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Codepositing elements by halide-activated pack cementation

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Abstract

The codeposition of two or more elements in a halide-activated cementation pack is inherently difficult because of large differences in the thermodynamic stabilities for their volatile halides. However, through a computer-assisted analysis of the pack equilibria, combinations of suitable master alloys and activator salts can be identified. The codeposition of chromium plus aluminum or chromium plus silicon by pack cementation has yielded diffusion coatings with excellent resistance to high-temperature oxidation and corrosion fora wide range of alloy substrates.

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Authors and Affiliations

  1. Ohio State University, Ohio, USA

    Robert Bianco M.Sc. (Ph.D. candidate at Ohio State and member of TMS), Mark A. Harper M.Sc. (Ph.D. candidate at Ohio State and member of TMS) & Robert A. Rapp Ph.D. (professor at Ohio State and member of TMS)

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  1. Robert Bianco M.Sc.
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  2. Mark A. Harper M.Sc.
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  3. Robert A. Rapp Ph.D.
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Bianco, R., Harper, M.A. & Rapp, R.A. Codepositing elements by halide-activated pack cementation. JOM 43, 68–73 (1991). https://doi.org/10.1007/BF03222724

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