铁素体不锈钢在高温尿素环境中的腐蚀行为研究

doi:10.11901/1005.3093.2020.065

材料研究学报

2020, Vol. 34

Issue (9): 712-720 DOI: 10.11901/1005.3093.2020.065

研究论文

本期目录 | 过刊浏览

铁素体不锈钢在高温尿素环境中的腐蚀行为研究

黄安然¹, 张伟²^,³, 王学林¹^,⁴, 尚成嘉¹(

), 范佳杰¹

1.北京科技大学钢铁共性技术协同创新中心北京 100083
2.钢铁研究总院北京 100081
3.中信金属股份有限公司北京 100004
4.重庆铜梁高新技术产业开发区管委会重庆 402560

Corrosion Behavior of Ferritic Stainless Steel in High Temperature Urea Environment

HUANG Anran¹, ZHANG Wei²^,³, WANG Xuelin¹^,⁴, SHANG Chengjia¹(

), FAN Jiajie¹

1. Collaborative Innovation Center of Steel Technology, University of Science and Technology Beijing, Beijing 100083, China
2. Central Iron & Steel Research Institute, Beijing 100081, China
3. CITIC Metal Co. Ltd., Beijing 100004, China
4. Chongqing Tongliang High-tech Industrial Development Zone Management Committee, Chongqing 402560, China

引用本文:

黄安然, 张伟, 王学林, 尚成嘉, 范佳杰. 铁素体不锈钢在高温尿素环境中的腐蚀行为研究[J]. 材料研究学报, 2020, 34(9): 712-720.
Anran HUANG, Wei ZHANG, Xuelin WANG, Chengjia SHANG, Jiajie FAN. Corrosion Behavior of Ferritic Stainless Steel in High Temperature Urea Environment[J]. Chinese Journal of Materials Research, 2020, 34(9): 712-720.

全文: PDF(14236 KB) HTML

摘要:

对三种商用车排气系统用铁素体不锈钢(436L、439M、441)进行了尿素结晶腐蚀试验，以模拟铁素体不锈钢在商用车排气系统内选择性催化还原器(SCR)中的渗氮腐蚀行为。探究了合金成分及夹杂物对不锈钢耐高温尿素腐蚀的影响，并依据EDS表征结果阐释了材料内部腐蚀的渗氮机理。研究表明，在高温热震疲劳和氧化的协同作用下，高温高氮的环境导致铁素体不锈钢晶界及晶内局部区域快速析出氮化铬颗粒，造成晶界及基体局部区域贫铬。由于436L和441不锈钢含有较高的Mo和Nb，其耐高温尿素腐蚀能力显著优于439M。此外，由于436L和441不锈钢中夹杂物细小弥散，也降低了氮化铬在夹杂物的形核析出几率，成为提高抗高温尿素腐蚀的另一个因素。

关键词 ：材料失效与保护, 高温尿素腐蚀, 晶间腐蚀, X射线能谱分析, 铁素体不锈钢, 渗氮机理, 夹杂物

Abstract：

In order to simulate the nitriding corrosion behavior of ferritic stainless steels in selective catalytic reduction (SCR) system of commercial vehicle, urea corrosion tests were carried out on three ferritic stainless steels (436L, 439M and 441) used in exhaust system of commercial vehicles. The influences of alloy composition and inclusions on high temperature urea corrosion resistance of ferritic stainless steels were investigated. The results show that under the synergistic effect of high temperature fatigue and oxidation, the high temperature and high nitrogen environment results in the rapid precipitation of chromium nitride particles at grain boundaris and in the local area of the ferritic stainless steels, resulting in chromium depletion. As 436L and 441 ferritic stainless steels contain higher Nb and Mo, thy present significantly higher resistance to high temperature urea corrosion rather than 439M. Moreover, due to the fine dispersion of inclusions in 436L and 441 stainless steels, the probability of nucleation and precipitation of chromium nitride on inclusions is also reduced, which is another cause for improving the resistance to high temperature urea corrosion of the relevant steels.

Key words： materials failure and protection high temperature urea corrosion intergranular corrosion EDS ferritic stainless steels nitriding mechanism inclusion

收稿日期: 2020-03-02

ZTFLH:

TG142.71

基金资助:中信金属股份有限公司(2018-D114/M611)

作者简介: 黄安然，女，1997年生，硕士生

	服务

	把本文推荐给朋友
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	黄安然
	张伟
	王学林
	尚成嘉
	范佳杰
44.8K

链接本文:

https://www.cjmr.org/CN/10.11901/1005.3093.2020.065 或 https://www.cjmr.org/CN/Y2020/V34/I9/712

表1 三种铁素体不锈钢的材料化学成分(质量分数，%)

图1 实验装置示意图

图2 热循环制度

图3 439M、436L和441三种铁素体不锈钢试样氧化层的截面SEM形貌

图4 439M、436L和441三种铁素体不锈钢试样内部腐蚀层的SEM形貌

图5 439M、436L和441三种不锈钢表面残留氧化层和渗氮层厚度

图6 三种不锈钢总腐蚀深度统计

图7 436L不锈钢EDS测定结果

图8 436L不锈钢内部晶界处EDS分析结果

图9 渗氮区和基体中夹杂物的EDS元素分布图

图10 三种不锈钢夹杂物分布情况

图11 三种不锈钢夹杂物尺寸统计图

[1]	Dong S J, Wang N. Research on high temperature urea cyclic corrosion resistance of stainless steel for SCR post processor [J]. Automob. Technol. Mater., 2017, (5): 41
[1]	(董善举, 王楠. SCR后处理器用不锈钢耐尿素高温循环腐蚀性能的研究 [J]. 汽车工艺与材料, 2017, (5): 41)
[2]	Xu Z H, Zhang G L, Li M C, et al. Corrosion behavior of stainless steels in simulated automotive SCR environment [A]. Proceedings of the 10th China Iron & Steel Annual Meeting and the 6th Baosteel Academic Annual Meeting III [C]. Shanghai: China Metal Society, 2015: 975
[2]	(徐泽瀚, 张国利, 李谋成等. 不锈钢在汽车SCR模拟环境中的腐蚀行为研究 [A]. 第十届中国钢铁年会暨第六届宝钢学术年会论文集[C]. 上海: 中国金属学会, 2015)
[3]	Shang C J. Research progress of ferritic stainless steel for automobile exhaust system [N]. World Metals, 2018-08-28(B08))
[3]	(尚成嘉. 汽车排气系统用铁素体不锈钢的研究进展 [N]. 世界金属导报, 2018-08-28(B08))
[4]	Li M X, Shang C J. Corrosion study of stainless steels for commerial Vehicle SCR system [J]. Shanghai Coatings, 2018, 56(2): 5
[4]	(李明轩, 尚成嘉. 商用车SCR系统用不锈钢的腐蚀性研究 [J]. 上海涂料, 2018, 56(2): 5)
[5]	Nocker J, Nyborg L, Norell M. Corrosion of stainless steels in simulated diesel exhaust environment with urea [J]. Mater. Corros., 2011, 63: 388
[6]	Miraval C, Saedlou S, Evrard R, et al. Influence of Selective Catalytic Reduction (SCR) system on stainless steel durability [J]. Meta. And Mater., 2013, 66: 153
[7]	Wang S D, Han P H, Ma R Y, et al. Effect of urea on condensates corrosion of stainless steels in simulated automotive exhaust environments [J]. Chin J. Soc. Corros. Prot., 2013, 33: 41
[7]	(王士栋, 韩沛洪, 马荣耀等. 尿素对模拟汽车废气环境中不锈钢冷凝液腐蚀行为的影响 [J]. 中国腐蚀与防护学报, 2013, 33: 41)
[8]	Zhang Y F, Shores D A. Cracking and spoiling of oxide scale from 304 stainless steel at high temperatures [J]. J. Electrochem. Soc., 1994, 141: 1255
[9]	Teng Y F. High temperature fatigue behavior of 429 and 429 Mo ferritic stainless steels [D]. Shenyang: Shenyang University of Technology, 2016
[9]	(滕云峰. 429与429Mo两种铁素体不锈钢的高温疲劳行为 [D]. 沈阳: 沈阳工业大学, 2016)
[10]	Yun D W, Seo H S, Jun J H, et al. Molybdenum effect on oxidation resistance and electric conduction of ferritic stainless steel for SOFC interconnect [J]. Int. J. Hydrogen Energ., 2012, 37: 10328
[11]	Jiang Y, Kim S, Lee J. Effect of different Mo contents on tensile and corrosion behaviors of CD4MCU cast duplex stainless steels [J]. Metall. Mater. Trans., 2005, 36A: 1229
[12]	Li M X, Zhang W, Wang X L, et al. Effect of Nb on the performance of 409 stainless steel for automotive exhaust systems [J]. Steel. Res. Int., 2018, 89: 1700558
[13]	Fujita N, Ohmura K, Kikuchi M, et al. Effect of Nb on high-temperature properties for ferritic stainless steel [J]. Scr. Mater., 1996, 35: 705
[14]	Shu J. Investigation on corrosion resistance properties and formabilities of ferritic stainless steel used as aumotive exhaust system [D]. Shanghai: Shanghai Jiao Tong University, 2013
[14]	(舒俊. 汽车排气系统用铁素体不锈钢耐蚀性能和成形性能的研究 [D]. 上海: 上海交通大学, 2013)
[15]	Li Z. Research on intergranular corrosion resistance of low chromium ferritic stainless steel [D]. Shanghai: Fudan University, 2013
[15]	(李钊. 低铬铁素体不锈钢耐晶间腐蚀性能研究 [D]. 上海: 复旦大学, 2013)
[16]	Zhang H, Zhang G L, Liu X, et al. Condensate corrosion behavior of stainless steels for automotive mufflers [J]. Chin J. Soc. Corros. Prot., 2016, 36: 20
[16]	(张辉, 张国利, 刘星等.消声器用不锈钢的冷凝液腐蚀行为研究 [J]. 中国腐蚀与防护学报, 2016, 36: 20)
[17]	Zhang C Q, Lv G M, Ouyang M H, et al. Research progress of nitride precipitation and its effects on corrosion resistance of high-nitrogen austenitic stainless steel [J]. Hot Work. Technol., 2018, 47(2): 33
[17]	(张昌青, 吕广明, 欧阳明辉等. 高氮奥氏体不锈钢氮化物析出及其对耐蚀性影响的研究进展 [J]. 热加工工艺, 2018, 47(2): 33)
[18]	Guo Y Y. Study on the technology of plasma nitriding and plasma nitrocarburising of austenitic stainless steel in the low lem perature [D]. Shenyang: Northeastern University, 2008
[18]	(郭元元. 奥氏体不锈钢低温离子渗氮及碳氮共渗工艺研究 [D]. 沈阳: 东北大学, 2008)
[19]	Nockert J, Norell M. Corrosion at the urea injection in SCR-system during component test [J]. Mater. Corros., 2013, 64: 34
[20]	Saedlou S, Santacreu P, Leseux J. Suitable stainless steel selection for exhaust line containing a selective catalytic reduction (SCR) system [J]. SAE Int., 2011-01-1323
[21]	Xiao J M. The Metallization of Stainless Steel. 2nd ed. [M]. Beijing: Metallurgical Industry Press, 2006
[21]	(肖纪美. 不锈钢的金属学问题. 第2版 [M]. 北京: 冶金工业出版社, 2006)
[22]	Wan Z. Study on intergranular corrosion of ferrite stainless steel [J]. Corros. Prot. Petrochem. Ind., 2015, 32(4): 62
[22]	(万章. 铁素体不锈钢晶间腐蚀问题的探讨 [J]. 石油化工腐蚀与防护, 2015, 32(4): 62)
[23]	Zhang H W. Research on Corrosion Resistance of Stainless Steel for Automotive Exhaust System [D]. Beijing: University of Science and Technology Beijing, 2013
[23]	(张宏伟. 汽车排气系统用不锈钢耐腐蚀性能研究 [D]. 北京: 北京科技大学, 2013)
[24]	Chen C, Shang C J, Song X, et al. Condensate corrosion behavior of new style ferritic stainless steels used in automotive exhaust system [J]. Iron Steel, 2009, 44(10): 78
[24]	(陈超, 尚成嘉, 宋欣等. 新型汽车排气系统用铁素体不锈钢的冷凝液腐蚀 [J]. 钢铁, 2009, 44(10): 78)
[25]	Salgado M F D, Rodrigues S C S, Santos D M, et al. Cyclic oxidation resistance of ferritic stainless steels used in mufflers of automobiles [J]. Eng. Fail. Anal, 2017, 79: 89

[1]	杨宝磊, 刘廷光, 苏香林, 范宇, 邱亮, 陆永浩. 热老化对316LN力学性能和晶间腐蚀敏感性的影响[J]. 材料研究学报, 2023, 37(5): 381-390.
[2]	冯晗旭, 赵连祥, 刘恩泽, 谭政, 宁礼奎, 佟健, 郑志, 李海英, 刘凯. 铬对GH4169母合金中夹杂物的影响[J]. 材料研究学报, 2023, 37(2): 136-144.
[3]	高巍, 刘江南, 魏敬鹏, 要玉宏, 杨巍. TC4钛合金表面氧化亚铜掺杂微弧氧化层的结构和性能[J]. 材料研究学报, 2022, 36(6): 409-415.
[4]	杨留洋, 谭卓伟, 李同跃, 张大磊, 邢少华, 鞠虹. 利用WBE及EIS测试技术对管道缺陷区动态冲刷腐蚀行为的研究[J]. 材料研究学报, 2022, 36(5): 381-391.
[5]	陈铮, 杨芳, 王成, 杜瑶, 卢壹梁, 朱圣龙, 王福会. 惰性无机填料比例和颗粒尺寸对纳米Al/Al₂O₃ 改性有机硅涂料抗高温氧化行为的影响[J]. 材料研究学报, 2022, 36(4): 271-277.
[6]	李玉峰, 张念飞, 刘丽爽, 赵甜甜, 高文博, 高晓辉. 含磷石墨烯的制备及复合涂层的耐蚀性能[J]. 材料研究学报, 2022, 36(12): 933-944.
[7]	郝剑, 刘芳, 杨树林, 姚晓雨, 孙文儒. 熔速对氩气保护GH4169G合金电渣锭组织及夹杂物的影响[J]. 材料研究学报, 2022, 36(11): 811-820.
[8]	陈艺文, 王成, 娄霞, 李定骏, 周科, 陈明辉, 王群昌, 朱圣龙, 王福会. 无机复合涂层对CB2铁素体耐热钢在650℃水蒸气中的防护[J]. 材料研究学报, 2021, 35(9): 675-681.
[9]	唐荣茂, 刘光明, 刘永强, 师超, 张帮彦, 田继红, 甘鸿禹. 用电化学噪声技术研究Q235钢在含氯盐模拟混凝土孔隙液中的腐蚀行为[J]. 材料研究学报, 2021, 35(7): 526-534.
[10]	张大磊, 魏恩泽, 荆赫, 杨留洋, 豆肖辉, 李同跃. 超级铁素体不锈钢表面超疏水结构的制备及其耐腐蚀性能[J]. 材料研究学报, 2021, 35(1): 7-16.
[11]	王冠一, 车欣, 张浩宇, 陈立佳. Al-5.4Zn-2.6Mg-1.4Cu合金板材的低周疲劳行为[J]. 材料研究学报, 2020, 34(9): 697-704.
[12]	公维炜, 杨丙坤, 陈云, 郝文魁, 王晓芳, 陈浩. 扫描电化学显微镜原位观察碳钢涂层缺陷处的交流腐蚀行为[J]. 材料研究学报, 2020, 34(7): 545-553.
[13]	郭铁明, 徐秀杰, 张延文, 宋志涛, 董志林, 金玉花. Q345q桥梁钢和Q345qNH耐候钢在模拟工业大气+除冰盐混合介质中的腐蚀行为[J]. 材料研究学报, 2020, 34(6): 434-442.
[14]	朱金阳, 谭成通, 暴飞虎, 许立宁. 一种新型含Al低Cr合金钢在模拟油田采出液环境下的CO₂腐蚀行为[J]. 材料研究学报, 2020, 34(6): 443-451.
[15]	梁新磊, 刘茜, 王刚, 王震宇, 韩恩厚, 王帅, 易祖耀, 李娜. 氧化石墨烯改性环氧隔热涂层的耐蚀和隔热性能研究[J]. 材料研究学报, 2020, 34(5): 345-352.

Viewed

Full text

Abstract

Cited

Shared

Discussed