【摘要】 用热压烧结方法制得致密的SiCw／SiO2、Si3N4w/SiO2复合材料，研究了材料的热膨胀、抗热震、抗烧蚀等性能，探讨了品须补强增韧熔石英材料用于航天防热材料的可行性．更多还原

【Abstract】 High density SiCw/SiO2 and Si3N4w/SiO2 composrites are successfully fabricated using normal hot pressing method, the thermal expanrion characteristies, thermal shock resistance and burning-erosion reistance of composites are studied, and the use of the comporites as thermal Uarrier material for aerospace programs is discusseel.更多还原