZrO₂-SiC composites were prepared. XRD and TEM were used to analyze experimental results,verify the thermodynamical calculation. The study on microstructure showed that the main crystalline phase is O'-Sialon which forms an interwoven structure and the interwoven structure is strengthen by ZrO₂ and SiC for O'-Sialon-ZrO₂-SiC composites.