Glijslijtage

Glijslijtage, also known as fretting wear or fretting corrosion, is a type of surface degradation that occurs when two surfaces in contact experience small, relative oscillatory motions. This movement, often imperceptible to the naked eye, causes repeated micro-displacements between the contacting asperities (tiny high points) of the surfaces.

The process typically begins with the adhesion between these asperities. As the surfaces slide back and forth, these adhesive junctions break and reform. In the presence of oxygen or other corrosive agents, the wear debris generated from this process can oxidize, forming hard, abrasive particles. These particles are then trapped between the surfaces, acting like a grinding paste and accelerating the wear process. This combination of mechanical wear and chemical oxidation is why it is often referred to as fretting corrosion.

Glijslijtage can manifest in various ways, including pitting, cracking, and material removal. It is a common problem in mechanical components subjected to vibration or cyclic loading, such as bearings, gears, splined shafts, and bolted connections. The detrimental effects can lead to premature failure of components, increased noise and vibration, and reduced service life.

Mitigation strategies for glijslijtage often involve reducing the relative motion between surfaces, using lubricants to minimize friction and prevent oxidation, or applying protective coatings to enhance surface durability. Selecting appropriate materials with good wear resistance is also crucial in preventing this type of damage.