This study aims at investigating tribological characteristics of zirconium-based bulk metallic glass (BMG) using nanoindentation and nanoscratch techniques. The nanomechanical properties of Zr₆₅Cu₁₅Al₁₀Ni₁₀ (at. %, Zr-based BMG) are first assessed via nanoindentation tests and simulations. The tribological performance of Zr-based BMG under various scratch conditions are investigated via nanoscratch tests with multiple ramp and constant normal loads. It is found that coefficient of friction (COF) irregularly increases with normal load due to the formation of fracture and chipping, which play crucial roles on the frictional behaviors of Zr-based BMG. The critical load for fracture and chipping formation is identified for the considered test conditions. Wear mechanism of Zr-based BMG under nanoscratching are investigated by observing the morphologies of scratch tracks through scanning electron microscope (SEM). The findings of this study can be beneficial for tailoring the surface of Zr-based BMG by using micro-machining and patterning techniques.

本研究旨在使用纳米压痕和纳米划痕技术研究锆基块状金属玻璃 (BMG) 的摩擦学特性。Zr ₆₅ Cu ₁₅ Al ₁₀ Ni ₁₀ (at.%, Zr-based BMG) 的纳米力学性能首先通过纳米压痕测试和模拟进行评估。通过多次斜坡和恒定的纳米划痕试验研究了 Zr 基 BMG 在各种划痕条件下的摩擦学性能正常负载。结果表明，由于断裂和碎屑的形成，摩擦系数（COF）随法向载荷不规则地增加，这对 Zr 基 BMG 的摩擦行为起着至关重要的作用。针对所考虑的测试条件确定断裂和碎屑形成的临界载荷。通过扫描电子显微镜（SEM）观察划痕形貌，研究了Zr基BMG在纳米划痕下的磨损机理。这项研究的结果有助于通过使用微加工和图案化技术定制 Zr 基 BMG 的表面。