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Effect of chromium, aluminum, and titanium on the corrosion resistance of nickel in molten sodium sulfate and chloride

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Conclusions

  1. 1.

    On alloying nickel with chromium, resistance to sulfide corrosion increases, but with aluminum and titanium it is reduced. The maximum resistance in molten sodium sulfate is exhibited by nickel-chromium solid solutions containing more than 16–17% chromium, and the minimum is exhibited by intermetallics Ni3Al and Ni3Ti.

  2. 2.

    Alloying nickel with aluminum, titanium (up to 6–8%) and chromium (up to 10–12%) leads to an increase in its resistance to the action of molten sodium chloride. The intermetallic Ni3Al has the maximum resistance, and nickel-chromium solid solution with the limiting chromium content (36%) and Ni3Ti phases have the minium.

  3. 3.

    Binary Ni-Al, Ni-Ti, and ternary Ni-Al-Ti alloys have a lower corrosion resistance in sodium sulfate than in sodium chloride.

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Literature cited

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Authors
  1. I. V. Oryshich
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Additional information

Institute of Casting Problems, Academy of Sciences of the Ukrainian SSR, Kiev. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 3, pp. 42–46, March, 1985.

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Oryshich, I.V. Effect of chromium, aluminum, and titanium on the corrosion resistance of nickel in molten sodium sulfate and chloride. Met Sci Heat Treat 27, 218–222 (1985). https://doi.org/10.1007/BF00699657

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  • DOI: https://doi.org/10.1007/BF00699657

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