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Composition and Morphology of Hot-Salt Corrosion in Heat-Resistant Nickel Alloys

  • CORROSION AND METAL PROTECTION
  • Published:
Inorganic Materials: Applied Research Aims and scope

Abstract

This article investigates the change in the structure of heat-resistant nickel alloys doped with cobalt, chromium, molybdenum, aluminum, niobium, tungsten, and titanium and aluminum, cobalt, rhenium, tantalum, ruthenium, molybdenum, tungsten, and chromium under the influence of a solution of 75%Na2SO4 + 25%NaCl in temperature range 600–750°C. As the results of the study show, a corrosive film of a layer structure based on oxides of chromium, aluminum, nickel and nickel sulfides is formed on the metal surface. It has been established that the nature of corrosion destruction of metal depends on the composition and content of alloying elements in it.

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Authors and Affiliations

  1. All-Russian Scientific Research Institute of Aviation Materials (VIAM), 105005, Moscow, Russia

    D. A. Movenko & A. B. Laptev

  2. UEC-Perm Engine, 614010, Perm, Russia

    O. A. Zagorskykh

Authors
  1. D. A. Movenko
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  2. A. B. Laptev
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  3. O. A. Zagorskykh
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Correspondence to D. A. Movenko.

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Translated by M. Drozdova

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Movenko, D.A., Laptev, A.B. & Zagorskykh, O.A. Composition and Morphology of Hot-Salt Corrosion in Heat-Resistant Nickel Alloys. Inorg. Mater. Appl. Res. 13, 1652–1657 (2022). https://doi.org/10.1134/S207511332206017X

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  • DOI: https://doi.org/10.1134/S207511332206017X

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