预涂覆Na2SO4-25%NaCl盐膜的HR3C钢的高温腐蚀行为

doi:10.3901/JME.2016.08.104

摘要/Abstract

摘要： 应用X射线衍射仪(X-ray diffraction, XRD)、扫描电子显微镜(Scanning electron microscope, SEM)、能谱仪(Energy dispersive spectrometer, EDS)和电子探针显微分析(Electron probe X-ray micro-analyser, EMPA)等分析方法研究预涂覆Na₂SO₄-25%NaCl盐膜的HR3C在650 ℃、750 ℃的高温腐蚀行为。结果表明：HR3C在650 ℃和750 ℃的腐蚀动力学曲线呈“抛物线”趋势递增;腐蚀产物由表向里依次是结构疏松的Fe₂O₃与相对致密的Cr₂O₃的氧化层、尖晶石结构的复杂氧化物以及由少量Fe/Ni硫化物和孔隙组成的腐蚀影响区;提高腐蚀温度或延长腐蚀时间,氧化膜明显增厚,与基体结合程度变差甚至剥离,腐蚀影响区孔隙密度增大,深度增加。分析认为：预涂覆Na₂SO₄-25%NaCl盐膜的HR3C的高温腐蚀是氧化、硫化与氯化共同作用的结果。腐蚀初期发生高温氧化,合金表面形成具有保护性作用的氧化层;氯化反应促进了混合盐膜的熔融与挥发性物质的形成,破坏了氧化层的致密性,加速了腐蚀反应的发生;硫化作用促使合金发生内硫化。

关键词: 高温腐蚀, 硫化, 氯化, 氧化

Abstract: The high-temperature corrosion behaviors of HR3C pre-coated Na₂SO₄-25%NaCl salt film at 650 ℃ and 750 ℃ are investigated by means of X-ray diffraction(XRD), scanning electron microscope(SEM), energy dispersive spectrometer(EDS) and electron probe X-ray micro-analyser(EMPA). The results show that the corrosion kinetic curves of HR3C at 650 ℃ and 750 ℃ reveal the parabolic growth law. The corrosion products are mainly composed of Cr/Fe oxides, minor compound oxides with spinals structure as well as (Fe,Ni)_xS_y. Improving the corrosion temperature or prolonging the corrosion time, the oxide films in thickness increase significantly and the adjacent with the substrate is worse and seriously peeled off the surface, moreover, the pore densities among the corrosion affected zone (the interface between the oxide films and the matrix) increase. It is concluded that the high temperature corrosion of HR3C pre-coated Na₂SO₄-25%NaCl salt film is dominated by the interaction of oxidation, sulfidation and chlorination and Cl^- is more detrimental than SO₄^2- to HR3C. In the early stage of corrosion, high temperature oxidation occurred on the surface of the alloy and formed the oxide layers which had protective effect. The chlorination reaction promoted the fluxing of the mixed salt film as well as the formation of the volatile products, which destroyed the compact oxide layers. In addition, the vulcanization accelerated the occurrence of the alloy sulfide.

Key words: chlorination, high temperature corrosion, oxidation, sulfidation

中图分类号:

TG172

李萍, 秦鹏, 赵杰, 李廷举, 庞胜娇. 预涂覆Na₂SO₄-25%NaCl盐膜的HR3C钢的高温腐蚀行为[J]. 机械工程学报, 2016, 52(8): 104-111.

LI Ping, QIN Peng, ZHAO Jie, LI Tingju, PANG Shengjiao. High Temperature Corrosion Behaviors of HR3C Steel Pre-coated Na₂SO₄-25%NaCl Salt Film[J]. Journal of Mechanical Engineering, 2016, 52(8): 104-111.

参考文献

[1] 张建强,张国栋,姚兵印,等. 马氏体/奥氏体异种钢焊接接头IV型蠕变失效数值模拟[J]. 机械工程学报,2013,49(12)：78-85.
ZHANG Jianqiang,ZHANG Guodong,YAO Bingyin,et al. Numerical simulation on the type IV creep failure of dissimilar welded Joint between T91 and HR3C heat-resistant steels[J]. Journal of Mechanical Engineering,2013,49(12)：78-85.
[2] 张强,邱绍宇,唐睿,等. 不锈钢及高温合金在拟临界区的腐蚀行为研究[J]. 核动力工程,2013,34(1)：157-161.
ZHANG Qiang,QIU Shaoyu,TANG Rui,et al. Study on corrosion behaviors of stainless steels and refractory alloys in pseudo-critical zone[J]. Nuclear Power Engineering,2013,34(1)：157-161.
[3] 唐丽英,贾建民,蔡晖,等. 超超临界机组HR3C不锈钢蒸汽侧氧化层的微观结构和生长机理[J]. 腐蚀与防护,2011,32(10)：775-778.
TANG Liying,JIA Jianmin,CAI Hui,et al. Microstructure and growth mechanism of the oxide scale formed on HR3C at the steam side in ultra supercritical(USC) units[J]. Corrosion & Protection,2011,32(10)：775-778.
[4] 李守信,阎维平,方立军. 电站锅炉受热面高温氯腐蚀的机理探讨[J]. 锅炉制造,1999,11(4)：19-23.
LI Shouxin,YAN Weiping,FANG Lijun. Study on the mechanism of high temperature chlorine corrosion of heating surface of boiler in power plant[J]. Boiler Manufacturing,1999,11(4)：19-23.
[5] SHINATA Y,TAKAHASHI F,HASHIURA K. NaCl-induced hot corrosion of stainless steels[J]. Mater. Sci. Eng.,1987(87)：399-405.
[6] LAI Y. High-temperature corrosion of engineering alloys[M]. OH：American Society for Metals,1990.
[7] NIU Y,GESMUNDO F,VIANI F,et al. The corrosion of Ni 3 Al in a combustion gas with and without Na 2 SO 4 -NaCl deposits at 600-800℃[J]. Oxid. Met.,1994,42(3-4)：265-284.
[8] CLEVINGER M A,KESSELL K M,MESSINA C G,et al. Phase diagrams for ceramists[M]. OH：The American Ceramic Society Inc.,1989.
[9] 李安娜. 超超临界钢烟侧腐蚀研究[D]. 大连：大连理工大学,2013.
LI Anna. Study on fireside corrosion of ultra-supercritical (USC) steel[D]. Dalian：Dalian University of Technology,2013.
[10] SHI L Q. On the possibility of a Na 2 SO 4 -Na 2 O eutectic melt developing on metals coated with Na 2 SO 4 deposit in oxygen/air at intermediate temperatures[J]. Corrosion Science,1995,37(8)：1281-1287.
[11] PAVLET K,LAI Haiping,KRYSTYNA S. A method for investigation of hot corrosion by gaseous Na 2 SO 4 [J]. Corrosion Science,2013(73)：230-236.
[12] DEB D,IYER S R,RADHAKRISHNAN V M. A comparative study of oxidation and hot corrosion of a cast nickel base superalloy in different corrosive environments[J]. Materials Letters,1996,29(1-3)：19-23.
[13] AANG C J,HE T T. Morphological development of subscale formation in Fe-Cr-(Ni) alloys with chloride and sulfates coating[J]. Oxidation of Metals,2002,58(3-4)：415-437.
[14] HOSSAIN M K,SAUNDERS S R J. A microstructural study of the influence of NaCl vapor on the oxidation of a Ni-Cr-Al alloy at 850 ℃[J]. Oxidation of Metals,1978,12(1)：1-2.
[15] SHINATA Y,HARA M,NAKAGAAA T. Accelerated oxidation of chromium by trace of sodium chloride vapor[J]. JIM,1991,32(10)：969-972.
[16] HIRAMATSU N,UEMATSU Y,TANAKA T,et al. Effect of alloying elements on NaCl induced hot corrosion of stainless steels[J]. Material Science and Engineering (A),1989(120)：319-325.
[17] 包新华. 熔盐相图智能数据库研究及其应用[D]. 上海：上海大学,2005.
BAO Xinhua. Study and application of intelligent database of phase diagram of molten salt systems [D]. Shanghai：Shanghai University,2005.
[18] TSAUR Charng-Cheng,ROCK J C,AANG Chaur-Jeng,et al. The hot corrosion of 310 stainless steel with pre-coated NaCl/Na 2 SO 4 mixtures at 750 ℃[J]. Materials Chemistry and Physics,2005(89)：445-453.
[19] KNACKE O,KUBASCHEASKI O,HESSELMANN K. Thermo-chemical properties of inorganic substance[M]. 2nd ed. Berlin：Springer,1991.
[20] SHINATA Y. Accelerated oxidation rate of chromium induced by sodium chloride[J]. Oxidation of Metals,1987,27(5-6)：315-332.
[21] LAI G Y. High-temperature corrosion of engineering alloys[M]. OH：American Society for Metals,1990.
[22] GUPTA D K,RAPP R A. The solubilities of NiO,Co 3 O 4 and ternary oxides in fused Na 2 SO 4 at 1200 K[J]. Journal of the Electrochemical Society,1980(127)：2194-2202.
[23] TSAUR C C,ROCK J C,WANG C J,et al. The hot corrosion of 310 stainless steel with Pre-coated NaCl/Na 2 SO 4 mixtures at 750 ℃[J]. Materials Chemistry and Physics,2005,89(2-3)：445-453.
[24] ZHAO S Q,XIE X S,SMITH G D,et al. The corrosion of inconel alloy 740 in simulated environments for pulverized coal-fired boiler[J]. Materials Chemistry and Physics,2005,90(2-3)：275-281.

预涂覆Na₂SO₄-25%NaCl盐膜的HR3C钢的高温腐蚀行为

High Temperature Corrosion Behaviors of HR3C Steel Pre-coated Na₂SO₄-25%NaCl Salt Film

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价

[1]	武韩强, 陈卓, 叶曦珉, 张诗博, 李偲偲, 曾江, 汪强, 吴勇波. 钛合金超声辅助等离子体氧化改性磨削基本加工特性研究[J]. 机械工程学报, 2024, 60(9): 13-25.
[2]	张驰, 刘富初, 穆英朋, 吴丁一, 吴明, 林雨霄, 韩光超, 樊自田. 基于浆料直写成形的多孔氧化铝陶瓷孔隙率与抗弯强度的相关性研究[J]. 机械工程学报, 2024, 60(17): 330-338.
[3]	穆英朋, 刘富初, 张驰, 黄捷飞, 刘鑫, 韩光超, 樊自田, 许峰. 水溶性氧化钙陶瓷型芯的挤出式3D打印参数优化与表面精度控制研究[J]. 机械工程学报, 2024, 60(1): 170-178.
[4]	舒康, 丁昊昊, 林强, 王文健, 郭俊, 刘启跃. 中等强度沙尘暴环境下钢轨硬度对轮轨滚动磨损与损伤影响[J]. 机械工程学报, 2023, 59(9): 186-197.
[5]	成焕波, 郭立军, 周金虎, 王华锋, 汤明喜. 再生碳纤维回收利用及其增材制造复合材料性能评价[J]. 机械工程学报, 2023, 59(7): 375-388.
[6]	饶思贤, 华晓春, 赵新生, 郭祥钦, 赵丽, 王孝义. 高流速强湍流下关键因素对环烷酸腐蚀的影响行为研究[J]. 机械工程学报, 2023, 59(16): 204-212.
[7]	郭磊, 刘检华, 夏焕雄, 敖晓辉. 精密仪表用铝合金瓷质阳极氧化表面粘接性能研究[J]. 机械工程学报, 2023, 59(12): 236-244.
[8]	周怡, 齐乐华, 罗俊, 苏林. 微域保护气对金属微滴喷射过程影响机制研究[J]. 机械工程学报, 2023, 59(1): 219-230.
[9]	于康博, 吴甲民, 郑雯, 陈双, 张洁, 刘珩, 文世峰, 闫春泽, 史玉升. 浆料固相含量对数字光处理成形SiO₂基陶瓷性能的影响[J]. 机械工程学报, 2023, 59(1): 259-266.
[10]	李鑫桐, 王帅, 杜佳鑫, 缪宇新, 陆皓, 徐济进. GO/AlSi10Mg激光熔化沉积组织性能研究[J]. 机械工程学报, 2023, 59(1): 309-318.
[11]	高尚, 李洪钢, 康仁科, 何宜伟, 朱祥龙. 新一代半导体材料氧化镓单晶的制备方法及其超精密加工技术研究进展[J]. 机械工程学报, 2021, 57(9): 213-232.
[12]	赵国龙, 夏宏军, 李亮, 信连甲, 何宁. 激光诱导可控氧化辅助微细铣削TiAl金属间化合物的研究[J]. 机械工程学报, 2021, 57(9): 254-263.
[13]	张平, 钟舜聪, 张秋坤, 戴晨煜, 陈伟强, 林杰文. 热障涂层折射率与厚度的太赫兹无损检测[J]. 机械工程学报, 2021, 57(20): 47-56.
[14]	江荣, 吴常皓, 万煜伟, 张禄, 宋迎东. 涡轮盘合金氧化-疲劳裂纹扩展机理和寿命预测研究进展[J]. 机械工程学报, 2021, 57(16): 122-131.
[15]	张鹏程, 温秋玲, 姜峰, 沈少鑫, 陆静. 纳米孔阵列加工技术研究进展[J]. 机械工程学报, 2020, 56(9): 223-233.