Bridging asperity adhesive wear and macroscale material transfer

摘要

The adhesive processes of loose debris production and preferential transfer to a high surface energy counterface were modeled using an asperity contact based framework and statistical hypotheses about adhesion, average debris size, and the preferential load support by existing transfer film. Transfer film area fraction evolution of a well-studied ultralow wear polymer solid lubricant strongly supports the model's prediction of geometric growth. Further analyses suggest the model's strong predictability is mathematically independent of debris size, which is also in accordance with leading adhesive wear theories on the critical size of asperity junction and loose debris.

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