rubbing wear
Quick Summary
Rubbing wear is a type of wear that occurs when two materials slide against each other under load. This is distinct from impingement wear, where particles impact and erode a surface. Rubbing wear is a common phenomenon in mechanical systems such as rotating shafts, valve seats, and dies used in metal extrusion and drawing.1
The study of friction, wear, and lubrication is known as tribology. Wear itself is the removal of material from a solid surface due to mechanical action from another solid. This can lead to the deterioration of a mechanism's performance or even seizure if wear particles become lodged between closely fitted parts.234
Ceramics are often used to resist rubbing wear because they are typically very hard and strong due to strong chemical bonds. However, properties like elasticity, toughness, and thermal conductivity are also important. Some advanced ceramics, like transformation-toughened zirconia, are designed to become tougher and stronger under the stresses of wear, leading to enhanced service life.1
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