摘要
ZrB2-SiC陶瓷材料在高温环境下发生氧化.介绍了复合材料在高温环境下氧化行为及复合材料组元变化规律;利用质量守恒方程及在固体区域内的体积守恒情况,推导出材料发生高温环境下各组分的体积分数随温度的变化规律;根据Eshelby等效夹杂理论,结合Arrhenius方程及细观力学理论研究了ZrB2-SiC陶瓷在高温环境下的氧化行为,预报了高温下复合材料的力学性能,给出了弹性模量与孔隙率随温度变化的规律.为进一步研究陶瓷材料高温环境下的力学行为提供依据.
ZrB2-SiC ceramic materials will be oxidized in high temperature.The high temperature oxidation behavior and variation-component of the composite materials were described.The main oxide products and the variation-component of the composite materials under high temperature were investigated combining with mass conservation equation and the solid volume conservation of solid phase.Based on the Eshelby equivalent inclusion theory,this article combines Arrhenius Equation and the Micro-mechanics Theory to study the oxidation behavior of ZrB2-SiC ceramics in the high temperature,forecast mechanical properties of composite materials in the high temperature,and give the rules of the elastic modulus and void ratio by variation of temperature,which will provide a basis for further research on the high temperature ceramic materials.
出处
《哈尔滨理工大学学报》
CAS
北大核心
2011年第1期25-29,共5页
Journal of Harbin University of Science and Technology
关键词
高温陶瓷
氧化
Eshelby等效理论
模量预报
high-temperature ceramics
high temperature oxidation
Eshelby equivalent inclusion theory
modulus prediction
