GJR2394100R1210 81AA03 ABB总线耦合器模块

　　个典型的摩擦学系统包括四个组成部分；两个接触面，环境和润滑——两个接触面之间的介质。这个星座被称为系统结构。

　　摩擦系统还包括作用在系统结构上的集体应力（载荷、速度和温度）。系统结构元素之间的相互作用会导致摩擦和磨损。

　　摩擦学系统可能非常复杂。相对速度的范围可以从每秒 0.001 到几米，即三到四个数量级。运动类型也可以改变——它可以是连续旋转、振荡或线性往复运动。对于负载，可以观察到类似的变化。温度范围可以从远低于冰点到非常高。

　　每个表面使用的材料种类繁多。

　　在干滑动条件下，基于聚合物的滑动材料可以在称为转移膜的金属反表面上形成一层薄的保护膜。复合材料表面也在滑动过程中被改性——这种改性层被称为滑动膜。

　　滑动膜是聚合物顶表面积的变化。这可能是表面或体积化学的变化、微观结构的变化、机械性能的变化或这些的任何组合。

　　转移膜是将材料从表面直接转移到另一个表面。

　　转移膜非常薄，但在干滑动情况下却极为重要，因为它是一层保护层，可遮盖反面，减少表面相互作用并控制磨损和摩擦。好的转印膜应该薄且一致。

　　这些原则为 GGB 一系列材料的开发提供了依据，包括匹配聚合物、金属聚合物、纤维增强复合材料和涂层表面。我们的目标是能够在各种情况下控制转移膜的形成，以更好地防止磨损和摩擦。

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　　A typical tribological system includes four components; two contacting surfaces, the environment and the lubrication - the medium between the two surfaces in contact. This constellation is known as the system structure.

　　The tribological system also comprises the collective stress (load, speed and temperature) that acts on the system structure. Interactions among the system structure elements cause friction and wear.

　　A tribological system can be very complex. The relative speed can range from 0.001 to several meters per second – that is, three to four orders of magnitude. The motion type can also change – it could be continuous rotation, oscillation or linear reciprocation. A similar variety can be observed for the loads. The temperature can range from well below freezing to very high.

　　There is a huge variety of materials that are used for each surface.

　　In dry sliding conditions, polymer-based sliding materials can form a thin, protective film on the metallic counter surface known as a transfer film. The composite surface is also modified during the sliding process – this modified layer is known as the sliding film.

　　The sliding film is a change of the top surface areas of the polymer. This could be a change in surface or volume chemistry, a change in the microstructure, a change in mechanical properties or any combination of these.

　　The transfer film is the direct transfer of material from surface to the other surface.

　　The transfer film is very thin, but it is extremely important in a dry sliding scenario because it is a protective layer that masks the counter surface, reducing surface interactions and controlling wear and friction. A good transfer film should be thin and consistent.

　　These principles have informed the development of a range of GGB’s materials, including match polymers, metal polymers, fiber-reinforced composites and coated surfaces. Our goal is to be able to control the formation of the transfer film to our advantage in a wide variety of situations to better prevent wear and friction.