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Title: Corrosion Performance of Fe-Based Alloys in Simulated Oxy-Fuel Environment

Abstract

The long-term corrosion of Fe-based alloys in simulated oxy-fuel environment at 1023 K (750 A degrees C) was studied. Detailed results are presented on weight change, scale thickness, internal penetration, microstructural characteristics of the corrosion products, and the cracking of scales for the alloys after exposure at 1023 K (750 A degrees C) for up to 3600 hours. An incubation period during which the corrosion rate was low was observed for the alloys. After the incubation period, the corrosion accelerated, and the corrosion process followed linear kinetics. Effects of alloy, CaO-containing ash, and gas composition on the corrosion rate were also studied. In addition, synchrotron nanobeam X-ray analysis was employed to determine the phase and chemical composition of the oxide layers on the alloy surface. Results from these studies are being used to address the long-term corrosion performance of Fe-based alloys in various coal-ash combustion environments and to develop methods to mitigate high-temperature ash corrosion.

Authors:
; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Fossil Energy (FE)
OSTI Identifier:
1391920
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article
Resource Relation:
Journal Name: Metallurgical and Materials Transactions. B, Process Metallurgy and Materials Processing Science; Journal Volume: 48; Journal Issue: 1
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Ash corrosion; CaO; Fe-based alloys; Oxy-fuel

Citation Formats

Zeng, Zuotao, Natesan, Ken, Cai, Zhonghou, and Rink, David L. Corrosion Performance of Fe-Based Alloys in Simulated Oxy-Fuel Environment. United States: N. p., 2016. Web. doi:10.1007/s11663-016-0796-5.
Zeng, Zuotao, Natesan, Ken, Cai, Zhonghou, & Rink, David L. Corrosion Performance of Fe-Based Alloys in Simulated Oxy-Fuel Environment. United States. doi:10.1007/s11663-016-0796-5.
Zeng, Zuotao, Natesan, Ken, Cai, Zhonghou, and Rink, David L. Thu . "Corrosion Performance of Fe-Based Alloys in Simulated Oxy-Fuel Environment". United States. doi:10.1007/s11663-016-0796-5.
@article{osti_1391920,
title = {Corrosion Performance of Fe-Based Alloys in Simulated Oxy-Fuel Environment},
author = {Zeng, Zuotao and Natesan, Ken and Cai, Zhonghou and Rink, David L.},
abstractNote = {The long-term corrosion of Fe-based alloys in simulated oxy-fuel environment at 1023 K (750 A degrees C) was studied. Detailed results are presented on weight change, scale thickness, internal penetration, microstructural characteristics of the corrosion products, and the cracking of scales for the alloys after exposure at 1023 K (750 A degrees C) for up to 3600 hours. An incubation period during which the corrosion rate was low was observed for the alloys. After the incubation period, the corrosion accelerated, and the corrosion process followed linear kinetics. Effects of alloy, CaO-containing ash, and gas composition on the corrosion rate were also studied. In addition, synchrotron nanobeam X-ray analysis was employed to determine the phase and chemical composition of the oxide layers on the alloy surface. Results from these studies are being used to address the long-term corrosion performance of Fe-based alloys in various coal-ash combustion environments and to develop methods to mitigate high-temperature ash corrosion.},
doi = {10.1007/s11663-016-0796-5},
journal = {Metallurgical and Materials Transactions. B, Process Metallurgy and Materials Processing Science},
number = 1,
volume = 48,
place = {United States},
year = {Thu Sep 15 00:00:00 EDT 2016},
month = {Thu Sep 15 00:00:00 EDT 2016}
}