徐海卫,周旬,魏连启,晁伟,王晓婧,叶树峰,陈运法

• 1:中国科学院过程工程研究所多相复杂系统国家重点实验室
• 2:首钢技术研究院
• 3:首钢京唐钢铁联合有限责任公司

摘要(Abstract)：

研究了SPHC低碳钢分别在SO2浓度为0、100、200、500和1000 mg/m3的SO2-CO2-O2-N2混合气体中1200℃时的氧化行为,通过XRD分析氧化层的组成,使用SEM和EDX分析了氧化层的微观形貌和元素分布,采用热压缩实验和金相显微镜分析了氧化皮的除鳞难度。结果表明,SO2浓度高于200 mg/m3时,基体抗高温腐蚀性能明显降低。当SO2浓度高于500 mg/m3时,在氧化层和基体的界面处开始生成较为完整的FeS层,界面处富集的FeS降低了高温下氧化皮的粘附性,破坏高温下氧化皮的完整性,导致氧化加剧;同时降温后又附着在基体表面,提高了降温后氧化皮的去除难度。外层氧化层的Fe2O3层和Fe3O4,FeO混合层的结构在实验的SO2浓度范围内几乎保持不变。通过控制气氛中SO2含量,可以有效控制FeS在界面处的偏聚,减少低碳钢的高温腐蚀,降低后期氧化皮去除难度,提高产品的表面质量。

关键词(KeyWords)： 低碳钢;氧化;硫化;界面富集;除鳞性能

Abstract:

Keywords:

基金项目(Foundation): 国家科技部重大科技支撑项目(2006BAC02A14);; 国家自然科学基金(50774073);; 中国科学院知识创新工程重要方向项目(KGCS2-YW-224)

作者(Author): 徐海卫,周旬,魏连启,晁伟,王晓婧,叶树峰,陈运法

DOI: 10.13289/j.issn.1009-6264.2012.11.020

参考文献(References)：

• [1]Jolanta Gilewicz Wolter.Study of iron oxidation in sulfur dioxide atmospheres by means of the 35S radioisotope[J].Oxidation of Metals,1977,11(2):81-90.
• [2]McAdam G,Young D J.Kinetic and morphological development of oxide-sulfide scales on iron at 1073 K[J].Oxidation of Metals,1992,37(3):281-300.
• [3]Young D J,Watson S.High temperature corrosion in mixed gas environments[J].Oxidation of Metals,1995,44(1):239-264.
• [4]刘海平,齐慧滨,何业东,等.Fe50Mo在不同硫压下的高温硫化行为[J].金属热处理学报,1997,18(1):50-54.LIU Hai-ping,QI Hui-bin,HE Ye-dong,et al.Sulfidation of Fe50Mo alloy in S2 with various sulphur pressures[J].Transactions of Metal HeatTreatment,1997,18(1):50-54.
• [5]刘伟东,屈华,周宇.钢中部分硫化物共价键能与其析出行为的关系[J].材料热处理学报,2007,28(2):136-140.LIU Wei-dong,QU Hua,ZHOU Yu.Relationship between the covalent bond energy of sulfides and their precipitation behavior in steel[J].Transactions of Materials and Heat Treatment,2007,28(2):136-140.
• [6]Gilewicz J,Zurekt Z.Corrosion of iron in sulfur dioxide at 0.1 MPa[J].Oxidation of Metals,1996,45(5):469-486.
• [7]Mcadam G,Young D J.Mechanisms of the simultaneous sulfidation and oxidation of Fe-Mn alloys[J].Corrosion Science,1996,38(2):241-266.
• [8]Gesmundo F.Mechanism of the simultaneous formation of oxide and sulfide at the scale surface during the oxidation of a pure metal in mixedatmospheres[J].Oxidation of Metals,1979,13(3):237-244.
• [9]McAdam G,Young D J.Morphological development of oxide-sulfide scales on iron and iron-manganese alloys[J].Oxidation of Metals,1987,28(3):165-181.
• [10]Tiearney T C,Natesan K.Review of the development and breakdown of protective oxide scales on alloys exposed to coal-derived atmospheres[J].Oxidation of Metals,1982,28(3):213-235.
• [11]Lobnig R E,Grabke H J.Mechanisms of simultaneous sulfidation and oxidation of Fe-Cr and Fe-Cr-Ni alloys and of the failure of protective chromiascales[J].Corrosion Science,1990,30(10):1045-1071
• [12]Xiao C B,Chen W X.Sulfidation resistance of CeO2-modified HVOF sprayed FeAl coatings at 700℃[J].Surface and Coatings Technology,2006,201(6):3625-3632.
• [13]Li Z Y,Wang B,Zhang H Q.Comparison of corrosion modes of oxidation and sulphidation of weld metal with rare earth oxides[J].Science andTechnology of Welding&Joining,2008,13(1):33-38.
• [14]Takeda M,Kushida H.Influence of oxidation temperature and Cr content on the adhesion and microstructure of scale on low Cr steels[J].Oxidation ofMetals,2010,73:1-13.
• [15]Geneve D,Rouxel D.Descaling ability of low-alloy steel wires depending on composition and rolling process[J].Corrosion Science,2010,52(4):1155-1166.
• [16]Pistorius P C,Quagraine N A,Coetzee C.Descaling behaviour of stainless steel following simulated reheating[J].The Journal of The South AfricanInstitute of Mining and Metallurgy,2003,12:607-615.
• [17]巩党国,方峰,蒋建清,等.高碳钢氧化皮的形成及其机械剥离性能[J].材料热处理学报,2009,30(5):167-171.GONG Dang-guo,FANG Feng,JIANG Jian-qing,et al.Oxide scale formation on high carbon steel and its mechanical descaling property[J].Transactions of Materials and Heat Treatment,2009,30(5):167-171.
• [18]Jha B B,Mishra B K,Ojha S N.Acoustic emission during isothermal oxidation of 2.25Cr-1Mo steel[J].Defect and Diffusion Forum,2009,294:93-104.
• [19]Funkenbusch A W,Smeggil J G,Bornstein N S.Reactive element-sulfur interaction and oxide scale adherence[J].Metallurgical Transactions A,1985,16:1164-1166.
• [20]Wild R K.High temperature oxidation of austenitic stainless steel in low oxygen pressure[J].Corrosion Science,1977,17(2):87-93.
• [21]Smialek J L.Effect of sulfur removal on Al2O3 scale adhesion[J].Metallurgical Transactions A,1991,3(3):2569-2752

文章评论(Comment)：