Asperities

microscopic projections on metal surfaces. Asperities result from normal finishing processes or from any other process or condition which changes the surface profile. Interference between opposing asperities in sliding or rolling wear is a source of friction, and can lead to metal welding and scoring. Ideally, the lubricating film between two moving surfaces should be thicker than the combined height of the opposing asperities.

« Back to Glossary Index

Dive straight into the feedback!
Login below and you can start commenting using your own user instantly