摘要
针对钛基复合材料高温应用中的关键问题——高温氧化性能,从理论和实验上研究了不同增强体(TiC、TiB)对钛基复合材料氧化性能和微观结构的影响。结果表明:钛基复合材料的氧化规律为抛物线规律,TiB增强体比TiC增强体更能提高复合材料的高温抗氧化性能,TiB/Ti基复合材料表面氧化膜的状态较TiC/Ti基的致密、均匀,高温氧化后,基体元素Ti和Al会与氧发生反应生成TiO2、Al2O3。
The key problem in high temperature application of titanium matrix composites is the oxidation resistance.The study is to investigate the oxidation kinetics and microstructure of particle-reinforced titanium matrix composites.The results show that the oxidation kinetics curves of titanium matrix composites follow the parabola law. Reinforcements TiB can more effectively improve the oxidation resistance of titanium matrix composites than reinforcements TiC. Reinforcements TiB can make the oxidation coat dense and uniform. There are following oxidation reactions such as TiO_2、Al_2O_3 after oxidation.
出处
《机械工程与自动化》
2004年第5期39-42,共4页
Mechanical Engineering & Automation
基金
国家自然科学基金资助项目(59631080)
关键词
钛基复合材料
微观结构
抗氧化性
titanium matrix composites
microstructure
oxidation resistance
