Since metallic glass thin films (MGTFs) are commonly used in the atmosphere of air, the study on the evolution of structure, morphology, and mechanical properties of MGTFs exposed to air is of great significance for the practical application of MGTFs. The oxide formation mechanisms are investigated by experimental and calculation methods in this work. The results indicated that the crystalline oxide NiNb₂O₆ can be formed when exposed to air. The crystal structure of the oxide is orthorhombic, and the lattice constants can be calculated as: a = 14.022, b = 5.675 and c = 5.015 nm. The oxide NiNb₂O₆ was initiated around the amorphous island-like boundary during natural aging. The island boundary of amorphous matrix can provide the formation condition of nucleation and growth for crystalline oxide. The averaged Young's modulus and hardness of NiNb₂O₆ oxide are much higher than that of the amorphous matrix based on the results of experiments and first-principle calculations, indicating that the presence of crystalline oxides might improve the wear-resistance performance of the films.

由于金属玻璃薄膜（MGTFs）常用于空气中，因此研究暴露在空气中的金属玻璃薄膜（MGTFs）的结构、形貌和力学性能的演变对MGTFs的实际应用具有重要意义。在这项工作中，通过实验和计算方法研究了氧化物的形成机制。结果表明，当暴露在空气中时，可以形成结晶氧化物NiNb ₂ O ₆。氧化物的晶体结构是正交的，晶格常数可以计算为：a  = 14.022，b  = 5.675 和c  = 5.015 nm。氧化物 NiNb ₂ O ₆在自然老化过程中围绕无定形岛状边界开始。非晶基体的岛边界可为结晶氧化物提供成核和生长的形成条件。根据实验结果和第一性原理计算，NiNb ₂ O ₆氧化物的平均杨氏模量和硬度远高于非晶基体，表明结晶氧化物的存在可能提高薄膜的耐磨性能.