| 二乙基二硫代氨基甲酸钠和硫脲对AZ91D镁合金在3.5%NaCl溶液中的缓蚀作用 |
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| 引用本文： | 赵蕊,唐聿明,熊金平,左禹.二乙基二硫代氨基甲酸钠和硫脲对AZ91D镁合金在3.5%NaCl溶液中的缓蚀作用[J].腐蚀科学与防护技术,2011(3). |
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| 作者姓名： | 赵蕊 唐聿明 熊金平 左禹 |
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| 作者单位： | 北京化工大学材料科学与工程学院; |
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| 基金项目： | 教育部重点科技项目(108129)资助 |
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| 摘 要： | 采用失重法、电化学阻抗法和极化曲线研究了二乙基二硫代氨基甲酸钠(SDEDTC)和硫脲(TU)对AZ91D镁合金在NaCl溶液中的缓蚀作用.结果表明,在3.5%NaCl溶液中,二乙基二硫代氨基甲酸钠的缓蚀效率存在浓度极值现象,在质量分数为0.1%时缓蚀性能最佳;硫脲对镁合金的缓蚀也存在浓度极值现象,缓蚀效率随着浓度增加先升高后降低,当质量分数为0.3%时,缓蚀性能最佳.二者的缓蚀机制都是抑制阴极反应,有较好的缓蚀协同效应,当复配比例为0.3%硫脲+0.1%二乙基二硫代氨基甲酸钠时,缓蚀效果最好,达到88%.
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| 关 键 词： | AZ91D镁合金 缓蚀剂 二乙基二硫代氨基甲酸钠 硫脲 协同效应 |
Inhibition Effect of Sodium Diethyl Dithiocarbarnate and Thiourea on AZ91D Magnesium Alloy in 3.5%NaCl Solution |
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| ZHAO Rui,TANG Yu-ming,XIONG Jin-ping,ZUO Yu School of Materials Science , Engineering,Beijing University of Chemical Technology,Beijing.Inhibition Effect of Sodium Diethyl Dithiocarbarnate and Thiourea on AZ91D Magnesium Alloy in 3.5%NaCl Solution[J].Corrosion Science and Protection Technology,2011(3). |
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| Authors: | ZHAO Rui TANG Yu-ming XIONG Jin-ping ZUO Yu School of Materials Science Engineering Beijing University of Chemical Technology Beijing |
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| Affiliation: | ZHAO Rui,TANG Yu-ming,XIONG Jin-ping,ZUO Yu School of Materials Science and Engineering,Beijing University of Chemical Technology,Beijing 100029 |
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| Abstract: | Mass-loss test,electrochemical impedance spectroscopy(EIS)and polarization measurement were used to study the inhibition effect of sodium diethyl dithiocarbarnate(SDEDTC) and thiourea(TU)on the corrosion of AZ91D magnesium alloy in 3.5%NaCl solution.Both SDEDTC and TU showed inhibition effect on magnesium alloy by suppressing the cathodic reactions, while a concentration extreme phenomenon was observed.The optimal inhibition concentrations were 0.1 mass%and 0.3 mass%for SDEDTC and TU,respectively.A combinat... |
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| Keywords: | AZ91D megnesium alloy inhibitor sodium diethyl dithiocarbamate(SDEDTC) thiourea(TU) synergistic effect |
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