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Hot corrosion of an aligned co-based, TaC-Strengthened eutectic alloy

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Abstract

A study of morphology of simple oxidation and hot corrosion of the aligned Co-10 wt.% Cr-14 wt.% TaC alloy was performed at 900°C in still air. The morphology of simple oxidation was found to correlate well with previous results on similar alloys. Hot corrosion tests were performed by coating the samples with a thin layer of Na2SO4 and exposing them to still air at 900°C. A radically different morphology was found and extensively analyzed using optical microscopy and the electron microprobe. These results are then explained using a localized reduction model of hot corrosion.

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Authors and Affiliations

  1. Department of Materials Engineering, Rensselaer Polytechnic Institute, Troy, New York

    S. R. Shatynski & K. A. Dannemann

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  1. S. R. Shatynski
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  2. K. A. Dannemann
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Shatynski, S.R., Dannemann, K.A. Hot corrosion of an aligned co-based, TaC-Strengthened eutectic alloy. Oxid Met 14, 531 (1980). https://doi.org/10.1007/BF00603478

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