99/01412 High temperature corrosion of boiler tube steels in simulated coal-fired plant atmospheres containing water vapor

1999 ◽  
Vol 40 (2) ◽  
pp. 143
Keyword(s):  
Water Vapor ◽  
High Temperature ◽  
High Temperature Corrosion ◽  
Boiler Tube ◽  
Tube Steels

High Temperature Corrosion Properties of Heating Surface in Waste-to-Energy Boiler Tube

2017 ◽  
Vol 34 (1) ◽  
pp. 27-33
Author(s):  
Jung Won Bang ◽  
Younghee Kim ◽  
Soo-Ryong Kim ◽  
Dong-Geun Shin ◽  
Kye-Hong Cho ◽  
...  
Keyword(s):  
High Temperature ◽  
Heating Surface ◽  
High Temperature Corrosion ◽  
Waste To Energy ◽  
Boiler Tube ◽  
Corrosion Properties

High temperature corrosion of valve steels in atmosphere containing water vapor

2008 ◽  
Vol 13 (11) ◽  
pp. 1709-1714 ◽  
Author(s):  
Z. Jurasz ◽  
K. Adamaszek ◽  
R. Janik ◽  
Z. Grzesik ◽  
S. Mrowec
Keyword(s):  
Water Vapor ◽  
High Temperature ◽  
High Temperature Corrosion

Corrosion of Inconel 625 at 600-800°C in N2/H2O/H2S Atmospheres

2014 ◽  
Vol 1025-1026 ◽  
pp. 591-596 ◽  
Author(s):  
Min Jung Kim ◽  
Dong Bok Lee
Keyword(s):  
Water Vapor ◽  
High Temperature ◽  
Middle Layer ◽  
High Temperature Corrosion ◽  
Alloying Elements ◽  
Inconel 625 ◽  
Mixed Gases

Ni-base Inconel 625 alloys with a composition of 58.9Ni-22Cr-9Mo-5Fe 3.5Nb-0.4Si-0.4Mn-0.4Al-0.4Ti (wt.%) corroded at 600, 700 and 800 °C for up to 30 h in 1 atm of N2/H2O/H2S-mixed gases. They corroded fast owing to the formation of sulfides and the presence of hydrogen and water vapor in the gas. Triple layered scales formed. Nickel corroded to NiS to form the outer NiS layer, where Fe was dissolved. Chromium corroded to Cr-sulfides to form the middle layer. Other alloying elements such as Mo, Nb, Si, Mn, Al, and Ti corroded to form the inner layer that consisted primarily of intermixed sulfides and oxides. Since sulfides were present throughout the scale and hydrogen made the scale porous and fragile, Inconel 625 was nonprotective during high-temperature corrosion in N2/H2O/H2S gases.

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