Fe_2SiO_4相析出行为对焊线钢丝表面镀铜的影响
|
摘要
采用扫描电镜(SEM)、背散射电子成像(BSE)的方法,研究了Fe_2SiO_4相析出行为对焊线钢丝表面镀铜的影响。结果表明:在工业加热炉气氛(残氧≤2.5%)条件下,形成的液态Fe_2SiO_4相酸洗难以去除,且在高线多道次轧制及用户多道次拉拔后具有遗传性,是镀铜层呈现暗灰色或黑色的原因。在试验钢Si含量为0.9 mass%的条件下,在温度≤1150℃时,Si元素对氧化有阻碍作用;在温度>1150℃时,Fe2Si O4相熔化成为氧、铁离子的快速扩散通道,与FeO呈相互包裹状态成为酸洗难以去除的FeO-Fe_2SiO_4相。
Effect of Fe_2SiO_4phase precipitation on copper plating of welding wire was investigated by scanning electron microscopy(SEM)and back scattered electron(BSE) imaging.The results indicate that liquid Fe_2SiO_4phase forms under industrial furnace atmosphere(residual oxygen ≤2.5%) which is difficult to remove by pickling.Moreover,the liquid Fe_2SiO_4phase has certain heredity thus it exists after high line multi-pass rolling and drawing process which induce black or dark gray copper layer on the wire.Under the condition of the testing steel with Si content of 0.9 mass%,when temperature is less or equal to 1150 ℃,Si hindered the formation of ferrous oxides.When temperature is greater than 1150 ℃,Fe_2SiO_4becomes liquid and accelerates diffusion of oxygen and iron ions,and forms FeOFe_2SiO_4which is hard to remove after pickling.
Effect of Fe_2SiO_4phase precipitation on copper plating of welding wire was investigated by scanning electron microscopy(SEM)and back scattered electron(BSE) imaging.The results indicate that liquid Fe_2SiO_4phase forms under industrial furnace atmosphere(residual oxygen ≤2.5%) which is difficult to remove by pickling.Moreover,the liquid Fe_2SiO_4phase has certain heredity thus it exists after high line multi-pass rolling and drawing process which induce black or dark gray copper layer on the wire.Under the condition of the testing steel with Si content of 0.9 mass%,when temperature is less or equal to 1150 ℃,Si hindered the formation of ferrous oxides.When temperature is greater than 1150 ℃,Fe_2SiO_4becomes liquid and accelerates diffusion of oxygen and iron ions,and forms FeOFe_2SiO_4which is hard to remove after pickling.
引文
[1]王丽萍,王立峰,罗志俊,等.帘线钢表面氧化优化工艺及控制机理研究[J].材料科学与工艺,2014,22(1):94-99.WANG Li-ping,WANG Li-feng,LUO Zhi-jun.et al.Control mechanism and surface oxidation process optimization of cord wire steel[J].Materials Science and Technology,2014,22(1):94-99.
[2]Torres M,Colas R.A model for heat conduction through the oxide layer of steel during hot rolling[J].Journal of Materials Processing Technology,2000,105(3):258-263.
[3]Logani R,Smeltzer W W.Kinetics of wustite-fayalite scale formation on iron-silicon alloys[J].Oxidation of Metals,1969,1(1):3-21.
[4]Yang Y L,Yang C H,Lin S N,et al.Effects of Si and its content on the scale formation on hot-rolled steel strips[J].Materials Chemistry and Physics,2008,112(2):566-571.
[5]Yang C H,Lin S N,Chen C H,et al.Effects of temperature and straining on the oxidation behavior of electrical steels[J].Oxidation of Metals,2009,(72):145-157.
[6]Suárez L,Rodríguez-Calvillo P,Houbaert Y,et al.Oxidation of ultra-low carbon and silicon bearing steels[J].Corrosion Science,2010,52(6):2044-2049.
[7]Suárez L,Rodríguez-Calvillo P,Houbaert Y.Characterization of oxides on high-Si steel by EBSD[C]//Conference on New Developments on Metallurgy and Applications of High Strength Steels.Buenos Aires,2008:1223-1230.
[8]Fukagawa T,Okada H,Maehara Y.Mechanism of red scale defect formation in Si-added hot-rolled steel sheets[J].ISIJ International,1994,34(11):906-911.
[9]Okada H,Fukagawa T,Ishihara H.Prevention of red scale formation during hot rolling of steels[J].ISIJ International,1995,35(9):886-891.
[10]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):433-468.
[11]赵军,霍健.步进式加热炉内气氛对钢坯氧化烧损影响的数值模拟[J].钢铁研究学报,2010,22(11):11-14.ZHAO Jun,HUO Jian.Numerical simulation of effect of atmosphere on oxidation rate of slabs in walking beam reheating furnace[J].Journa1 of Iron and Steel Research,2010,22(11):11-14.
[12]Abuluwefa H,Guthrie R I L,Ajerscht F.The effect of oxygen concentration on the oxidation of low-carbon steel in the temperature range 1000 to1250℃[J].Oxidation of Metals,1996(46):423-440.
[13]Kusabiraki K,Watanabe R,Ikehata T,et al.High-temperature oxidation behavior and scale morphology of Si-containing steels[J].ISIJ International,2007,47(9):1329-1334.
[14]Suarez L,Schneider J,Houbaert Y.High-Temperature oxidation of Fe-Si alloys in the temperature range 900-1250℃[J].Diffusion in Solids and Liquids III,2008(273/276):661-666.
[15]Suarez L,Schneider J,Houbaert Y.Effect of Si on high-temperature oxidation of steel during hot rolling[J].Defect and Diffusion Forum,2008,(273/276):655-660.
[16]Diez-Ercilla M,Ros-yanez T,Petrov R,et al.Oxidation of silicon steels[J].Corrosion Engineering,Science and Technology,2004,(39):295-300.
[2]Torres M,Colas R.A model for heat conduction through the oxide layer of steel during hot rolling[J].Journal of Materials Processing Technology,2000,105(3):258-263.
[3]Logani R,Smeltzer W W.Kinetics of wustite-fayalite scale formation on iron-silicon alloys[J].Oxidation of Metals,1969,1(1):3-21.
[4]Yang Y L,Yang C H,Lin S N,et al.Effects of Si and its content on the scale formation on hot-rolled steel strips[J].Materials Chemistry and Physics,2008,112(2):566-571.
[5]Yang C H,Lin S N,Chen C H,et al.Effects of temperature and straining on the oxidation behavior of electrical steels[J].Oxidation of Metals,2009,(72):145-157.
[6]Suárez L,Rodríguez-Calvillo P,Houbaert Y,et al.Oxidation of ultra-low carbon and silicon bearing steels[J].Corrosion Science,2010,52(6):2044-2049.
[7]Suárez L,Rodríguez-Calvillo P,Houbaert Y.Characterization of oxides on high-Si steel by EBSD[C]//Conference on New Developments on Metallurgy and Applications of High Strength Steels.Buenos Aires,2008:1223-1230.
[8]Fukagawa T,Okada H,Maehara Y.Mechanism of red scale defect formation in Si-added hot-rolled steel sheets[J].ISIJ International,1994,34(11):906-911.
[9]Okada H,Fukagawa T,Ishihara H.Prevention of red scale formation during hot rolling of steels[J].ISIJ International,1995,35(9):886-891.
[10]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):433-468.
[11]赵军,霍健.步进式加热炉内气氛对钢坯氧化烧损影响的数值模拟[J].钢铁研究学报,2010,22(11):11-14.ZHAO Jun,HUO Jian.Numerical simulation of effect of atmosphere on oxidation rate of slabs in walking beam reheating furnace[J].Journa1 of Iron and Steel Research,2010,22(11):11-14.
[12]Abuluwefa H,Guthrie R I L,Ajerscht F.The effect of oxygen concentration on the oxidation of low-carbon steel in the temperature range 1000 to1250℃[J].Oxidation of Metals,1996(46):423-440.
[13]Kusabiraki K,Watanabe R,Ikehata T,et al.High-temperature oxidation behavior and scale morphology of Si-containing steels[J].ISIJ International,2007,47(9):1329-1334.
[14]Suarez L,Schneider J,Houbaert Y.High-Temperature oxidation of Fe-Si alloys in the temperature range 900-1250℃[J].Diffusion in Solids and Liquids III,2008(273/276):661-666.
[15]Suarez L,Schneider J,Houbaert Y.Effect of Si on high-temperature oxidation of steel during hot rolling[J].Defect and Diffusion Forum,2008,(273/276):655-660.
[16]Diez-Ercilla M,Ros-yanez T,Petrov R,et al.Oxidation of silicon steels[J].Corrosion Engineering,Science and Technology,2004,(39):295-300.