多场耦合条件下的B10铜镍合金在海水中的腐蚀行为
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摘要
采用浸泡试验、电化学阻抗谱、腐蚀产物成分分析等方法研究了B10铜镍合金(B10)在不同流速、含沙量、表面流体力场等多场耦合条件下的海水腐蚀规律。结果表明:B10在海水中的表面腐蚀产物膜主要是Cu_2O。经过海水浸泡后,B10表面能形成稳定致密的钝化膜,在低流速条件下,该钝化膜能够对基体起到保护作用。
The seawater corrosion law of B10 Cu-Ni alloy under multi-field coupling conditions at different flow rates,sediment concentrations and surface fluid force fields was studied by immersion test,electrochemical impedance spectroscopy and corrosion product composition analysis.The results show that the surface corrosion product film of B10 in seawater was mainly Cu_2 O.After seawater immersion,the surface of B10 could form a stable and dense passive film,which could protect the substrate under low flow rate conditions.
The seawater corrosion law of B10 Cu-Ni alloy under multi-field coupling conditions at different flow rates,sediment concentrations and surface fluid force fields was studied by immersion test,electrochemical impedance spectroscopy and corrosion product composition analysis.The results show that the surface corrosion product film of B10 in seawater was mainly Cu_2 O.After seawater immersion,the surface of B10 could form a stable and dense passive film,which could protect the substrate under low flow rate conditions.
引文
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[2]杨宁,于发奋.船舶海水管系的腐蚀及其防护[J].湖南农机,2011,38(9):65-66.
[3]张智强,郭泽亮,雷竹芳.铜合金在舰船上的应用[J].材料开发与应用,2006,21(5):43-47.
[4]武玉增.船舶海水管系管材腐蚀及防腐技术探讨[J].船舶,2005(6):43-46.
[5]刘光洲.船舶Cu-Ni合金海水管系的微生物腐蚀与控制[J].海洋科学,2005(7):87-90.
[6]洪理平,胡强生.船舶海水管系的腐蚀及其防护[J].浙江海洋学院学报(自然科学版),2002(1):66-68.
[7]杜娟,王洪仁,杜敏,等.B10铜镍合金流动海水冲刷腐蚀电化学行为[J].腐蚀科学与防护技术,2008,20(1):12-18.
[8]林乐耘,刘少峰,刘增才,等.铜镍合金海水腐蚀的表面与界面特征研究[J].腐蚀科学与防护技术,1999,11(1):37-43.
[9] NEODO S,CARUGO D,WHARTON J A,et al.Electrochemical behaviour of nickel-aluminum bronze in chloride media:influence of pH and benzotriazole[J].Journal of Electro Analytical Chemistry,2013,695:38-46.
[10] WHARTONA J A,STOKES K R.The influence of nickel-aluminium bronze microstructure and crevice solution on the initiation of crevice corrosion[J].Electrochemical Acta,2008,53(5):2463-2473.
[11]高康林,朱杰山.船舶海水管路腐蚀机理分析与防护措施[J].中国修船,2002(1):40-41.