Abstract
The sliding fretting wear of mild steel fin specimens rubbing on stainless steel flats was investigated in carbon-dioxide-based atmospheres. The effect of increasing temperature was to produce a gradual fall in specific wear rate between about 60 and about 200 °C and an abrupt transition to a much lower value between about 200 and 230 °C. The exact temperature of the transition was influenced by other parameters. At a temperature of 220 °C the effect of increasing frequency (from 50 to 250 Hz) and/or increasing stroke (from 40 to 250 μm) was to increase the specific wear rate. This effect was strongest at the higher frequency-amplitude combinations. The effect of increasing sliding distances between about 1 and about 12 km on the specific wear rate was slight at the higher strokes but produced a reduction at the lower strokes. This reduction could be explained by a transition early in a test from a very high to a much lower wear rate. A further lowering influence on the specific wear rate was the presence of carbon monoxide, moisture, methane and hydrogen in the carbon dioxide. Low wear rate specimens had a smooth “glaze”-type oxide surface, whereas the high wear rates were associated with rough metallic surfaces.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call