宇航材料工艺2011，Vol.41Issue(1)：71-74,79,5.
Cf/ZrB2-SiC复合材料的高温氧化行为及机理
Oxidation Resistance Behavior of Short Carbon Fiber Reinforced ZrB2,-SiC Composites
许春来 1石晓斌 1高栋 2宋扬 1张跃2
作者信息
- 1. 航天材料及工艺研究所,先进功能复合材料技术国防科技重点实验室,北京,100076
- 2. 北京航空航天大学材料科学与工程学院,北京,100191
- 折叠
摘要
Abstract
Different proportions of ZrB2 and SiC powders were mixed thoroughly and short carbon fibers with length of 2 cm were filled in, then the mixture was hot pressed into ceramic composites with ZrB2 and SiC. Zirconium diboride ceramics containing 18 vol％ SiC with high relative density of 96％ were prepared by hot pressing method at 1 850℃ . The oxidation tests were carried out under 1000℃ , 1 200℃ and 400℃ respectively under ambient atmosphere in order to clarify the oxidation resistance performance. It was found that borosilicate glass, ZrO2and SiO2 formed on the surface of samples, which acted as an effective oxidized layer preventing further oxidation. With the increase of oxidation temperature and oxidation holding time, the vitreous phase increased during oxidation process to enhance anti-oxidation property.关键词
ZrB2-SiC陶瓷基复合材料/碳纤维/抗氧化性能/氧化膜引用本文复制引用
许春来,石晓斌,高栋,宋扬,张跃..Cf/ZrB2-SiC复合材料的高温氧化行为及机理[J].宇航材料工艺,2011,41(1):71-74,79,5.
