SiC-C/SiC复合材料的高温低周应力腐蚀机理与寿命预测

复合材料学报, 2004, 21(3): 44-48. doi: 10.3321/j.issn:1000-3851.2004.03.009

SiC-C/SiC复合材料的高温低周应力腐蚀机理与寿命预测

栾新刚 ^1, , 成来飞 ^2, , 张立同 ^3, , 魏玺 ^4,

1.西北工业大学,凝固技术国家重点实验室,西安,710072

2.西北工业大学,凝固技术国家重点实验室,西安,710072

3.西北工业大学,凝固技术国家重点实验室,西安,710072

4.西北工业大学,凝固技术国家重点实验室,西安,710072

基金项目: 国家自然科学基金(50072020)

关键词： SiC-C/SiC , 低频循环应力 , 应力氧化 , 应力腐蚀 , 寿命预测

CORROSION KINETIC AND LIFE PREDICTION EQUATION OF AN SiC-C/SiC COMPOSITE UNDER LOW FREQUENCY CYCLE STRESS AT HIGH TEMPERATURES

研究了SiC涂层连续碳纤维增韧的SiC基复合材料(SiC-C/SiC)在低频拉-拉循环应力下,干氧环境、水蒸气环境、湿氧环境以及含硫酸钠蒸气环境中,1000℃、1200℃和1300℃高温下的应力氧化与应力腐蚀情况.通过比较复合材料在相同循环应力条件下、不同温度和环境中的寿命,揭示了复合材料在高温、循环应力状态下的腐蚀机理.研究发现,在循环应力状态下,氧气是导致SiC-C/SiC复合材料寿命下降的主要因素.1000℃

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SiC-C/SiC复合材料的高温低周应力腐蚀机理与寿命预测

CORROSION KINETIC AND LIFE PREDICTION EQUATION OF AN SiC-C/SiC COMPOSITE UNDER LOW FREQUENCY CYCLE STRESS AT HIGH TEMPERATURES

参考文献