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Premium A novel spinel coating on cobalt‐based Superalloy GH605 via an in‐situ oxidation approach
Zhang Kai,
Liu Jinglei,
Bao Binbin,
Xu Hong
Publication year2018
Publication title
surface and interface analysis
Resource typeJournals
Cr‐Mn‐O spinel coating was prepared on the surface of cobalt‐based superalloy GH605 via an in‐situ oxidation method in H 2 O‐H 2 environment. The composition, morphology, and chemical value state of the oxide spinel coatings were investigated by SEM, EDS, XRD, Raman spectra, and XPS. It indicated that the morphology of coating varied with oxidation temperature, and granular surface appeared when oxidation temperature increased to 1100°C. The formed Cr‐Mn‐O spinel coating was composed of Cr 2 O 3 and MnCr 2 O 4 , and the thickness increased significantly with oxidation temperature. In the coating, Cr element existed in the state of Cr 3+ ions and Cr 6+ ions, while Mn element only existed in the form of Mn 2+ ions.
Subject(s)alloy , chemistry , coating , cobalt , composite material , in situ , materials science , metallurgy , organic chemistry , spinel , superalloy
SCImago Journal Rank0.52

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