精品文档---下载后可任意编辑Al/Si 原子在 Cu 基非晶中的扩散机制的开题报告摘要：金属玻璃相对于晶态金属具有更好的力学性能和耐腐蚀性能，已经在许多领域得到了广泛的应用，比如：工具制造、电子器件和航空航天等。其中，非晶合金的制备是实现金属玻璃化的关键技术之一。然而，在非晶合金中引入不同的原子会对其物理和化学性质产生重要的影响。Al/Si 原子在 Cu 基非晶中的扩散机制一直是讨论的热点问题之一。本文将介绍 Al/Si 原子在 Cu 基非晶中扩散的物理化学机制，并利用分子动力学模拟方法模拟了 Al/Si 原子在 Cu 基非晶中的扩散行为。讨论表明，Al/Si 原子在 Cu 基非晶中的扩散受到温度、化学成分、晶体缺陷和压力等因素的影响，其中主要机制包括交换和躁动机制。本文的讨论结果对于深化理解非晶合金的物理和化学性质具有重要意义。关键词：金属玻璃，非晶合金，扩散机制，分子动力学。Abstract：Metal glasses have better mechanical and corrosion resistance properties compared to crystalline metals and have been widely used in many fields, such as: tool manufacturing, electronic devices, and aerospace. Among them, the preparation of amorphous alloys is one of the key technologies for achieving metal glassification. However, introducing different atoms into amorphous alloys will have important effects on their physical and chemical properties.The diffusion mechanism of Al/Si atoms in Cu-based amorphous alloys has always been a hot topic of research. This paper will introduce the physical and chemical mechanism of Al/Si atom diffusion in Cu-based amorphous alloys, and use molecular dynamics simulation methods to simulate the diffusion behavior of Al/Si atoms in Cu-based amorphous alloys. The study shows that the diffusion of Al/Si atoms in Cu-based amorphous alloys is affected by temperature, chemical composition, crystal defects, and pressure, and the main mechanisms include exchange and agitation mechanisms. The results of this study are of great significance for a deeper understanding of the physical and chemical properties of amorphous alloys.Keywords: metal glass, amorphous alloy, diffusion mechanism, molecular dynamics.
