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The oxidation of cobalt-chromium-titanium alloys at 1000°C

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Abstract

Cobalt-based alloys containing 3,5,10,15, and 20% Cr with 1 and 3% Ti were oxidized at 1000°C in slowly flowing oxygen gas. In general, titanium additions decreased the oxidation rate with the most pronounced effect being observed at the 10% Cr level. Titanium accelerated the formation of Cr2O3 layers at the metal-oxide interface. Faceted CrxTiyOz spinel particles were found at the metal-oxide interface which varied in composition according to microprobe results. There was no evidence of spalling on the Co-Cr-Ti alloys studied in contrast to the severe spalling normally encountered in Ni-Cr-Ti alloys. Distinct morphological differences existed on the outer CoO layer of the 1% Ti alloys in comparison to the O and 3% Ti alloys.

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Authors and Affiliations

  1. Metallurgy Program, The Pennsylvania State University, University Park, Pennsylvania

    G. P. Wagner & G. Simkovich

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  1. G. P. Wagner
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  2. G. Simkovich
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Wagner, G.P., Simkovich, G. The oxidation of cobalt-chromium-titanium alloys at 1000°C. Oxid Met 26, 139–155 (1986). https://doi.org/10.1007/BF00664278

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  • DOI: https://doi.org/10.1007/BF00664278

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