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Corrosion of Valve Steels in Combustion Gases of Diesel Engines under Thermal Shock Conditions

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Abstract:

The corrosion behavior of four valve steels (X33CrNiMn23-8, X50CrMnNiNbN21-9, X53CrMnNiN20-8 and X55CrMnNiN20-8) in combustion gases of fuel oil, containing different bio-component concentrations of (5 and 10 wt. %) has been studied under thermal shock conditions. It has been found that the addition of bio-components to the fuel oil decreases the corrosion resistance of all steels under investigation, this effect being the stronger, the higher was the concentration of bio-component addition. It has been shown, that in spite of bio-component addition, the X33CrNiMn23-8 steel containing the highest chromium concentration, behaved much better than three remaining steels due to the formation of the highly protective chromia scale.

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Periodical:

Defect and Diffusion Forum (Volumes 323-325)

Pages:

327-332

DOI:

https://doi.org/10.4028/www.scientific.net/DDF.323-325.327

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Online since:

April 2012

Authors:

Zbigniew Grzesik, Krzysztof Adamaszek, Zbigniew Jurasz, S. Mrowec

Keywords:

Combustion Gases, Corrosion, Thermal Shocks, Valve Steels

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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