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07465 Sulfidation/Oxidation Laboratory Tests to Relate to Industrial Conditions

Picture for 07465 Sulfidation/Oxidation Laboratory Tests to Relate to Industrial Conditions
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Product Number: 51300-07465-SG
ISBN: 07465 2007 CP
Author: Randy C. John
Publication Date: 2007
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$20.00
$20.00
The presentation discusses how alloy corrosion measured in laboratory testing can be related to industrial conditions, which induce sulfidation/oxidation. Formation of both sulfide and oxide corrosion products indicates that sulfidation/oxidation is the prevailing corrosion mechanism. We’ll review the goals of laboratory testing and show how industrial environments rich in H2-H2S-H2O gases can be simulated in laboratory tests using CO-COS-CO2 gases. The important variables, which determine the corrosivity of the exposure conditions, are reviewed and a method, which uses CO-COS-CO2 gases to simulate corrosion induced by H2-H2S-H2O gases, will be demonstrated. CO-COS-CO2 and H2-H2S-H2O gases can be used to determine the PO2 and PS2 values of a sulfidizing/oxidizing corrosive environment, in terms of the rates of reactions and the predominances of the alloy corrosion products. In both gases, the combination of the PO2 and PS2 values determine the stabilities of sulfide and oxide corrosion products.
The presentation discusses how alloy corrosion measured in laboratory testing can be related to industrial conditions, which induce sulfidation/oxidation. Formation of both sulfide and oxide corrosion products indicates that sulfidation/oxidation is the prevailing corrosion mechanism. We’ll review the goals of laboratory testing and show how industrial environments rich in H2-H2S-H2O gases can be simulated in laboratory tests using CO-COS-CO2 gases. The important variables, which determine the corrosivity of the exposure conditions, are reviewed and a method, which uses CO-COS-CO2 gases to simulate corrosion induced by H2-H2S-H2O gases, will be demonstrated. CO-COS-CO2 and H2-H2S-H2O gases can be used to determine the PO2 and PS2 values of a sulfidizing/oxidizing corrosive environment, in terms of the rates of reactions and the predominances of the alloy corrosion products. In both gases, the combination of the PO2 and PS2 values determine the stabilities of sulfide and oxide corrosion products.
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02486 New Understanding on Corrosion of Alloys in High-Temperature Sulfidizing Gases

Product Number: 51300-02486-SG
ISBN: 02486 2002 CP
Author: R. C. John and A. L. Young
Publication Date: 2002
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Many alloys exposed in high-temperature process equipment corrode by sulfidation corrosion in the presence of H2-H2S gases. This paper discusses the latest results of an extensive testing program for a diverse group of about 15 commercial alloys exposed to temperatures of 300 - 900°C with exposure times up to 6,000 hours.
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