温度冲击对不同阳极氧化温度SiC<sub>P</sub>/2A12 复合材料阳极氧化膜开裂行为的影响

王一博; 于美; 刘建华; 李松梅; 杨茗佳; 王永平; 王蕾

doi:10.13801/j.cnki.fhclxb.20151127.001

温度冲击对不同阳极氧化温度SiC_P/2A12 复合材料阳极氧化膜开裂行为的影响

doi: 10.13801/j.cnki.fhclxb.20151127.001

1.
北京航空航天大学材料科学与工程学院, 空天先进材料与服役教育部重点实验室, 北京 100083;
2.
北京星航机电装备有限公司, 北京 100074

基金项目: 国家自然科学基金（51271012）

详细信息

通讯作者:
刘建华,博士,教授,博士生导师,研究方向为金属材料腐蚀与防护。E-mail:liujh@buaa.edu.cn

中图分类号: TB331
计量
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- 被引次数: 0
出版历程
- 收稿日期: 2015-07-23
- 修回日期: 2015-09-29
- 刊出日期: 2016-08-15

Effect of temperature shock on cracking behaviors of anodic film on SiC_P/2A12 composites at different anodized temperatures

1.
Key Laboratory of Aerospace Materials and Performance, Ministry of Education, School of Materials Science and Engineering, Beihang University, Beijing 100083, China;
2.
Beijing Xinghang Electromechanical and Equipment Plant, Beijing 100074, China

摘要

摘要: 通过己二酸-硫酸工艺制备了SiC_P/A1合金（2A12）复合材料阳极氧化膜，研究了不同阳极氧化温度下（15~35 ℃）制备的SiC_P/2A12复合材料阳极氧化膜温度冲击后的开裂行为及耐蚀性能。采用FE-SEM对温度冲击前后SiC_P/2A12复合材料阳极氧化膜的微观形貌进行了分析，采用电化学阻抗谱（EIS）研究了冲击前后SiC_P/2A12复合材料阳极氧化膜的耐腐蚀性能。结果表明：温度冲击对不同阳极氧化温度制备的SiC_P/2A12复合材料阳极氧化膜影响程度不同，随着阳极氧化温度的升高，温度冲击后SiC_P/2A12复合材料阳极氧化膜的裂纹密度逐渐增加。阳极氧化温度为25 ℃时，温度冲击后SiC_P/2A12复合材料阳极氧化膜耐蚀性最好。SiC_P/2A12复合材料阳极氧化膜的耐温度冲击性能优于2A12铝合金氧化膜。
- 铝基复合材料 /
- SiC /
- 阳极氧化 /
- 温度冲击 /
- 耐蚀性
Abstract: Anodic film on SiC_P/Al alloy (2A12) composites was obtained by adipic-sulfuric acid process. The cracking behaviors and corrosion resistance of anodic film on SiC_P/2A12 composites which was obtained at different anodized temperature (15-35 ℃) were analyzed after temperature shock.The micro morphology of anodic film on SiC_P/2A12 composites was observed by using FE-SEM before and after temperature shock. Electrochemical impedance spectroscope (EIS) was used to study the corrosion resistance of anodic film on SiC_P/2A12 composites before and after shock. The results show that the effect of temperature shock on anodic film on SiC_P/2A12 composites obtained at different anodized temperatures was different.After treating by temperature shock, the crack density of anodic film on SiC_P/2A12 composites gradually increases with the anodizing temperature increasing. The corrosion resistance of anodic film on SiC_P/2A12 composites after temperature shock obtained at anodized temperature of 25 ℃ is best. The temperature shock resistance performance of anodic film on SiC_P/2A12 composites is superior to that of 2A12 aluminium alloy oxidation film.
- Al matrix composites /
- SiC /
- anodic oxidation /
- temperature shock /
- corrosion resistance