| NiCrAlY涂层在模拟烟气中的热腐蚀行为 |
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| 引用本文： | 倪进飞,洪嘉,刘光明,李茂东,张民强,彭昱晨. NiCrAlY涂层在模拟烟气中的热腐蚀行为[J]. 腐蚀与防护, 2019, 40(8): 578-583 |
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| 作者姓名： | 倪进飞 洪嘉 刘光明 李茂东 张民强 彭昱晨 |
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| 作者单位： | 广州特种承压设备检测研究院,广州,510663;南昌航空大学材料科学与工程学院,南昌,330063;东方锅炉股份有限公司材料研究所,自贡,643001 |
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| 摘 要： | 采用超声速火焰喷涂在Super304H钢表面制备NiCrAlY涂层,研究了表面涂覆Na2SO4+K2SO4+Fe2O3盐膜的NiCrAlY涂层在650℃不同SO2含量模拟烟气环境中的热腐蚀行为。采用X射线衍射(XRD),扫描电镜(SEM)能谱仪(EDS)对该涂层及其高温腐蚀产物的成分、形貌进行了分析。结果表明:NiCrAlY涂层在含0.15%(质量分数)SO2的模拟烟气环境中表现出良好的耐蚀性,随着SO2含量的升高腐蚀加重,涂层表面腐蚀产物主要为NiCr2O4并含有少量Fe2O3;由于腐蚀介质通过涂层缺陷向内扩散,在涂层与基体界面生成了硫的富集腐蚀产物带。
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| 关 键 词： | NICRALY涂层 模拟烟气 热腐蚀 |
Hot Corrosion Behavior of NiCrAlY Coating in Simulated Flue Gas |
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| NI Jinfei,HONG Jia,LIU Guangming,LI Maodong,ZHANG Minqiang,PENG Yuchen. Hot Corrosion Behavior of NiCrAlY Coating in Simulated Flue Gas[J]. Corrosion & Protection, 2019, 40(8): 578-583 |
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| Authors: | NI Jinfei HONG Jia LIU Guangming LI Maodong ZHANG Minqiang PENG Yuchen |
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| Affiliation: | (Guangzhou Special Pressure Equipment Inspection and Research Institute, Guangzhou 510663, China;Schoolof Materials Science and Engineering, Nanchang Hangkong University, Nanchang 330063, China;MaterialResearch Institute, Dongfang Boiler Group Co.? Ltd., Zigong 643001, China) |
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| Abstract: | NI Jinfei;HONG Jia;LIU Guangming;LI Maodong;ZHANG Minqiang;PENG Yuchen(Guangzhou Special Pressure Equipment Inspection and Research Institute, Guangzhou 510663, China;Schoolof Materials Science and Engineering, Nanchang Hangkong University, Nanchang 330063, China;MaterialResearch Institute, Dongfang Boiler Group Co.? Ltd., Zigong 643001, China) |
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| Keywords: | NiCrAlY coating simulated flue gas hot corrosion |
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