ABSTRACT The present work is concerned with the corrosion resistance of AA6061 aluminium alloys with tantalum films in hydrochloric acid- and chloride-containing solutions. The tantalum films were produced by magnetron sputtering at different sputtering times (50 and 120 min). The films’ morphologies were observed by metallographic microscope and scanning electron microscope with energy dispersion spectrum. It is shown in this paper that with longer sputtering time, the film’s thickness increased, but it became less dense. The corrosion behaviour was characterised by potentiodynamic polarisation, scanning electrochemical microscopy analysis and an immersion experiment. These investigations revealed that the corrosion resistance of AA6061 aluminium alloy in chloride ions medium and hydrochloric acid was significantly improved after deposition of a tantalum film. Specifically, samples deposited for 50 min exhibited the best corrosion resistance in hydrochloric acid, while samples deposited for 120 min showed best corrosion resistance in sodium chloride solution.

中文翻译：

---

钽膜对AA6061铝合金在含盐酸和含氯溶液中腐蚀行为的影响

摘要 目前的工作是关于 AA6061 铝合金在含盐酸和氯化物溶液中的钽薄膜的耐腐蚀性。钽薄膜是通过磁控溅射在不同的溅射时间（50 和 120 分钟）下产生的。用金相显微镜和扫描电子显微镜用能量色散谱观察薄膜的形貌。本文表明，随着溅射时间的延长，薄膜的厚度增加，但密度降低。腐蚀行为通过动电位极化、扫描电化学显微镜分析和浸泡实验表征。这些研究表明，AA6061铝合金在沉积钽膜后，在氯离子介质和盐酸中的耐腐蚀性能得到显着提高。具体而言，沉积 50 分钟的样品在盐酸中表现出最好的耐腐蚀性，而沉积 120 分钟的样品在氯化钠溶液中表现出最佳的耐腐蚀性。