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Hot corrosion behaviors of austenitic heat-resistant steels S31042, S31035, and C-HRA-5 in flue gas environment of ultra-supercritical coal-fired boilers
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Xudong FANG1, 2, Yuzhou WANG3, Hansheng BAO4, Naiqiang ZHANG3, Peiyuan PAN3
Thermal Power Generation | 2023, 52(1) : 111 - 122
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Thermal Power Generation | 2023, 52(1): 111-122
• Power generation technology forum •
Hot corrosion behaviors of austenitic heat-resistant steels S31042, S31035, and C-HRA-5 in flue gas environment of ultra-supercritical coal-fired boilers
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Xudong FANG1, 2, Yuzhou WANG3, Hansheng BAO4, Naiqiang ZHANG3, Peiyuan PAN3
Affiliations
  • 1.State Key Laboratory of Advanced Stainless Steel Materials, Taiyuan Iron and Steel (Group) Co., Ltd., Taiyuan 030003, China
  • 2.Technology Center, Shanxi Taiyuan Stainless Steel Co., Ltd., Taiyuan 030003, China
  • 3.School of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing 100026, China
  • 4.Institute for Special Steels, Central Iron and Steel Research Institute, Beijing 100081, China
Published: 2023-01-25 doi: 10.19666/j.rlfd.202205105
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In order to study the corrosion behaviors of candidate materials for superheater of supercritical boilers in high-temperature flue gas environment, three austenitic heat-resistant steels including S31042, S31035 and C-HRA-5 were exposed to laboratorial simulated coal-fired flue gas for hot corrosion tests. The tests were carried out at 650, 675, 700 and 725 ℃. On the sample surface, there were three conditions including no coating, coating with real coal ash, and coating with corrosive simulated coal ash. The test duration was 500 h. The corrosion kinetic curves of the three materials were obtained through experimental research, and corrosion behaviors of the material were analyzed by XRD, SEM and EDS. Moreover, corrosion resistance of the three materials was compared. The results indicated that, the three materials had excellent resistance to oxidation and corrosion under the conditions of no coating and coating with real coal ash. Under the condition of coating with corrosive simulated coal ash, the material corrosion intensifies and the corrosion products are layered. The temperature effect was different under different coating conditions. S31042 had the best corrosion resistance, and the corrosion resistance of S31035 and C-HRA-5 materials was comparable.

ultra-supercritical boiler  /  austenitic steel  /  coal-fired power station  /  high-temperature corrosion  /  hot corrosion
Xudong FANG, Yuzhou WANG, Hansheng BAO, Naiqiang ZHANG, Peiyuan PAN. Hot corrosion behaviors of austenitic heat-resistant steels S31042, S31035, and C-HRA-5 in flue gas environment of ultra-supercritical coal-fired boilers[J]. Thermal Power Generation, 2023 , 52 (1) : 111 -122 . DOI: 10.19666/j.rlfd.202205105
Funding
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  • National New Material Production and Application Demonstration Platform, MIIT-Key Project for the Construction of a Demonstration Platform for the Production and Application of Materials for Ultra-Supercritical Power Units(TC210H022)
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Year 2023 volume 52 Issue 1
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Article Info
doi: 10.19666/j.rlfd.202205105
  • Receive Date：2022-05-24
  • Online Date：2026-01-23
  • Published：2023-01-25
Article Data
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History
  • Received：2022-05-24
Funding
National New Material Production and Application Demonstration Platform, MIIT-Key Project for the Construction of a Demonstration Platform for the Production and Application of Materials for Ultra-Supercritical Power Units(TC210H022)
Affiliations
    1.State Key Laboratory of Advanced Stainless Steel Materials, Taiyuan Iron and Steel (Group) Co., Ltd., Taiyuan 030003, China
    2.Technology Center, Shanxi Taiyuan Stainless Steel Co., Ltd., Taiyuan 030003, China
    3.School of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing 100026, China
    4.Institute for Special Steels, Central Iron and Steel Research Institute, Beijing 100081, China
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https://castjournals.cast.org.cn/joweb/rlfd/EN/10.19666/j.rlfd.202205105
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表12种不同金属材料的力学参数
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多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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