Contact fatigue behavior of α-Al PROOF 2 O -Ti(C,N) CVD coated WC-Co under dry and wet conditions

2020-12-022020-12-022020-11-070167-577Xhttp://hdl.handle.net/20.500.12272/4624The response to cycling contact fatigue load of a WC-6%Co carbide coated with a Ti(C,N)/α-Al2O3 CVD multilayer was investigated in dry and wet conditions. Imprints in dry conditions were characterized by small thin cracksformingacircumferenceatthemaximumradiioftheimprint.Thedamagedcoatingwastotallypresentin thefinalimprintofthedrytest.Wetindentationsshowcaseanareaintheimprintwherethe α-Al2O3 layerhas beenremovedthroughoutaringbutwaskeptatthecenteroftheindentation,suggestingthatthecoatingdamageundercyclingcontactloadinwetconditionsisdominatedbyα-Al2O3degradation,associatedwithafretting effectortangentialloadsacceleratingthefatigue-corrosionofthealuminalayer.application/pdfenginfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/4.0/Attribution-NonCommercial-NoDerivatives 4.0 InternacionalCVD coatingCemented carbideContact fatigueCrack propagationWearContact fatigue behavior of α-Al PROOF 2 O -Ti(C,N) CVD coated WC-Co under dry and wet conditionsinfo:eu-repo/semantics/articleSosa, D.A. ; Collado Ciprés, Verónica ; García, José Luis ; Dalibón Bähler, Eugenia Laura ; Escalada, Lisandro ; Roa, Joan Josep ; Soldera, F. ; Brühl, Sonia Patricia ; Llanes L. ; Simison, SilviaNo comercial con fines académicos