摘要
在高温有水氧化应力冲刷苛刻环境下,对SiC涂层C/C复合材料喷嘴开展了多种温度(630—1 200℃)、多种持续时间(10—60 s)的热震试验。结果表明:复合材料喷嘴共经受了50次热震,寿命为数十分钟;单次高温持续时间对复合材料喷嘴的寿命影响不大,而多次热震及应力冲刷是复合材料喷嘴破坏的主要因素;复合材料喷嘴的破坏是缓慢发生的,该材料是安全的。
In watery oxidation stress erosion environment,C /C composites with SiC coating nozzles were experimented under different temperature（630—1 200 ℃） and duration（10—60 s）. The results show that the C /C composite nozzle can endure fifty temperature shock,which life is dozens of minutes,and the high temperature duration have no obvious effects on the life,but repeatedly thermal shock and stress erosion are the primary cause to make the nozzle destroy,and the destruction is developed slowly,so the material is safe.
出处
《材料开发与应用》
CAS
2014年第4期59-63,共5页
Development and Application of Materials
关键词
C
C复合材料
SIC涂层
有水氧化应力冲刷环境
热震
C/C composites
SiC coating
watery oxidation stress erosion environment
thermal shock
