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High-temperature corrosive damage to superalloys during operation of blades of gas-turbine engines and power plants

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Abstract

The role of liquid nickel-sulfide eutectic in the mechanism of corrosive damage is determined by investigations of products of high-temperature oxidation and corrosion of superalloys with the use of scanning-electron microscopy and X-ray spectroscopic and X-ray structural analyses. It is found that the sulfide corrosion rate is controlled by the process of the dilution of the high-temperature nickel alloy within the liquid nickel-sulfide eutectic, diffusion of alloying constituents of the alloy in the liquid phase, and their subsequent oxidation.

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Authors and Affiliations

  1. Federal State Unitary Enterprise All-Russian Scientific Research Institute of Aviations Materials State Research Center of the Russian Federation, ul. Radio 17, Moscow, 105005, Russia

    M. R. Orlov

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  1. M. R. Orlov
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Correspondence to M. R. Orlov.

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Original Russian Text © M.R. Orlov, 2011, published in Vse Materialy. Entsiklopedicheskii Spravochnik, 2011, No. 12, pp. 32–37.

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Orlov, M.R. High-temperature corrosive damage to superalloys during operation of blades of gas-turbine engines and power plants. Polym. Sci. Ser. D 6, 250–255 (2013). https://doi.org/10.1134/S1995421213030180

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