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Wear Failures
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Wear may be defined as damage
to a solid surface caused by the removal or displacement of material by the
mechanical action of a contacting solid, liquid, or gas. It may cause
significant surface damage and the damage is usually thought of as gradual
deterioration. While the terminology of wear is unresolved, the following
categories are commonly used.
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Adhesive wear
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Abrasive wear
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Erosive wear
Adhesive wear has been
commonly identified by the terms galling, or seizing. Abrasive wear, or
abrasion, is caused by the displacement of material from a solid surface due to
hard particles or protuberances sliding along the surface. Erosion, or erosive
wear, is the loss of material from a solid surface due to relative motion in
contact with a fluid that contains solid particles. More than one
mechanism can be responsible for the wear observed on a particular part.
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