| 重碳酸盐溶液中SO_4~(2-)和Cl~-对低碳钢活化/钝化腐蚀行为的影响 |
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| 引用本文： | 阳靖峰,董俊华,柯伟.重碳酸盐溶液中SO_4~(2-)和Cl~-对低碳钢活化/钝化腐蚀行为的影响[J].金属学报,2011(10). |
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| 作者姓名： | 阳靖峰 董俊华 柯伟 |
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| 作者单位： | 中国科学院金属研究所金属腐蚀与防护国家重点实验室; |
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| 基金项目： | 国家自然科学基金资助项目51071160~~ |
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| 摘 要： | 在除O_2的0.1 mol/L NaHCO_3,0.1 mol/L NaHCO_3+0.1 mol/L Na_2SO_4以及0.1 mol/L NaHCO_3+0.1 mol/L NaCl溶液中,用恒电位法在低碳钢电极表面制备腐蚀产物,并原位监测低碳钢的开路电位,用SEM观察腐蚀形貌,用XRD确定腐蚀产物的相组成.结果表明.在0.1 mol/L NaHCO_3溶液中,低碳钢的开路电位最终处于再钝化区间,其表面未观察到明显的腐蚀现象;在0.1 mol/L NaHCO_3+0.1 mol/L Na_2SO4溶液中,低碳钢的开路电位最终处于再活化区间,其表面发生均匀腐蚀;在0.1 mol/L NaHCO_3+0.1 mol/L NaCl溶液中,低碳钢的开路电位最终亦处于再活化区间,而其表面却发生局部腐蚀,XRD结果表明,低碳钢表面的腐蚀产物主要为Fe_3O_4和α-FeOOH.
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| 关 键 词： | 低碳钢 活化/钝化 重碳酸盐溶液 SO_4~- Cl~- |
EFFECTS OF SO_4~2- AND CI~- ON ACTIVE/PASSIVE CORROSION BEHAVIORS OF LOW CARBON STEEL IN DEAERATED BICARBONATE SOLUTION |
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| YANG Jingfeng,DONG Junhua,KE Wei State Key Laboratory for Corrosion , Protection.EFFECTS OF SO_4~2- AND CI~- ON ACTIVE/PASSIVE CORROSION BEHAVIORS OF LOW CARBON STEEL IN DEAERATED BICARBONATE SOLUTION[J].Acta Metallurgica Sinica,2011(10). |
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| Authors: | YANG Jingfeng DONG Junhua KE Wei State Key Laboratory for Corrosion Protection |
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| Affiliation: | YANG Jingfeng,DONG Junhua,KE Wei State Key Laboratory for Corrosion and Protection,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016 |
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| Abstract: | The corrosion behaviors of low carbon steel,a kind of materials used in making metal container sealing high-level radioactive waste,in three deaerated bicarbonate solutions simulated the ground water,0.1 mol/L NaHCO_3 solution.0.1 mol/L NaHCO_3+0.1 mol/L Na_2SO_4 solution and 0.1 mol/L NaHCO_3+0.1 mol/L NaCl solution,were examined.The results in potential evolution revealed that the low carbon steel moved up to the passive state in 0.1 mol/L NaHCO_3 solution while moved up to the re-active state in the othe... |
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| Keywords: | low carbon steel active/passive bicarbonate solution SO_4~(2-) Cl~- |
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