boundary lubrication

简明释义

边界润滑

英英释义

例句

1.During startup, boundary lubrication 边界润滑 is crucial to prevent metal-to-metal contact.

在启动过程中，边界润滑对防止金属间接触至关重要。

2.The performance of the engine can be significantly improved by optimizing boundary lubrication 边界润滑 conditions.

通过优化边界润滑条件，可以显著提高发动机的性能。

3.Many high-performance lubricants are designed specifically for boundary lubrication 边界润滑 applications.

许多高性能润滑剂专门针对边界润滑应用而设计。

4.In tribology, boundary lubrication 边界润滑 refers to a regime where the lubricant film is very thin.

在摩擦学中，边界润滑指的是润滑膜非常薄的状态。

5.In mechanical engineering, understanding boundary lubrication 边界润滑 is essential for reducing wear in moving parts.

在机械工程中，理解边界润滑是减少运动部件磨损的关键。

作文

In the realm of tribology, which is the study of friction, wear, and lubrication, the term boundary lubrication refers to a specific lubrication regime that occurs when the lubricant film thickness is comparable to the surface roughness of the interacting surfaces. This condition is critical in many mechanical systems where full fluid lubrication cannot be maintained due to various factors such as load, speed, and temperature. Understanding boundary lubrication is essential for engineers and designers who aim to enhance the performance and longevity of machinery. To better understand boundary lubrication, it is important to consider how it differs from other lubrication regimes, such as hydrodynamic and elastohydrodynamic lubrication. In hydrodynamic lubrication, a thick film of lubricant completely separates the surfaces, significantly reducing friction and wear. Conversely, during boundary lubrication, the surfaces come into direct contact at certain points, leading to higher friction and potential wear. This situation often arises in low-speed applications or when starting and stopping machinery, where the lubricant may not be able to form a complete film. The mechanisms involved in boundary lubrication are complex and depend on several factors, including the properties of the lubricant and the materials of the surfaces in contact. Additives in lubricants play a crucial role in enhancing the performance of boundary lubrication. These additives can form protective films on the surface, reducing direct contact between the surfaces and minimizing wear. Common additives include anti-wear agents, extreme pressure additives, and friction modifiers. One practical application of boundary lubrication can be found in automotive engines. During engine start-up, the oil pump may not deliver sufficient oil pressure immediately, resulting in a boundary lubrication condition until the oil circulation stabilizes. Engine designers must account for this scenario to ensure that components do not suffer excessive wear during these critical moments. Another example is found in the field of bearings, where boundary lubrication is often observed under high-load conditions or low speeds. The surfaces of the bearing may not be adequately separated by the lubricant, leading to a reliance on the tribological properties of the lubricant and any protective films that may form. Research in boundary lubrication continues to evolve, with scientists exploring new materials and lubricant formulations to improve performance. For instance, nanotechnology has opened new avenues for creating advanced lubricants that can perform better under boundary lubrication conditions by providing enhanced protective characteristics. In conclusion, boundary lubrication is a vital concept in the field of tribology that addresses the challenges of lubrication in various mechanical systems. By understanding the principles and mechanisms behind boundary lubrication, engineers can design more efficient and durable machines, ultimately leading to improved performance and reduced maintenance costs. As technology advances, the study of boundary lubrication will remain a key area of research, helping to drive innovations in lubrication technology and material science.

在摩擦学领域，即研究摩擦、磨损和润滑的学科中，短语边界润滑指的是一种特定的润滑状态，当润滑剂膜的厚度与接触表面的粗糙度相当时，就会发生这种情况。在许多机械系统中，由于负载、速度和温度等各种因素，无法维持完全的流体润滑，因此这一条件至关重要。理解边界润滑对于希望提高机械性能和使用寿命的工程师和设计师来说是必不可少的。为了更好地理解边界润滑，重要的是要考虑它与其他润滑状态（如流体动力润滑和弹性流体动力润滑）的区别。在流体动力润滑中，厚厚的润滑膜完全分隔了表面，从而显著降低了摩擦和磨损。相反，在边界润滑期间，表面在某些点上直接接触，导致较高的摩擦和潜在的磨损。这种情况通常发生在低速应用或机器启动和停止时，此时润滑剂可能无法形成完整的膜。涉及边界润滑的机制是复杂的，并且依赖于多个因素，包括润滑剂的性质和接触表面的材料。润滑剂中的添加剂在增强边界润滑性能方面发挥着关键作用。这些添加剂可以在表面上形成保护膜，减少表面之间的直接接触，最小化磨损。常见的添加剂包括抗磨剂、极压添加剂和摩擦改进剂。边界润滑的一个实际应用可以在汽车发动机中找到。在发动机启动时，油泵可能无法立即提供足够的油压，导致在油循环稳定之前出现边界润滑状态。发动机设计师必须考虑这种情况，以确保组件在这些关键时刻不会遭受过度磨损。另一个例子是在轴承领域，通常在高负载条件或低速下观察到边界润滑。轴承的表面可能未能通过润滑剂充分分隔，这导致对润滑剂的摩擦学特性和任何可能形成的保护膜的依赖。关于边界润滑的研究仍在不断发展，科学家们正在探索新的材料和润滑剂配方以改善性能。例如，纳米技术为创造能够在边界润滑条件下表现更好的先进润滑剂开辟了新的途径，提供了增强的保护特性。总之，边界润滑是摩擦学领域一个至关重要的概念，解决了各种机械系统中润滑的挑战。通过理解边界润滑背后的原理和机制，工程师可以设计出更高效、更耐用的机器，最终提升性能并降低维护成本。随着技术的进步，对边界润滑的研究将继续成为一个关键领域，推动润滑技术和材料科学的创新。