Low-temperature aluminizing influence on degradation of nimonic 80A surface: Microstructure, wear and high temperature oxidation behaviors

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dc.authoridDoleker, Kadir Mert/0000-0003-4057-6832
dc.authoridKORKMAZ, Mehmet Erdi/0000-0002-0481-6002
dc.contributor.authorErdogan, Azmi
dc.contributor.authorYener, Tuba
dc.contributor.authorDoleker, Kadir Mert
dc.contributor.authorKorkmaz, Mehmet Erdi
dc.contributor.authorGok, Mustafa Sabri
dc.date.accessioned2024-09-29T16:00:47Z
dc.date.available2024-09-29T16:00:47Z
dc.date.issued2021
dc.departmentKarabük Üniversitesien_US
dc.description.abstractNimonic 80A alloy has been subjected to aluminizing process to improve its high temperature oxidation and wear properties. Pack aluminizing process was carried out for 3 and 5 h at 650 and 700 degrees C temperatures without using a protective atmosphere. Aluminising treatment was carried out using metallic aluminium, ammonium chloride (NH4Cl) and alumina as a filler. The morphology and structure of aluminide layers was analysed by SEM-EDS. It was observed that there was a super bonding between matrix and coating layers which are smooth, dense and porosity free. Dominant phases of Ni2Al3 and Al80Cr20 were detected by XRD analysis. Layer thickness was measured from the surface to the matrix and changed from 20 to 70 mu m which was increased with increasing process duration and temperature. The matrix hardness is 400 HVN while the hardness of coating layer raised to 1025 HVN with the process time and temperature. Wear losses decreased with the increase in coating temperature and time in both high temperature and room temperature tests. After isothermal oxidation tests at 1000 degrees C up to 75 h, all aluminized samples consist of alumina scale while Nimonic 80A consist of Cr2O3 and TiO2 mixed oxides with high thickness. The increased aluminizing temperature and time provide better protection against high temperature oxidation.en_US
dc.identifier.doi10.1016/j.surfin.2021.101240
dc.identifier.issn2468-0230
dc.identifier.scopus2-s2.0-85108859784en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org/10.1016/j.surfin.2021.101240
dc.identifier.urihttps://hdl.handle.net/20.500.14619/5360
dc.identifier.volume25en_US
dc.identifier.wosWOS:000677858500001en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.relation.ispartofSurfaces and Interfacesen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectNimonic 80Aen_US
dc.subjectSuperalloyen_US
dc.subjectDry sliding wearen_US
dc.subjectOxidationen_US
dc.subjectHigh temperature, Intermetallicsen_US
dc.titleLow-temperature aluminizing influence on degradation of nimonic 80A surface: Microstructure, wear and high temperature oxidation behaviorsen_US
dc.typeArticleen_US

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