| P91钢亚音速喷涂NiCr/Cr3C2涂层的热腐蚀行为研究 |
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| 引用本文： | 繆筱玲,汪元奎,刘光明,陈嵩松.P91钢亚音速喷涂NiCr/Cr3C2涂层的热腐蚀行为研究[J].表面技术,2011(5):25-28. |
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| 作者姓名： | 繆筱玲 汪元奎 刘光明 陈嵩松 |
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| 作者单位： | 东方电气集团东方锅炉股份有限公司材料研究所,自贡,643001;南昌航空大学无损检测技术教育部重点实验室,南昌,330063;成都市长诚热喷涂技术有限责任公司,成都,610300 |
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| 摘 要： | 采用亚音速火焰喷涂方法在P91钢上制备了NiCr/Cr3C2涂层,研究了样品在600,650和700℃的80 ％Na2 SO4 +10％K2SO4+10％KCl(质量分数,后同)混合熔融盐中的热腐蚀行为,利用XRD和SEM分析了表面成分和结构.结果表明:喷涂NiCr/Cr3 C2涂层样品在热腐蚀过程中,腐蚀产物从样品表...
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| 关 键 词： | NiCr/Cr3C2涂层 热腐蚀 Na2 SO4-K2 SO4-KCl |
Hot Corrosion Behavior of Subersonic Sprayed NiCr/Cr_3C_2 Coating on P91 Steel |
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| MIAO Xiao-ling,WANG Yuan-kui,LIU Guang-ming,CHEN Song-song.Hot Corrosion Behavior of Subersonic Sprayed NiCr/Cr_3C_2 Coating on P91 Steel[J].Surface Technology,2011(5):25-28. |
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| Authors: | MIAO Xiao-ling WANG Yuan-kui LIU Guang-ming CHEN Song-song |
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| Affiliation: | MIAO Xiao-ling1,WANG Yuan-kui1,LIU Guang-ming2,CHEN Song-song3(1.Material Research Institute,Dongfang Boiler Group Co.,Ltd,Dongfang Electric Corporation,Zigong 643001,China,2.Key Laboratory of Nondestructive Testing,Ministry of Education,Nanchang Hangkong University,Nanchang 330063,3.Chengdu Changcheng Thermal Spraying Technology Limited Liability Company,Chengdu 610300,China) |
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| Abstract: | NiCr/Cr3C2 coating was prepared on P91 steel by subsonic flame spraying process.The hot corrosion tests of the coated samples were conducted in 80%Na2SO4 + 10%K2SO4 + 10%KCl molten salts at 600,650 and 700 ℃,respectively.The surface morphology and microstructures of corroded samples were examined by XRD and SEM.It is shown that the the corrosion products spall from sample surface on a large scale,which lead to mass loss during the tests.Especially,mass loss is accelerated when the samples are tested at 700 ℃.After oxidation the corroded products on the samples surface are mainly composed of Ni3S2 and Cr2O3.Sulfides layer is observed at the interface of substrate/coating,which resultes in weak-bonding interface and lead to corrosion products spalled from smaple surface during hot corrosion. |
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| Keywords: | NiCr/Cr3C2 coating hot corrosion Na2SO4-K2SO4-KCl |
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