TRANSACTIONS OF THE KRYLOV STATE RESEARCH CENTRE

Science journal

 
ISSN (print) 2542-2324 /(online) 2618-8244


Articles of The Transactions of KSRC








Results of investigations into high-temperature oxidation and salt corrosion of turbine blade materials conducted by Krylov State Research Centre from 2009 to 2017



Full text article ( in russian)

Year

 
2018

Issue

 
385

Volume

 
3

Pages

 
97-106

Caption

 
Results of investigations into high-temperature oxidation and salt corrosion of turbine blade materials conducted by Krylov State Research Centre from 2009 to 2017

Authors

 
Bagerman А.Z., Arseniev Yu.N., Leonova I.P., Rakhmanov V.А.

Keywords

 
gas turbine engine, heatproof alloy, corrosion resistance of alloy, weight loss rate.

DOI

 
10.24937/2542-2324-2018-3-385-97-106

Summary

 
Object and purpose of research.Heatproof materials used primarily in marine gas turbines are studied. The purpose is to derive relationships between the rate of material deterioration and various factors such as temperature and salt load.
Subject matter and methodsThe data obtained from tests of heatproof alloys on gas dynamic test facility of Krylov State Research Centre were used as inputs for the investigations. The rate of weight loss was assessed by the gravimetric method.
Main results.It is found that heatproof materials and titanium alloys show similar behavior in corrosive environment. The salt load influences the rate of weight loss, while the surface layer of materials influences the corrosion process. Also, specific behavior of heatproof materials at temperatures above 900 °С has been identified.
Conclusion.The results obtained in these studies make it possible to assess the corrosion resistance of heatproof materials and find out if there is a need for application of protective coating in given service conditions. The temperature range is limited to 700–900 °С in connection with some special salt corrosion effects at temperatures over 900 °С, which have been identified during the study and call for more detailed investigations into that phenomenon.

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ISSN (print) 2542-2324 / ISSN (online) 2618-8244

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