9Cr1MoVNb钢蒸汽侧氧化膜形态及其形成机理

doi:10.11930/j.issn.1004-9649.2013.1.54.4

中国电力 ›› 2013, Vol. 46 ›› Issue (1): 54-58.DOI: 10.11930/j.issn.1004-9649.2013.1.54.4

9Cr1MoVNb钢蒸汽侧氧化膜形态及其形成机理

谢国胜^1，2，龙会国^1，2，龙毅^1，2

1. 湖南省湘电锅炉压力容器检验中心有限公司,湖南长沙 410007;
2. 湖南省电力公司科学研究院,湖南长沙 410007

收稿日期:2012-09-15 出版日期:2013-01-05 发布日期:2015-12-09
作者简介:谢国胜（1968—）,男,湖南涟源人,高级工程师,从事电站金属部件安全性评价与剩余寿命评估工作。E-mail: heptri2791@163.com

Study on Steam-Side Oxidation Mechanism and Characterization of Oxide Scales Grown on T91 Tubes

XIE Guo-sheng^1,2, LONG Hui-guo^1,2, LONG Yi^1,2

1. Hunan Xiangdian Boiler & Pressure Vessel Test Center Ltd., Changsha 410007, China;
2. Hunan Electric Power Company Research Institute, Changsha 410007, China

Received:2012-09-15 Online:2013-01-05 Published:2015-12-09

摘要/Abstract

摘要： 采用金相显微镜、扫描电镜、能谱分析仪、X-射线衍射仪等试验分析手段,对某电厂锅炉过热器用9Cr1MoVNb（T91）钢蒸汽侧氧化膜形态及其形成规律进行研究。结果表明,根据截面氧元素分布及Fe-Cr元素传质规律,该类合金钢蒸汽侧氧化膜分为内、次外、外3层,内层为致密的富Cr层与贫Cr层交替出现的非均质氧化层,中间层为疏松、柱状结构的Fe₃O₄,最外层为较薄的Fe₂O₃;外氧化层氧化颗粒间存在缝隙,粘附强度低,温度变化剧烈时最易剥落,次外层次之。

关键词: T91, 水蒸气氧化, 氧化膜, 扩散传质, 氧化机理

Abstract: The oxidation mechanism and characterization of steam-side oxidation scale formed on the internal surface of the super-heater tubes made of T91 steel removed from the boiler of a power plant are studied by using the testing and analyzing methods of metallurgic inspection, scanning electron microscope-energy dispersive X-ray (SEM-EDX) and X-ray diffraction analysis. The results show that based on the section oxygen elemental distribution and the Fe-Cr elemental diffraction rule, the original steam-side oxidation scale normally consists of three layers. The inner layer is heterosphere oxides, which consists of Cr-enriched and Cr-depleted zones appearing alternatively; the middle layer is the loose and porous Fe3O4 with the columnar crystal microstructure; the outer layer is the thin Fe2O3. In the outer layer, there are small gaps among the oxides and the adhesion is weak, which makes it easy for the oxides to flake off during great temperature variation. The middle layer works better than the outer one.

Key words: T91, steam oxidation, oxidation scale, diffraction, oxidation mechanism

中图分类号:

TK224.9

谢国胜，龙会国，龙毅. 9Cr1MoVNb钢蒸汽侧氧化膜形态及其形成机理[J]. 中国电力, 2013, 46(1): 54-58.

XIE Guo-sheng, LONG Hui-guo, LONG Yi. Study on Steam-Side Oxidation Mechanism and Characterization of Oxide Scales Grown on T91 Tubes[J]. Electric Power, 2013, 46(1): 54-58.

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参考文献

[1] 赵杰,李东明,方园园. T91/P91钢持久性能的统计分析及可靠性预测[J]. 金属学报, 2009,45（7）：835-839.ZHAO Jie, LI Dong-ming, FANG Yuan-yuan. Statiscal analysis and reliability prediction of creep rupture property for T91/P91 steel[J]. Acta Merallurgica Sinica, 2009, 45(7): 835-839.
[2] 金耀华,刘江南,王正品,等. T91钢高温水蒸气氧化动力学研究[J]. 铸造技术,2007,28（2）：207-209.JIN Yao-hua, LIU Jiang-nan, WANG Zheng-pin, et al . Research on the oxidation kinetics of the T91 steel under high temperature water vapour condition[J]. Foundary Technology, 2007, 28(2):207-209.
[3] 耿波,刘江南,赵颜芬,等. T91钢高温水蒸气氧化层形成机理研究[J]. 铸造技术,2004,25（12）：914-918. GENG Bo, LIU Jiang-nan, ZHAO Yan-fen, et al . Mechanism of the formation of the oxidation layers of T91 steel tube under the high temperature water vapour[J]. Foundary Technology, 2004, 25(12): 914-918.
[4] 金耀华,王正品,要玉宏,等. T91钢高温水蒸气氧化层显微组织分析[J]. 西安工业大学学报,2008,28（5）：435-440. JIN Yao-hua, WANG Zheng-pin, YAO Yu-hong, et al . Microstructure of T91 steel oxide layer at high-temperature and water vapour condition[J]. Journal of Xi’an Technological University, 2008,28(5):435-440.
[5] 刘江南,赵颜芬,耿波,等. T91钢高温高压水蒸汽氧化膜微观组织结构研究[J].铸造技术,2005,26（3）：202-204.LIU Jiang-nan, ZHAO Yan-fen, GENG Bo, et al . Research on the microstructure of the oxidation fiIm of T91 steel tube under the high temperature and high pressure water vapor[J]. Foundary Technology, 2005, 26(3): 202-204.
[6] 张都清,徐敬军,赵国群,等. 9Cr-1Mo钢在含水蒸气气氛中的氧化行为[J]. 材料研究学报,2008,22（6）：599-605. ZHANG Du-qing, XU Jing-jun, ZHAO Guo-qun, et al . Oxidation characteristic of ferritic-martensitic steel T91 in water-vapour atmosphere[J]. Chinese Journal of Materials Research, 2008, 22(6): 599-605.
[7] NICKEL H, WOUTERS T, THIELE M. The effect of water vapor on the oxidation behavior of 9% Cr steels combustion gases [J]. Fresenius Journal of Analytical Chemistry, 1998, 361: 540-544.
[8] CHEN Y, SRIDHARAN K, ALLEN T. Corrosin behavior of ferritic- martensitic steel T91 in super critical water[J]. Corrosion Science, 2006, 48: 2843-2854.
[9] 黄兴德,周新雅,游喆,等. 超（超）临界锅炉高温受热面蒸汽氧化皮的生长与剥落特性[J]. 动力工程, 2009,29（6）：602-608.HUANG Xing-de, ZHOU Xing-ya, YOU zhe, et al . Oxide scale growth and exfoliation behavior on high temperature heat- absorbing surface exposed to steam for supercritical (ultra supercritical) boilers[J]. Journal of Power Engineering, 2009, 29(6): 602-608.
[10] LAVERDE D, GOMEZ-ACEBO T, CASTRO F. Continuous and cyclic oxidation of T91 ferritic steel under steam[J]. Corrosion Science, 2004, 46: 613-631.
[11] 李铁藩. 金属的高温氧化和热腐蚀[M]. 北京：化学工业出版社, 2003.
[12] 李美栓. 金属的高温腐蚀[M]. 北京：冶金工业出版社,2001.
[13] KLEIN l E, YANIV A E, SHARON J. The oxidation mechanison of Fe-Ni-Co alloys[J]. Oxidation of Metals, 1981,16(1/2): 99-102.
[14] SHEN Jian-nian, ZHOU Long-jiang, LI Tie-fan. High temperature oxidation of Fe-Cr alloys in wet oxygen[J]. Oxidation of Metals, 1997, 48:347-356.

9Cr1MoVNb钢蒸汽侧氧化膜形态及其形成机理

Study on Steam-Side Oxidation Mechanism and Characterization of Oxide Scales Grown on T91 Tubes

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9Cr1MoVNb钢蒸汽侧氧化膜形态及其形成机理

Study on Steam-Side Oxidation Mechanism and Characterization of Oxide Scales Grown on T91 Tubes

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