氧化铝膜的破裂行为
来源期刊：中国有色金属学报2000年第3期
论文作者：辛丽 李美栓 钱余海 李铁藩
文章页码：326 - 329
关键词：声发射； Fe-Cr-Al合金； 离子注入钇； 氧化
Key words：acoustic emission； Fe-Cr-Al alloy； yttrium implantation； oxidation
摘 要：用声发射技术研究了Fe-23Cr-5Al-0.21Ti合金在1100℃空气中氧化后的氧化膜破裂行为及离子注入1×1017Y+/cm2对氧化膜破裂行为的影响。实验结果表明：随着氧化时间的增长， Fe-23Cr-5Al-0.21Ti合金在冷却过程中氧化膜开始发生破裂的时间相同，表明氧化膜发生破裂的临界应力相同，但声发射累积计数增加， 表明膜破裂程度加重。 离子注入Y+后氧化膜发生破裂的时间延迟，表明膜发生破裂的临界应力增大，且声发射计数减少，表明膜破裂程度减小，氧化膜粘附性得到显著提高。
Abstract: The cracking and spalling behavior of oxide scale formed on Fe-23Cr-5Al-0.21Ti alloy at 1100℃ in air and the effect of 1×1017Y+/cm2 implantation were studied using acoustic emission technique (AE). The results show that, with increasing oxidation time, the initial time when oxide scale suffered from cracking and spalling is same, indicating that the critical cracking stress of oxide scale on Fe-23Cr-5Al-0.21Ti is not changed, but the cumulative AE events increased, referring that cracking and spalling is more serious. The initial time of oxide scale suffered from cracking and spalling is delayed and the cumulative AE events is decreased by yttrium ion implantation, indicating that the critical cracking stress of oxide scale is increased and scale is more resistant to fracture.
