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- W2004247796 abstract "Laser melting tests were performed on an Ni70Cr30 substrate precoated with carbon. The microstructure of such a cemented material was accurately characterized: the surface alloy is constituted of submicrometre cellular eutectic structures (chromium carbides and γ solid solution). This structure offers a correct thermal stability. The wear tests, conducted with a pin-on-disk tribometer, showed an excellent tribologic behaviour for this material, as good as that obtained by carbide powder injection in superalloys. The high-temperature oxidation resistance was tested at 800°C in pure oxygen, and it was shown that the surface alloy develops, as the substrate Ni70Cr30, a Cr2O3 oxide scale which acts as an efficient barrier against the hot gas aggression. The wear behaviour of cemented then oxidized materials was characterized and compared with that of the substrate." @default.
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- W2004247796 date "1989-12-01" @default.
- W2004247796 modified "2023-09-30" @default.
- W2004247796 title "Laser melting of an NiCr alloy precoated with carbon: high-temperature oxidation and wear resistance" @default.
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- W2004247796 doi "https://doi.org/10.1016/0921-5093(89)90815-0" @default.
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