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Study shows enhanced compressive strength and reduced friction in epoxy composites filled with WSe2, implying better performance in railway applications.
The hardness, strength, and tribotechnical characteristics of a solid lubricant composite material based on the modified epoxy resin K-153A, filled with WSe2 particles in an amount up to 70% (wt.) have been studied. It is shown that the compound modified with ~20% (wt.) WSe2 has the best set of properties: hardness ~79 HR (on the L scale), compressive strength ~155 MPa, compressive yield strength ~90 MPa, wear rate under sliding friction conditions ~0.18·10-8 mm3 / N∙m, friction coefficient ~0.2. The material can be recommended for rotaprint application on railway vehicles’ wheel flanges.
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Lobova et al. (2022) studied this question.
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