适用于钢筋混凝土腐蚀监测的长效MnO2参比电极的研制

CORC > 厦门大学 > 2017年第23卷

	适用于钢筋混凝土腐蚀监测的长效MnO2参比电极的研制; Preparations of MnO2 Reference Electrodes for Corrosion Monitoring of Reinforced Concrete
	杨莉 ; 徐兵 ; 王海 ; 董泽华 ; YANG Li ; XU Bing ; WANG Hai ; DONG Ze-hua
刊名	http://electrochem.xmu.edu.cn/CN/abstract/abstract10289.shtml
	2017-02-28
关键词	MnO2 参比电极混凝土电极电位 MnO2 Reference electrode Concrete Electrode potential
英文摘要	以电解法制备的MnO2粉体为原料，研制了可用于混凝土环境中的固体MnO2长效参比电极. 在饱和Ca(OH)2溶液中近一年的监测数据显示，该参比电极具有较好的电位稳定性和抗干扰能力，其电极电位的漂移< 10 mV. EIS和极化曲线测试结果表明，相对于化学法合成的MnO2电极，电解法制备的MnO2参比电极具有较小的内阻、较大的交换电流密度、较强的抗极化能力和较低的温度系数（~ 0.68 mV·°C-1）. 在硬化砂浆中的长期测试表明，该电极在混凝土中的电极电位基本不受Cl-、有机胺阻锈剂的影响，能作为埋入式参比电极，满足混凝土中Cl-浓度、pH值和钢筋半电池电位的长期监测的要求，这对于海洋混凝土工程的耐久性监测具有较高的应用价值.; In this work, the solid reference electrode was assemblied by using the electrochemically synthesized manganese dioxide (MnO2) (EMD) powder, gel electrolyte and thin mortar layer for the durability evaluation of concrete. The EMD reference electrode exhibited higher potential stability (< 10 mV drift) than the chemically synthesied MnO2 (CMD) based on half year potential tests in the saturated Ca(OH)2 solution and hardened mortar. In addition, the EMD electrode was almost insensitive to the presences of chloride ion and corrosion inhibitor. Electrochemical impedance and polarization curves indicate that the EMD electrode had lower charge transfer resistance，higher exchange current density and lower temperature coefficient than the CMD electrode. The EMD electrode could be a potential candidate as the long-term reference electrode for the durability management of concrete infrastructure.; 国家自然科学基金项目（No. 51371087）资助; 作者联系地址：1.华中科技大学化学与化工学院材料服役失效湖北省重点实验室，武汉，430074； 2.上海勘察设计研究院有限公司，上海，200434； 3.湖北文理学院化工与食品学院，湖北襄阳 433500; Author's Address: 1 School of Chemistry and Chemical Engineering, Hubei Key Laboratory of Material Chemistry and Service Failure, Huazhong University of Science and Technology, Wuhan, 430074, China; 2. Shanghai Investigation, Design & Research Institute Co., Ltd, Shanghai, 200434, China；3 School of Chemical and Food Sciences, Hubei Institute of Arts, Xiangyang 433500, Hubei, China; 通讯作者E-mail：zehua.dong@gmail.com
语种	中文
出版者	厦门大学《电化学》编辑部
内容类型	期刊论文
源URL	[http://dx.doi.org/10.13208/j.electrochem.160328]
专题	2017年第23卷
推荐引用方式 GB/T 7714	杨莉,徐兵,王海,等. 适用于钢筋混凝土腐蚀监测的长效MnO2参比电极的研制, Preparations of MnO2 Reference Electrodes for Corrosion Monitoring of Reinforced Concrete[J]. http://electrochem.xmu.edu.cn/CN/abstract/abstract10289.shtml,2017.
APA	杨莉.,徐兵.,王海.,董泽华.,YANG Li.,...&DONG Ze-hua.(2017).适用于钢筋混凝土腐蚀监测的长效MnO2参比电极的研制.http://electrochem.xmu.edu.cn/CN/abstract/abstract10289.shtml.
MLA	杨莉,et al."适用于钢筋混凝土腐蚀监测的长效MnO2参比电极的研制".http://electrochem.xmu.edu.cn/CN/abstract/abstract10289.shtml (2017).