利用不同热处理工艺在热轧带钢表面形成不同组成与结构的氧化皮。采用SEM、XRD、LRS、干湿周期浸润腐蚀实验、EIS测试、开路电位测试对不同氧化皮热轧带钢在NaHSO3溶液中腐蚀行为进行了研究。研究表明,慢冷和炉冷所制热轧带钢氧化皮均由Fe2O3、Fe3O4、FeO和Fe组成,其中Fe2O3是微量的,前者含有更多的Fe3O4,后者含有更多的FeO。慢冷所制氧化皮致密、连续、厚度均匀;炉冷制备的氧化皮致密性较差,含有大量的缺陷。慢冷制备的氧化皮热轧带钢的耐蚀性要好于炉冷制备的热轧带钢的耐蚀性。
Different component and structure of scales were formed on the surface of hot rolled strip by different heat treatment processes.Corrosion behavior of the hot rolled strip with different oxide scales in sodium bisulfite solution were investigated by means of SEM,XRD,LRS,cyclic wet-dry immersion corrosion test,electrochemical impedance spectroscopy（EIS） and corrosion potential test.The results show that oxide scales prepared by different heat treatment processes mainly consist of Fe3O4/FeO/Fe,as well as a spot of Fe2O3.The relative content of Fe3O4 in the oxide scale prepared with slow cooling rate is higher than that in the oxide scale prepared by furnace cooling,while the relative content of FeO is lower.The scale prepared with slow cooling rate is dense,continuous and homogeneous in thickness,but the scale prepared by furnace cooling is less dense,with a lot of defects existing in the scale.The strip with scale formed at slow cooling rate exhibits more excellent corrosion resistance compared with that formed by furnace cooling.
参考文献
| [1] | 中国金属学会热轧板带学术委员会.中国热轧宽带钢轧机及生产技术[M].北京:冶金工业出版社,2002 |
| [2] | C. F. Dong;H. B. Xue;X. G. Li;H. B. Qi;Y. F. Cheng .Electrochemical corrosion behavior of hot-rolled steel under oxide scale in chloride solution[J].Electrochimica Acta,2009(17):4223-4228. |
| [3] | F.J. Perez;L. Martinez;M.P. Hierro;C. Gomez;A.L. Portela;G.N. Pucci;D. Duday;J. Lecomte-Beckers;Y. Greday .Corrosion behaviour of different hot rolled steels[J].Corrosion Science: The Journal on Environmental Degradation of Materials and its Control,2006(2):472-480. |
| [4] | 周贤良,周伟,华小珍,叶志国,彭新元.加热气氛中氧浓度对热轧带钢氧化皮结构及耐蚀性的影响[J].材料热处理学报,2010(07):134-139. |
| [5] | Chaklander A C D;Blair G R .Differential thermal study of FeO and Fe3 04[J].Journal of Thermal Analysis,1970,2:165-179. |
| [6] | R. V. Chen;W. V. D. Vuen .A Study of the Scale Structure of Hot-Rolled Steel Strip by Simulated Coiling and Cooling[J].Oxidation of Metals,2000(5/6):539-560. |
| [7] | J. W. Kim;J. W. Choi;D. B. Lee .Characterization of Oxide Scales Formed on Low Carbon Steel between 1100 and 1250 deg C in Air[J].Metals and Materials International,2005(2):131-134. |
| [8] | Bhattacharya R;Jha G;Kundu S;Shankar R;Gope N .Influence of cooling rate on the structure and formation of oxide scale in low carbon steel wire rods during hot rolling[J].Surface & Coatings Technology,2006(3/4):526-532. |
| [9] | Shi Jie;Wang De-ren;He Ye-dong;Qi Hui-bin;Wei Gao .Reduction of oxide scale on hot-rolled strip steels by carbon monoxide[J].Materials Letters,2008(20):3500-3502. |
| [10] | Gleeson B.;Hadavi S.M.M. .Isothermal transformation behavior of thermally-grown wustite[J].Materials at High Temperatures,2000(2):311-319. |
| [11] | Chen R Y;Yuen W Y D .Review of the high-temperature oxidation of iron and carbon steels in air or oxygen[J].Oxidation of Metals,2003,59(5-6):433-468. |
| [12] | Chen R Y;Yun W Y D .Oxide-scale structures formed on commercial hot-rolled steel strip and their formation mechanisms[J].Oxidation of Metals,2001,56(1-2):89-118. |
| [13] | 巩党国,方峰,蒋建清,李玉华,胡显军,陈少慧.高碳钢盘条氧化皮的激光拉曼光谱分析[J].理化检验-物理分册,2008(11):609-612. |
| [14] | A. Chattopadhyay;N. Bandyopadyay;A. K. Das .Oxide Scale Characterization of Hot Rolled Coils by Raman Spectroscopy Technique[J].Scripta materialia,2005(3):211-215. |
| [15] | 陈长风,路民旭,赵国仙,严密林,白真权,杨延清.腐蚀产物膜覆盖条件下油套管钢C02腐蚀电化学特征[J].中国腐蚀与防护学报,2003(03):139-143. |
| [16] | Weihua Sun;A. K. Tieu;Zhengyi Jiang;Cheng Lu .High temperature oxide scale characteristics of low carbon steel in hot rolling[J].Journal of Materials Processing Technology,2004(0):1307-1312. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%