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李健等:pH值对Q235钢在模拟酸性土壤中腐蚀行为的影响 ·479· 在三组模拟土壤中最低,自腐蚀电流密度最高,因而其 Total Environ,2007,388(13):250 腐蚀发生的热力学倾向最高,且腐蚀速率最大.随模 [10]Su H,Yan A J,Chen X P,et al.An Accelerated Simulation Test 拟土壤pH值的升高,Q235钢的自腐蚀电位正移,自腐 Method for Soil Corrosion:China Patent,201310259811.9. 20130918 蚀电流密度减小,其发生腐蚀的倾向及腐蚀速率均减 (苏航,闫爱军,陈小平,等.一种模拟土壤腐蚀过程的加速 小.拟合结果与实验室腐蚀数据一致 腐蚀测试方法:中国专利,201310259811.9.2013-0918) 3结论 [11]Jiang Y Z,Jia S Y.Development and application of diatomite at home and abroad.Non-Ferrous Min Metall,2011,27(5):31 (1)在实验室模拟酸性土壤环境中,Q235钢的腐 (姜玉芝,贾嵩阳.硅藻土的国内外开发应用现状及进展 蚀速率随模拟土壤pH值升高而降低.在pH值为4.0 有色矿治,2011,27(5):31) 模拟土壤中试样腐蚀速率最大,至周期360h时达到 [12]Liu Z Y,Zhai G L,Du C W,et al.SCC of X70 pipeline steel in Yingtan acid soil environment.J Sichuan Univ Eng Sci Ed, 0.68mm·a,约为其他两种模拟土壤中腐蚀速率的 2008,40(2):76 1.4~1.6倍. (刘智勇,翟国丽,杜翠微,等.X0钢在蕊潭酸性土壤中的应 (2)随模拟土壤pH值升高,Q235钢锈层中孔隙 力腐蚀行为.四川大学学报:工程科学版,2008,40(2):76) 减少,更为致密,锈层保护性增强:腐蚀产物中α- [13]Institute of Soil Science,Chinese Academy of Sciences.Analysis Fe00H/y-FeOOH质量比升高,对基体的保护作用增 of Soil Physico-chemical Properties.Shanghai:Shanghai Science 强:蚀坑由窄深型发展变为宽浅型发展,降低了大深度 and Technology Press,1978 (中国科学院南京土壤研究所.土壤理化分析.上海:上海 蚀坑的危害性. 科学技术出版社,1978) (3)电化学极化曲线测试结果表明,随模拟土壤 [14]Wu Y H,Liu T M,Sun C,et al.Effects of simulated acid rain pH值升高,Q235钢的自腐蚀电位升高,自腐蚀电流密 on corrosion behaviors of Q235 steel in acidic soil.Corros Eng 度降低,试样的腐蚀速率减小. Sci7 Technol,2010,45(2):136 [15]Zhang L H,Zhang X F.Zhang W Y.Soil corrosion of grounding 参考文献 grid of substation in Chuanying District of Jilin City.Corros Sci [Romanoff M.Underground Corrosion.Washington DC:Govern- Prot Technol,2013,25(2):127 ment Publishing Office,1957 (张兰河,张雪峰,张万友.吉林市船营区土壤中变电站接 2]Jia S Y,Zhang B,Sun C,et al.Corrosion regulation of Q235 地网的腐蚀性研究.腐蚀科学与防护技术,2013,25(2): steel in contaminated soils with different pH values.Corros Prot, 127) 2009,30(5):300 6 Niu L,Cheng Y F.Corrosion behavior of X-70 pipe steel in (贾思洋,张波,孙成,等.Q235钢在不同pH值污染土壤中 near-neutral pH solution.Appl Surf Sci,2007,253(21):8626 的腐蚀规律.腐蚀与防护,2009,30(5):300) 7] Nie X H,Li Y L,Li J K,et al.Morphology,products and cor- B]Dong C F,Li X G.Wu J W,et al.Review in experimentation rosion mechanism analysis of Q235 carbon steel in sea-shore salty and data processing of soil corrosion.Corros Sci Prot Technol, soil.J Mater Eng,2010(8):24 2003,15(3):154 (聂向晖,李云龙,李记科,等.Q235碳钢在滨海盐土中的 (董超芳,李晓刚,武俊伟,等.土壤腐蚀的实验研究与数据 腐蚀形貌、产物及机理分析.材料工程,2010(8):24) 处理.腐蚀科学与防护技术,2003,15(3):154) [18]Zhu R Z.Metal Corrosion Science.Beijing:Metallurgical Indus- 4]Maslehuddin M,Al-Zahrani MM,Ibrahim M,et al.Effect of try Press,1989 chloride concentration in soil on reinforcement corrosion.Constr (朱日彰.金属腐蚀学.北京:治金工业出版社,1989) Build Mater,2007,21(8):1825 09] Yang T J,Li G M,Chen S,et al.Self-catalytic action in pitting [5]Levlin E.Aeration cell corrosion of carbon steel in soil in situ moni- propagation process of low alloy steels.Corros Prot,2010,31 toring cell current and potential.Corros Sci,1996,38(12):2083 (7):540 [6]Yan A J,Chen Y,Feng L J.Soil corrosion performance of several (杨铁军,李国明,陈珊,等.低合金钢点蚀扩展过程中的自 grounding net materials.Corros Sci Prot Technol,2010,22():197 催化作用.腐蚀与防护,2010,31(7):540) (闫爱军,陈沂,冯拉俊.几种接地网材料在土壤中的腐蚀特 [20]Evans U R,Taylor C A.Mechanism of atmospheric rusting.Cor- 性研究.腐蚀科学与防护技术,2010,22(3):197) ros Sci,1972,12(3):227 Wu Y H,Liu T M.Luo S X,et al.Corrosion characteristics of 1]Hara S,Kamimura T,Miyuki H,et al.Taxonomy for protective Q235 steel in simulated Yingtan soil solutions.Materialwiss Werk- ability of rust layer using its composition formed on weathering stofftech,2010,41(3):142 steel bridge.Corros Sci,2007,49(3):1131 8]Cole IS,Mamey D.The science of pipe corrosion:a review of 22]Xu C M,Huo C Y,Xiong Q R,et al.Corrosion behavior of X80 the literature on the corrosion of ferrous metals in soils.Corros Sci, pipeline steel in simulated acid soil solution.Mater Mech Eng, 2012,56(3):5 2009,33(5):29 [9]Ferreira C A M,Ponciano J A C,Vaitsman D S,et al.Evaluation (胥聪敏,霍春勇,熊庆人,等.X80管线钢在酸性土壤模拟 of the corrosivity of the soil through its chemical composition.Sci 溶液中的腐蚀行为.机械工程材料,2009,33(5):29)李 健等: pH 值对 Q235 钢在模拟酸性土壤中腐蚀行为的影响 在三组模拟土壤中最低,自腐蚀电流密度最高,因而其 腐蚀发生的热力学倾向最高,且腐蚀速率最大. 随模 拟土壤 pH 值的升高,Q235 钢的自腐蚀电位正移,自腐 蚀电流密度减小,其发生腐蚀的倾向及腐蚀速率均减 小. 拟合结果与实验室腐蚀数据一致. 3 结论 ( 1) 在实验室模拟酸性土壤环境中,Q235 钢的腐 蚀速率随模拟土壤 pH 值升高而降低. 在 pH 值为 4. 0 模拟土壤中试样腐蚀速率最大,至周期 360 h 时达到 0. 68 mm·a - 1,约为其他两种模拟土壤中腐蚀速率的 1. 4 ~ 1. 6 倍. ( 2) 随模拟土壤 pH 值升高,Q235 钢锈层中孔隙 减少,更 为 致 密,锈 层 保 护 性 增 强; 腐 蚀 产 物 中 α- FeOOH /γ-FeOOH 质量比升高,对基体的保护作用增 强; 蚀坑由窄深型发展变为宽浅型发展,降低了大深度 蚀坑的危害性. ( 3) 电化学极化曲线测试结果表明,随模拟土壤 pH 值升高,Q235 钢的自腐蚀电位升高,自腐蚀电流密 度降低,试样的腐蚀速率减小. 参 考 文 献 [1] Romanoff M. Underground Corrosion. Washington DC: Govern￾ment Publishing Office,1957 [2] Jia S Y,Zhang B,Sun C,et al. Corrosion regulation of Q235 steel in contaminated soils with different pH values. Corros Prot, 2009,30( 5) : 300 ( 贾思洋,张波,孙成,等. Q235 钢在不同 pH 值污染土壤中 的腐蚀规律. 腐蚀与防护,2009,30( 5) : 300) [3] Dong C F,Li X G,Wu J W,et al. Review in experimentation and data processing of soil corrosion. Corros Sci Prot Technol, 2003,15( 3) : 154 ( 董超芳,李晓刚,武俊伟,等. 土壤腐蚀的实验研究与数据 处理. 腐蚀科学与防护技术,2003,15( 3) : 154) [4] Maslehuddin M,Al-Zahrani M M,Ibrahim M,et al. Effect of chloride concentration in soil on reinforcement corrosion. Constr Build Mater,2007,21( 8) : 1825 [5] Levlin E. Aeration cell corrosion of carbon steel in soil: in situ moni￾toring cell current and potential. Corros Sci,1996,38( 12) : 2083 [6] Yan A J,Chen Y,Feng L J. Soil corrosion performance of several grounding net materials. Corros Sci Prot Technol,2010,22( 3) : 197 ( 闫爱军,陈沂,冯拉俊. 几种接地网材料在土壤中的腐蚀特 性研究. 腐蚀科学与防护技术,2010,22( 3) : 197) [7] Wu Y H,Liu T M,Luo S X,et al. Corrosion characteristics of Q235 steel in simulated Yingtan soil solutions. Materialwiss Werk￾stofftech,2010,41( 3) : 142 [8] Cole I S,Marney D. The science of pipe corrosion: a review of the literature on the corrosion of ferrous metals in soils. Corros Sci, 2012,56( 3) : 5 [9] Ferreira C A M,Ponciano J A C,Vaitsman D S,et al. Evaluation of the corrosivity of the soil through its chemical composition. Sci Total Environ,2007,388( 1-3) : 250 [10] Su H,Yan A J,Chen X P,et al. An Accelerated Simulation Test Method for Soil Corrosion: China Patent,201310259811. 9. 2013-09-18 ( 苏航,闫爱军,陈小平,等. 一种模拟土壤腐蚀过程的加速 腐蚀测试方法: 中国专利,201310259811. 9. 2013-09-18) [11] Jiang Y Z,Jia S Y. Development and application of diatomite at home and abroad. Non-Ferrous Min Metall,2011,27( 5) : 31 ( 姜玉芝,贾嵩阳. 硅藻土的国内外开发应用现状及进展. 有色矿冶,2011,27( 5) : 31) [12] Liu Z Y,Zhai G L,Du C W,et al. SCC of X70 pipeline steel in Yingtan acid soil environment. J Sichuan Univ Eng Sci Ed, 2008,40( 2) : 76 ( 刘智勇,翟国丽,杜翠微,等. X70 钢在鹰潭酸性土壤中的应 力腐蚀行为. 四川大学学报: 工程科学版,2008,40( 2) : 76) [13] Institute of Soil Science,Chinese Academy of Sciences. Analysis of Soil Physico-chemical Properties. Shanghai: Shanghai Science and Technology Press,1978 ( 中国科学院南京土壤研究所. 土壤理化分析. 上海: 上海 科学技术出版社,1978) [14] Wu Y H,Liu T M,Sun C,et al. Effects of simulated acid rain on corrosion behaviors of Q235 steel in acidic soil. Corros Eng Sci Technol,2010,45( 2) : 136 [15] Zhang L H,Zhang X F,Zhang W Y. Soil corrosion of grounding grid of substation in Chuanying District of Jilin City. Corros Sci Prot Technol,2013,25( 2) : 127 ( 张兰河,张雪峰,张万友. 吉林市船营区土壤中变电站接 地网的腐蚀性研究. 腐蚀科学与防护技术,2013,25 ( 2) : 127) [16] Niu L,Cheng Y F. Corrosion behavior of X--70 pipe steel in near-neutral pH solution. Appl Surf Sci,2007,253( 21) : 8626 [17] Nie X H,Li Y L,Li J K,et al. Morphology,products and cor￾rosion mechanism analysis of Q235 carbon steel in sea-shore salty soil. J Mater Eng,2010( 8) : 24 ( 聂向晖,李云龙,李记科,等. Q235 碳钢在滨海盐土中的 腐蚀形貌、产物及机理分析. 材料工程,2010( 8) : 24) [18] Zhu R Z. Metal Corrosion Science. Beijing: Metallurgical Indus￾try Press,1989 ( 朱日彰. 金属腐蚀学. 北京: 冶金工业出版社,1989) [19] Yang T J,Li G M,Chen S,et al. Self-catalytic action in pitting propagation process of low alloy steels. Corros Prot,2010,31 ( 7) : 540 ( 杨铁军,李国明,陈珊,等. 低合金钢点蚀扩展过程中的自 催化作用. 腐蚀与防护,2010,31( 7) : 540) [20] Evans U R,Taylor C A. Mechanism of atmospheric rusting. Cor￾ros Sci,1972,12( 3) : 227 [21] Hara S,Kamimura T,Miyuki H,et al. Taxonomy for protective ability of rust layer using its composition formed on weathering steel bridge. Corros Sci,2007,49( 3) : 1131 [22] Xu C M,Huo C Y,Xiong Q R,et al. Corrosion behavior of X80 pipeline steel in simulated acid soil solution. Mater Mech Eng, 2009,33( 5) : 29 ( 胥聪敏,霍春勇,熊庆人,等. X80 管线钢在酸性土壤模拟 溶液中的腐蚀行为. 机械工程材料,2009,33( 5) : 29) · 974 ·
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