Influence of Alloying on the Nature of Passive Films and on Their Breakdown

这项资助探索了金属合金的钝化行为，应用非原位和原位测量技术来确定高钝化膜的性质和合金在提高这种膜的抗降解能力方面的作用。现场实验应用于受击穿的被动层。确定了氢的作用、钝化层的结构以及合金元素对钝化层行为的影响。本研究采用了先进的x射线技术，包括掠入射x射线衍射和扩展x射线吸收精细结构（EXAFS）反射率作为入射光子能量和角度的函数。

This grant explores passivation behavior in metal alloys, applying ex-situ and in-situ measuring techniques to determine the nature of highly passive films and the role of alloying in improving the resistance of such films to degradation. In-situ experiments are applied to passive layers undergoing breakdown. The role of hydrogen, the structure of the passive layer, and effects of alloying elements on passive layer behavior are determined. Sophisticated X-ray techniques are employed in this research, including grazing incidence X-ray diffraction and extended X-ray absorption fine structure (EXAFS) reflectivity as a function of incident photon energy and angle.