Abstract
The surface topology of the wear tracks of a nickel specimen mated against nickel in a simulated face seal test is characterized by scanning electron microscopy. The nominal face load was 0.024 N m −2, the sliding velocity was 0.975 m s −1, and the test duration was 64 s. Argon flowed across the mating interface, but the surface contact was so localized that the seal did not operate in a lubricated manner. The surface topology had a smeared, layered appearance with the presence of wedges and spalls. The mechanisms of wear in this test are similar to those seen in more controlled and lower speed tests for ductile materials mated against ductile materials. Temperature measurements indicate that local contact point temperatures reached magnitudes high enough to affect the mechanical properties of the nickel, and hence the wear response.
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