| 引用本文: | 郎经纬,杜晓东,陈丰君,詹马骥,王夫成,周丹,刘光复.叶片表面硫化腐蚀层弧斑低温等离子体去除[J].中国表面工程,2016,29(3):103~108 |
| LANG Jing-wei,DU Xiao-dong,CHEN Feng-jun,ZHAN Ma-ji,WANG Fu-cheng,ZHOU Dan,LIU Guang-fu.Removing of Sulfide Corrosion Layer on Blade Surface by Low-temperature Plasma[J].China Surface Engineering,2016,29(3):103~108 |
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| 摘要: |
| 为研究空气压缩机叶片表面腐蚀层的弧斑低温等离子体去除,利用高温高压反应釜模拟压缩机叶片腐蚀环境条件,在FV(520)B不锈钢表面制备了H2S腐蚀产物膜;利用玻恩-哈伯循环计算了硫化产物的晶格能,基于弧斑等离子体去除过程中能量计算探讨了腐蚀层去除机理;利用示波器、SEM、EDS等对放电过程的电压信号变化、处理后表面形貌、表面元素分布进行分析,研究了弧斑低温等离子体去除腐蚀层的过程、机制及电流对去除过程的影响。结果表明:表面硫化物层可在弧斑能量作用下脱离键合而去除;其去除过程分层进行,各层去除时的电压信号出现明显差异;弧斑低温等离子去除过程中,当电流为10、20和30 A时,去除时间为127、64和42 s,试样表面粗糙度分别为1.18、1.69和1.76 μm,表明电流增大能使去除效率提高,并使处理后试样表面粗糙度增加。 |
| 关键词: 压缩机叶片 低温等离子体 硫化腐蚀 电子逸出功 |
| DOI：10.11933/j.issn.1007-9289.2016.03.014 |
| 分类号: |
| 基金项目:国家重点基础研究发展计划(973计划)(2011CB013402) |
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| Removing of Sulfide Corrosion Layer on Blade Surface by Low-temperature Plasma |
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LANG Jing-wei, DU Xiao-dong, CHEN Feng-jun, ZHAN Ma-ji, WANG Fu-cheng, ZHOU Dan, LIU Guang-fu
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School of Material Science and Engineering, Hefei University of Technology, Hefei 230009
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| Abstract: |
| Low-temperature plasma removal was used to remove the sulfide corrosion layer on the air compressor blade surface. For investigating the mechanism of low-temperature plasma removal, the sulfide corrosion layer was prepared on FV(520)B stainless steels' surface in an autoclave with the simulated servicing environment of the air compressor blades. Born Haber cycle theory was used to calculate the lattice energy of sulphide. The result of energy calculation shows that the arc spot of low-temperature plasma has enough energy to evaporate the sulfide layer on the blade surface. The analysis of the voltage signal reveals that the voltage changes obviously and forms three levels during the removing process, which is proved by analyzing the morphology and the elemental distribution on the surface by means of oscilloscope, SEM, EDS. When the current is 10, 20 and 30 A, the removal time is 127, 64 and 42 s, and the surface roughness of the sample is 1.18, 1.69 and 1.76 μm, which indicates that increasing the current can improve the removal efficiency and the surface roughness of the treated sample in low-temperature plasma removal process. |
| Key words: compressor blade low-temperature plasma sulfide corrosion electron work function |
