| 宋宏林， 苏文献.施加电位对镍缝隙腐蚀过程中损伤演变的模拟[J].轻工机械,2019,37(2):38-44 |
| 施加电位对镍缝隙腐蚀过程中损伤演变的模拟 |
| Simulation of Damage Evolution in Process of Corrosion of Nickel by Applying Potential |
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| DOI：10.3969/j.issn.1005 2895.2019.02.008 |
| 中文关键词: 缝隙腐蚀 镍 损伤演变 腐蚀防护 COMSOL软件 |
| 英文关键词:crevice corrosion nickel damage evolution corrosion protection COMSOL software |
| 基金项目: |
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| 摘要点击次数: 956 |
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| 中文摘要: |
| 为了预测Ni200在24 ℃、0.5 mol/L H2SO4溶液中的缝隙腐蚀行为，开发了镍金属缝隙腐蚀的二维模型。在镍金
属电极表面施加电位，设定了模型条件、电位边界条件和控制方程；采用COMSOL软件模拟电位降控制的镍金属缝隙腐蚀，模拟了施加电位对不同缝隙间距的影
响以及缝隙腐蚀过程的镍电极损伤演变，界面电位和局部腐蚀电流密度的分布，并将模拟结果与已发表的实验结果对比。结果表明：该模型结果与文献实验值吻
合，可为金属的点蚀、缝隙腐蚀缝口堆积物引起的变形等问题提供参考，对金属的腐蚀防护有一定的参考意义。 |
| 英文摘要: |
| In order to predict the gap corrosion behavior of Ni200 in 24 ℃, 0.5 mol/L H2SO4 solution, a two dimensional model of nickel
metal crevice corrosion was developed. The potential is applied to the surface of the nickel metal electrode, the model conditions, potential boundary conditions and control equations were
set. The nickel metal crevice corrosion controlled by the potential drop control was simulated by COMSOL software, and the influence of the applied potential on the gap spacing and the
crevice corrosion process were simulated. Nickel electrode damage evolution, interface potential and local corrosion current density distribution were compared with published experimental
results. The results of this model showed consistency with the published experimental values, which can provide references for pitting corrosion of metal and deformation caused by crevice
corrosion joint deposits，and have certain guiding significance for metal corrosion protection. |
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