A study to enhance the mechanical durability of the MAO coating fabricated on the 7075 Al alloy for wear-related high temperature applications

Faiz Muhaffel, Murat Baydogan, Huseyin Cimenoglu*

*Bu çalışma için yazışmadan sorumlu yazar

Araştırma sonucu: ???type-name???Makalebilirkişi

16 Atıf (Scopus)

Özet

This work has been initiated with the aim of increasing the success of micro-arc oxidation coatings fabricated on aluminium alloys against degradation under sliding contact conditions at high temperatures. For this purpose, the 7075 Al alloy has been micro-arc oxidised in an aluminate-based electrolyte with or without the adding monoclinic ZrO2 particles. Microstructural analyses revealed that the coating synthesised in a ZrO2-added electrolyte consisted of a ZrO2 particles participated Al2O3-based outer layer and a monolithic Al2O3-based inner layer, which exhibited similar features with that of the synthesised in the ZrO2-free aluminate-based electrolyte. Moreover, the coating fabricated in the ZrO2-added electrolyte exhibited enhanced wear resistance during the dry sliding wear tests conducted at room temperature and had higher durability during the tests done at 300 °C. Since the examined coatings were worn by fatigue wear mechanism, their durability during high temperature wear tests was analysed by using the conventional stress-based fatigue approach. From the derived equations, the maximum contact pressures at which coatings can endure 106 contact cycles at 300 °C were estimated as 851 and 331 MPa for the coatings fabricated in the ZrO2-added and ZrO2-free aluminate-based electrolytes, respectively.

Orijinal dilİngilizce
Makale numarası126843
DergiSurface and Coatings Technology
Hacim409
DOI'lar
Yayın durumuYayınlandı - 15 Mar 2021

Bibliyografik not

Publisher Copyright:
© 2021 Elsevier B.V.

Finansman

Mr. F. Muhaffel would like to thank the Turkish Scientific and Technical Research Institute (TUBITAK) for his scholarship through the BIDEB Programme No. 2211-A. The authors want to express their gratitude to Dr. B. Derin for FactSage 7.3 software analyses.

FinansörlerFinansör numarası
TUBITAK2211-A
Turkish Scientific and Technical Research Institute

    Parmak izi

    A study to enhance the mechanical durability of the MAO coating fabricated on the 7075 Al alloy for wear-related high temperature applications' araştırma başlıklarına git. Birlikte benzersiz bir parmak izi oluştururlar.

    Alıntı Yap