含砂海水对40Cr钢加速冲刷腐蚀性能影响
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摘要
目的研究40Cr钢在实际海水中的冲刷腐蚀性能。方法采用自制旋转冲刷实验装置,模拟实际海洋环境对40Cr钢进行实验。试验介质为含有质量分数为0.15%、0.3%、1%石英砂(300目左右)的青岛海域天然海水,冲刷流速分别为1、3、5 m/s。用交流阻抗谱和极化曲线测试检测其冲刷腐蚀性能,采用失重法测量冲刷腐蚀速率,并用扫描电镜观察其表面形貌,用XRD、EDS技术检测腐蚀产物成分。结果当流速一定,石英砂的质量分数为0.3%时,腐蚀速率最小,交流阻抗谱和极化曲线结合分析显示,此时最耐腐蚀,腐蚀产物成分为FeO(OH)。当含砂量一定时,随着流速的增加,试样腐蚀速率快速增加,耐蚀性逐渐下降,腐蚀产物主要成分为Fe O(OH)。结论流速对40Cr的冲刷腐蚀速率影响较大,而含砂量对冲刷腐蚀速率的影响较小。
Objective To research the erosion corrosion performance of 40 Cr steel in actual seawater. Methods The experiment was carried out with a self-made rotary scouring experimental apparatus to simulate the actual marine environment to test40 Cr steel. The test medium was natural seawater of Qingdao which containing 0.15%, 0.3%, 1% quartz sand(about 300 mesh),and the flushing flow rates were 1 m/s, 3 m/s and 5 m/s, respectively. The erosion corrosion performance was measured by AC impedance spectrum and polarization curve. The corrosion rate was measured by the weight loss method. The surface morphology was observed by scanning electron microscopy. And the corrosion product composition was analyzed by XRD and EDS.Results When the flow rate was constant, the sand content was 0.3%, and the corrosion weight loss rate was the smallest. The combination of AC impedance spectrum and polarization curve showed that the corrosion resistance was the highest, and the corrosion product was FeO(OH). As the flow rate increased, the corrosion loss rate of the sample increased rapidly, and the corrosion resistance decreased gradually. The mainly corrosion product composition was FeO(OH). Conclusion The flow rate has a great influence on the erosion-corrosion rate of 40 Cr, while the sand content has little effect on the erosion-corrosion rate.
Objective To research the erosion corrosion performance of 40 Cr steel in actual seawater. Methods The experiment was carried out with a self-made rotary scouring experimental apparatus to simulate the actual marine environment to test40 Cr steel. The test medium was natural seawater of Qingdao which containing 0.15%, 0.3%, 1% quartz sand(about 300 mesh),and the flushing flow rates were 1 m/s, 3 m/s and 5 m/s, respectively. The erosion corrosion performance was measured by AC impedance spectrum and polarization curve. The corrosion rate was measured by the weight loss method. The surface morphology was observed by scanning electron microscopy. And the corrosion product composition was analyzed by XRD and EDS.Results When the flow rate was constant, the sand content was 0.3%, and the corrosion weight loss rate was the smallest. The combination of AC impedance spectrum and polarization curve showed that the corrosion resistance was the highest, and the corrosion product was FeO(OH). As the flow rate increased, the corrosion loss rate of the sample increased rapidly, and the corrosion resistance decreased gradually. The mainly corrosion product composition was FeO(OH). Conclusion The flow rate has a great influence on the erosion-corrosion rate of 40 Cr, while the sand content has little effect on the erosion-corrosion rate.
引文
[1]ANDREWS N,GIOURNTAS L,GALLOWAY A M,et al.Effect of Impact Angle on the Slurry Erosion-corrosion of Stellite 6 and SS316[J].Wear,2014,320:143-151.
[2]郑玉贵,姚治铭.流体力学因素对冲刷腐蚀的影响机制[J].腐蚀科学与防护技术,2000,12(1):36-40.
[3]GIOURNTAS L,HODGKIESS T,GALLOWAY A M.Comparative Study of Erosion-corrosion Performance on a Range of Stainless Steels[J].Wear,2015,332:1051-1058.
[4]LIU R,YAO J,ZHANG Q.Effects of Molybdenum Content on the Wear/Erosion and Corrosion Performance of Low-carbon Stellite Alloys[J].Materials&Design,2015,78:95-106.
[5]FLORES J F,NEVILLE A,KAPUR N,et al.An Experimental study of the Erosion-corrosion Behavior of Plasma Transferred Arc MMCs[J].Wear,2009,267(1-4):213-222.
[6]MENG H,HU X,NEVILLE A.A Systematic Erosion-corrosion Study of Two Stainless Steels in Marine Conditions Via Experimental Design[J].Wear,2007,263(1):355-362.
[7]朱娟,张乔斌,陈宇,等.冲刷腐蚀的研究现状[J].中国腐蚀与防护学报,2014,34(3):199-210.
[8]SONG F,DU L.Erosion Corrosion of Low-alloy Wear-resistant Steels in Alkaline Slurry[J].Journal of Iron and Steel Research,International,2017,24(10):1065-1072.
[9]HU X,NEVILLE A.An Examination of the Electrochemical Characteristics of Two Stainless Steels(UNSS32654 and UNS S31603)under Liquid-Solid Impingement[J].Wear,2004,256(5):537-544.
[10]TELFER C G,STACK M M,JANA B D.Particle Concentration and Size Effects on the Erosion-corrosion of Pure Metals in Aqueous Slurries[J].Tribology International,2012,53(9):35-44.
[11]ZHAO W,WANG C,ZHANG T,et al.Effects of Laser Surface Melting on Erosion-corrosion of X65 Steel in Liquid-Solid Jet Impingement Conditions[J].Wear,2016,362-363:39-52.
[12]ABEDINI M,GHASEMI H M.Synergistic Erosion-corrosion Behavior of Al-brass Alloy at Various Impingement Angles[J].Wear,2014,319(1-2):49-55.
[13]YANG Y,CHENG Y F.Parametric Effects on the Erosion-corrosion Rate and Mechanism of Carbon Steel Pipes in Oil Sands Slurry[J].Wear,2012,276:141-148.
[14]SELVAM K,AYYAGARI A,GREWAL H S,et al.Enhancing the Erosion-corrosion Resistance of Steel through Friction Stir Processing[J].Wear,2017,386-387:129-138.
[15]ZHANG X,WANG J,FAN H,et al.Erosion-corrosion Resistance Properties of 316L Austenitic Stainless Steels after Low-temperature Liquid Nitriding[J].Applied Surface Science,2018,440:755-762.
[16]CHEN L,BAI S L,GE Y Y,et al.Erosion-corrosion Behavior and Electrochemical Performance of Hastelloy C22 Coatings under Impingement[J].Applied Surface Science,2018,456:985-998.
[17]马力,闫永贵,魏翔云,等.907A?921A钢的抗冲刷腐蚀和磨蚀性能[J].腐蚀科学与防护技术,2006,18(5):364-366.
[18]王洪仁,姚萍,刘玉梅,等.新型海水管系材料HDR双相不锈钢的腐蚀和电化学性能[J].腐蚀与防护,2001(1):5-8.
[19]ZHENG Y G,YU H,JIANG S L,et al.Effect of the Sea Mud on Erosion-corrosion Behaviors of Carbon Steel and Low Alloy Steel in 2.4%NaCl Solution[J].Wear,2008264(11-12):1051-1058.
[20]MARCELIN S,PéBèRE N,RéGNIER S.Electrochemical Characterisation of a Martensitic Stainless Steel in a Neutral Chloride Solution[J].Electrochimica Acta,201387:32-40.
[21]VYAS R N,WANG B.Electrochemical Analysis of Conducting Polymer Thin Films[J].International Journal of Molecular Sciences,2010,11(4):1956-1972.
[2]郑玉贵,姚治铭.流体力学因素对冲刷腐蚀的影响机制[J].腐蚀科学与防护技术,2000,12(1):36-40.
[3]GIOURNTAS L,HODGKIESS T,GALLOWAY A M.Comparative Study of Erosion-corrosion Performance on a Range of Stainless Steels[J].Wear,2015,332:1051-1058.
[4]LIU R,YAO J,ZHANG Q.Effects of Molybdenum Content on the Wear/Erosion and Corrosion Performance of Low-carbon Stellite Alloys[J].Materials&Design,2015,78:95-106.
[5]FLORES J F,NEVILLE A,KAPUR N,et al.An Experimental study of the Erosion-corrosion Behavior of Plasma Transferred Arc MMCs[J].Wear,2009,267(1-4):213-222.
[6]MENG H,HU X,NEVILLE A.A Systematic Erosion-corrosion Study of Two Stainless Steels in Marine Conditions Via Experimental Design[J].Wear,2007,263(1):355-362.
[7]朱娟,张乔斌,陈宇,等.冲刷腐蚀的研究现状[J].中国腐蚀与防护学报,2014,34(3):199-210.
[8]SONG F,DU L.Erosion Corrosion of Low-alloy Wear-resistant Steels in Alkaline Slurry[J].Journal of Iron and Steel Research,International,2017,24(10):1065-1072.
[9]HU X,NEVILLE A.An Examination of the Electrochemical Characteristics of Two Stainless Steels(UNSS32654 and UNS S31603)under Liquid-Solid Impingement[J].Wear,2004,256(5):537-544.
[10]TELFER C G,STACK M M,JANA B D.Particle Concentration and Size Effects on the Erosion-corrosion of Pure Metals in Aqueous Slurries[J].Tribology International,2012,53(9):35-44.
[11]ZHAO W,WANG C,ZHANG T,et al.Effects of Laser Surface Melting on Erosion-corrosion of X65 Steel in Liquid-Solid Jet Impingement Conditions[J].Wear,2016,362-363:39-52.
[12]ABEDINI M,GHASEMI H M.Synergistic Erosion-corrosion Behavior of Al-brass Alloy at Various Impingement Angles[J].Wear,2014,319(1-2):49-55.
[13]YANG Y,CHENG Y F.Parametric Effects on the Erosion-corrosion Rate and Mechanism of Carbon Steel Pipes in Oil Sands Slurry[J].Wear,2012,276:141-148.
[14]SELVAM K,AYYAGARI A,GREWAL H S,et al.Enhancing the Erosion-corrosion Resistance of Steel through Friction Stir Processing[J].Wear,2017,386-387:129-138.
[15]ZHANG X,WANG J,FAN H,et al.Erosion-corrosion Resistance Properties of 316L Austenitic Stainless Steels after Low-temperature Liquid Nitriding[J].Applied Surface Science,2018,440:755-762.
[16]CHEN L,BAI S L,GE Y Y,et al.Erosion-corrosion Behavior and Electrochemical Performance of Hastelloy C22 Coatings under Impingement[J].Applied Surface Science,2018,456:985-998.
[17]马力,闫永贵,魏翔云,等.907A?921A钢的抗冲刷腐蚀和磨蚀性能[J].腐蚀科学与防护技术,2006,18(5):364-366.
[18]王洪仁,姚萍,刘玉梅,等.新型海水管系材料HDR双相不锈钢的腐蚀和电化学性能[J].腐蚀与防护,2001(1):5-8.
[19]ZHENG Y G,YU H,JIANG S L,et al.Effect of the Sea Mud on Erosion-corrosion Behaviors of Carbon Steel and Low Alloy Steel in 2.4%NaCl Solution[J].Wear,2008264(11-12):1051-1058.
[20]MARCELIN S,PéBèRE N,RéGNIER S.Electrochemical Characterisation of a Martensitic Stainless Steel in a Neutral Chloride Solution[J].Electrochimica Acta,201387:32-40.
[21]VYAS R N,WANG B.Electrochemical Analysis of Conducting Polymer Thin Films[J].International Journal of Molecular Sciences,2010,11(4):1956-1972.