Abstract Providing lubrication at high temperature in the presence of oxygen is a significant technological challenge. We apply reactive molecular dynamics to study tribological properties of vanadium pentoxide, an active lubricious component of oxidation-resistant hard coatings. We explore sliding on V2O5 in a wide range of conditions and note its tendency to melt in sliding conditions at elevated temperatures and/or pressures. We observe a stick-slip-like collective mechanism of sliding in crystalline V2O5 at room temperature, that requires further exploration from theoretical prospective. We find that even a single layer of V2O5 on the surface of the coating is an effective lubricant at high temperatures, which is a vital piece of information for coating design.

中文翻译：

---

通过反应分子动力学模拟研究 V2O5 的摩擦学特性

摘要 在氧气存在的情况下在高温下提供润滑是一项重大的技术挑战。我们应用反应分子动力学来研究五氧化二钒的摩擦学特性，五氧化二钒是抗氧化硬涂层的一种活性润滑成分。我们探索了在各种条件下在 V2O5 上的滑动，并注意到它在高温和/或压力的滑动条件下熔化的趋势。我们在室温下观察到晶体 V2O5 中一种类似粘滑的集体滑动机制，这需要从理论角度进一步探索。我们发现，即使是涂层表面的单层 V2O5 在高温下也是一种有效的润滑剂，这是涂层设计的重要信息。