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Comparison of fretting behaviour of electrodeposited Zn-Ni and Cd coatings

Abstract : Zn-Ni is a primary replacement candidate for cadmium in the aerospace industry. However, tribological behaviours of these coatings are not well understood, despite the importance in their applications. This study compares the fretting behaviour of Zn-Ni and cadmium coatings, a hard and a soft coating. As the mechanical properties are different, coatings were compared under similar contact stresses and normal loads. Under similar contact stresses, Zn-Ni wore severely due to gross slip in the contact at high displacement amplitude. For cadmium, wear occurred through ejection of the coating from the contact, which became more severe when the displacement amplitude increased. Under similar normal loads, Zn-Ni remained in the stick regime and there was minor wear in the contact.
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Submitted on : Thursday, August 30, 2018 - 1:38:14 PM
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Lisa Lee, Sylvie Descartes, Richard Chromik. Comparison of fretting behaviour of electrodeposited Zn-Ni and Cd coatings. Tribology International, Elsevier, 2018, 120, pp.535-546. ⟨10.1016/j.triboint.2018.01.021⟩. ⟨hal-01864686⟩



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