杨华春,梁勤,杨小川,任善平,刘光明

• 1:东方电气集团东方锅炉股份有限公司材料研究所
• 2:南昌航空大学材料科学与工程学院

摘要(Abstract)：

在人工合成烟气环境中研究了一种新型镍-铬-铁基高温合金GH984G在700℃的腐蚀行为,通过改变烟气中SO_2浓度探索了SO_2浓度对材料高温腐蚀行为的影响。结果表明:在700℃下腐蚀随着气氛中SO_2浓度的升高而加重,不同SO_2浓度气氛中合金表面都形成了以Cr_2O_3为主的致密氧化膜。气氛中SO_2与金属反应在氧化膜中生成少量硫化物,在氧化膜/基体界面有硫的富集。由于致密的Cr_2O_3具有良好的保护性,GH984G合金在不同SO_2的烟气环境中表现出良好的耐蚀性。

关键词(KeyWords)： GH984G高温合金;烟气;二氧化硫;腐蚀

Abstract:

Keywords:

基金项目(Foundation): 国家能源应用技术研究及工程示范项目(NY20110103A-1);; 国家自然科学基金项目(51161022);; 江西省教育厅科技计划项目(DB201301133,201301050)

作者(Author): 杨华春,梁勤,杨小川,任善平,刘光明

DOI: 10.13289/j.issn.1009-6264.2017.01.014

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